scala.collection.immutable.Map
The implementation class of the set returned by keySet.
The implementation class of the iterable returned by values.
The type implementing this traversable
A class supporting filtered operations .
o != arg0 is the same as !(o == (arg0)).
o != arg0 is the same as !(o == (arg0)).
the object to compare against this object for dis-equality .
false if the receiver object is equivalent to the argument; true otherwise.
Add a key/value pair to this map, returning a new map .
Adds two or more elements to this collection and returns a new collection .
Adds two or more elements to this collection and returns a new collection .
the type of the added values
the first element to add .
the second element to add .
the remaining elements to add .
A new map with the new bindings added to this map .
Adds a number of elements provided by a traversable object and returns a new collection with the added elements .
Adds a number of elements provided by a traversable object and returns a new collection with the added elements .
the type of the added values
the traversable object consisting of key-value pairs .
a new immutable map with the bindings of this map and those from xs.
[use case] Concatenates this immutable map with the elements of a traversable collection .
Concatenates this immutable map with the elements of a traversable collection .
the traversable to append .
a new immutable map which contains all elements of this immutable map
followed by all elements of that.
Concatenates this immutable map with the elements of a traversable collection .
Concatenates this immutable map with the elements of a traversable collection .
the element type of the returned collection .
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type B being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.
the traversable to append .
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
a new collection of type That which contains all elements of this immutable map
followed by all elements of that.
[use case] Removes a key from this map, returning a new map .
Removes a key from this map, returning a new map .
the key to be removed
a new map without a binding for key
Removes a key from this map, returning a new map .
Removes a key from this map, returning a new map .
the key to be removed
a new map without a binding for key
Creates a new immutable map from this immutable map with some elements removed .
Creates a new immutable map from this immutable map with some elements removed .
This method takes two or more elements to be removed. Another overloaded variant of this method handles the case where a single element is removed.
the first element to remove .
the second element to remove .
the remaining elements to remove .
a new immutable map that contains all elements of the current immutable map except one less occurrence of each of the given elements .
Creates a new immutable map from this immutable map by removing all elements of another collection .
Creates a new immutable map from this immutable map by removing all elements of another collection .
a new immutable map that contains all elements of the current immutable map
except one less occurrence of each of the elements of elems.
Applies a binary operator to a start value and all elements of this immutable map, going left to right .
Applies a binary operator to a start value and all elements of this immutable map, going left to right .
Note: /: is alternate syntax for foldLeft; z /: xs is the same as xs foldLeft z.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the start value .
the binary operator .
the result of inserting op between consecutive elements of this immutable map,
going left to right with the start value z on the left:
op(...op(op(z, x1), x2), ..., xn)
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
Applies a binary operator to all elements of this immutable map and a start value, going right to left .
Applies a binary operator to all elements of this immutable map and a start value, going right to left .
Note: :\ is alternate syntax for foldRight; xs :\ z is the same as xs foldRight z.
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the start value
the binary operator
the result of inserting op between consecutive elements of this immutable map,
going right to left with the start value z on the right:
op(x1, op(x2, ... op(xn, z)...))
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).
o == arg0 is the same as if (o eq null) arg0 eq null else o.equals(arg0).
the object to compare against this object for equality .
true if the receiver object is equivalent to the argument; false otherwise.
o == arg0 is the same as o.equals(arg0).
o == arg0 is the same as o.equals(arg0).
the object to compare against this object for equality .
true if the receiver object is equivalent to the argument; false otherwise.
Appends all bindings of this map to a string builder using start, end, and separator strings .
Appends all bindings of this map to a string builder using start, end, and separator strings.
The written text begins with the string start and ends with the string
end. Inside, the string representations of all bindings of this map
in the form of key -> value are separated by the string sep.
the builder to which strings are appended .
the starting string .
the separator string .
the ending string .
the string builder b to which elements were appended.
Appends all elements of this immutable map to a string builder .
Appends all elements of this immutable map to a string builder.
The written text consists of the string representations (w.r.t. the method toString)
of all elements of this immutable map without any separator string.
the string builder to which elements are appended .
the string builder b to which elements were appended.
Appends all elements of this immutable map to a string builder using a separator string .
Appends all elements of this immutable map to a string builder using a separator string.
The written text consists of the string representations (w.r.t. the method toString)
of all elements of this immutable map, separated by the string sep.
the string builder to which elements are appended .
the separator string .
the string builder b to which elements were appended.
Composes this partial function with a transformation function that gets applied to results of this partial function .
Composes this partial function with a transformation function that gets applied to results of this partial function .
the result type of the transformation function .
the transformation function
a partial function with the same domain as this partial function, which maps
arguments x to k(this(x)).
Retrieves the value which is associated with the given key .
Retrieves the value which is associated with the given key. This
method invokes the default method of the map if there is no mapping
from the given key to a value. Unless overridden, the default method throws a
NoSuchElementException.
the key
the value associated with the given key, or the result of the
map's default method, if none exists.
This method is used to cast the receiver object to be of type T0.
This method is used to cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expressionList(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as
part of compilation it is not possible to check whether the contents of the list are of the requested typed.
the receiver object .
Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind .
Method called from equality methods, so that user-defined subclasses can refuse to be equal to other collections of the same kind .
The object with which this immutable map should be compared
true, if this immutable map can possibly equal that, false otherwise. The test
takes into consideration only the run-time types of objects but ignores their elements.
This method creates and returns a copy of the receiver object .
This method creates and returns a copy of the receiver object .
The default implementation of the clone method is platform dependent.
a copy of the receiver object .
[use case] Builds a new collection by applying a partial function to all elements of this immutable map on which the function is defined .
Builds a new collection by applying a partial function to all elements of this immutable map on which the function is defined .
the element type of the returned collection .
the partial function which filters and maps the immutable map .
a new immutable map resulting from applying the given partial function
pf to each element on which it is defined and collecting the results.
The order of the elements is preserved.
Builds a new collection by applying a partial function to all elements of this immutable map on which the function is defined .
Builds a new collection by applying a partial function to all elements of this immutable map on which the function is defined .
the element type of the returned collection .
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type B being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.
the partial function which filters and maps the immutable map .
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
a new collection of type That resulting from applying the partial function
pf to each element on which it is defined and collecting the results.
The order of the elements is preserved.
The factory companion object that builds instances of class immutable .
The factory companion object that builds instances of class immutable . Map.
(f compose g)(x) == f(g(x))
(f compose g)(x) == f(g(x))
Tests whether this map contains a binding for a key .
Tests whether this map contains a binding for a key .
the key
true if there is a binding for key in this map, false otherwise.
[use case] Copies elements of this immutable map to an array .
Copies elements of this immutable map to an array.
Fills the given array xs with at most len elements of
this immutable map, starting at position start.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached, or len elements have been copied.
the array to fill .
the starting index .
the maximal number of elements to copy .
Copies elements of this immutable map to an array .
Copies elements of this immutable map to an array.
Fills the given array xs with at most len elements of
this immutable map, starting at position start.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached, or len elements have been copied.
the type of the elements of the array .
the array to fill .
the starting index .
the maximal number of elements to copy .
[use case] Copies values of this immutable map to an array .
Copies values of this immutable map to an array.
Fills the given array xs with values of this immutable map.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached.
the array to fill .
Copies values of this immutable map to an array .
Copies values of this immutable map to an array.
Fills the given array xs with values of this immutable map.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached.
the type of the elements of the array .
the array to fill .
[use case] Copies values of this immutable map to an array .
Copies values of this immutable map to an array.
Fills the given array xs with values of this immutable map, after skipping start values.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached.
the array to fill .
the starting index .
Copies values of this immutable map to an array .
Copies values of this immutable map to an array.
Fills the given array xs with values of this immutable map, after skipping start values.
Copying will stop once either the end of the current immutable map is reached,
or the end of the array is reached.
the type of the elements of the array .
the array to fill .
the starting index .
Copies all elements of this immutable map to a buffer .
Copies all elements of this immutable map to a buffer .
The buffer to which elements are copied .
Counts the number of elements in the immutable map which satisfy a predicate .
Counts the number of elements in the immutable map which satisfy a predicate .
the predicate used to test elements .
the number of elements satisfying the predicate p.
Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses .
Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses .
the given key value for which a binding is missing .
Selects all elements except first n ones.
Selects all elements except first n ones.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the number of elements to drop from this immutable map .
a immutable map consisting of all elements of this immutable map except the first n ones, or else the
empty immutable map, if this immutable map has less than n elements.
Selects all elements except last n ones.
Selects all elements except last n ones.
Note: might return different results for different runs, unless the underlying collection type is ordered.
The number of elements to take
a immutable map consisting of all elements of this immutable map except the first n ones, or else the
empty immutable map, if this immutable map has less than n elements.
Drops longest prefix of elements that satisfy a predicate .
Drops longest prefix of elements that satisfy a predicate .
Note: might return different results for different runs, unless the underlying collection type is ordered.
The predicate used to test elements .
the longest suffix of this immutable map whose first element
does not satisfy the predicate p.
use iterator' instead
The empty map of the same type as this map
This method is used to test whether the argument (arg0) is a reference to the
receiver object (this).
This method is used to test whether the argument (arg0) is a reference to the
receiver object (this).
The eq method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on
non-null instances of AnyRef:
* It is reflexive: for any non-null instance x of type AnyRef, x.eq(x) returns true.
* It is symmetric: for any non-null instances x and y of type AnyRef, x.eq(y) returns true if and
only if y.eq(x) returns true.
* It is transitive: for any non-null instances x, y, and z of type AnyRef if x.eq(y) returns true and y.eq(z) returns true, then x.eq(z) returns true.
Additionally, the eq method has three other properties.
* It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of
x.eq(y) consistently returns true or consistently returns false.
* For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
* null.eq(null) returns true.
When overriding the equals or hashCode methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they
should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
the object to compare against this object for reference equality .
true if the argument is a reference to the receiver object; false otherwise.
Compares two maps structurally; i .
Tests whether a predicate holds for some of the elements of this immutable map .
Tests whether a predicate holds for some of the elements of this immutable map .
the predicate used to test elements .
true if the given predicate p holds for some of the elements
of this immutable map, otherwise false.
Selects all elements of this immutable map which satisfy a predicate .
Selects all elements of this immutable map which satisfy a predicate .
the predicate used to test elements .
a new immutable map consisting of all elements of this immutable map that satisfy the given
predicate p. The order of the elements is preserved.
Filters this map by retaining only keys satisfying a predicate .
Filters this map by retaining only keys satisfying a predicate .
the predicate used to test keys
an immutable map consisting only of those key value pairs of this map where the key satisfies
the predicate p. The resulting map wraps the original map without copying any elements.
Returns a new map with all key/value pairs for which the predicate
p returns true.
Returns a new map with all key/value pairs for which the predicate
p returns true.
Note: This method works by successively removing elements fro which the
predicate is false from this set.
If removal is slow, or you expect that most elements of the set
will be removed, you might consider using filter with a negated predicate instead.
A predicate over key-value pairs
A new map containing elements not satisfying the predicate .
This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object .
This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object .
The details of when and if the finalize method are invoked, as well as the interaction between finalizeand non-local returns and exceptions, are all platform dependent.
Finds the first element of the immutable map satisfying a predicate, if any .
Finds the first element of the immutable map satisfying a predicate, if any .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the predicate used to test elements .
an option value containing the first element in the immutable map
that satisfies p, or None if none exists.
use head' instead
None if iterable is empty.
[use case] Builds a new collection by applying a function to all elements of this immutable map and concatenating the results .
Builds a new collection by applying a function to all elements of this immutable map and concatenating the results .
the element type of the returned collection .
the function to apply to each element .
a new immutable map resulting from applying the given collection-valued function
f to each element of this immutable map and concatenating the results.
Builds a new collection by applying a function to all elements of this immutable map and concatenating the results .
Builds a new collection by applying a function to all elements of this immutable map and concatenating the results .
the element type of the returned collection .
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type B being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.
the function to apply to each element .
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
a new collection of type That resulting from applying the given collection-valued function
f to each element of this immutable map and concatenating the results.
[use case] Converts this immutable map of traversable collections into a immutable map in which all element collections are concatenated .
Converts this immutable map of traversable collections into a immutable map in which all element collections are concatenated .
the type of the elements of each traversable collection .
a new immutable map resulting from concatenating all element immutable maps .
Converts this immutable map of traversable collections into a immutable map in which all element collections are concatenated .
Converts this immutable map of traversable collections into a immutable map in which all element collections are concatenated .
the type of the elements of each traversable collection .
an implicit conversion which asserts that the element type of this
immutable map is a Traversable.
a new immutable map resulting from concatenating all element immutable maps .
Applies a binary operator to a start value and all elements of this immutable map, going left to right .
Applies a binary operator to a start value and all elements of this immutable map, going left to right .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the start value .
the binary operator .
the result of inserting op between consecutive elements of this immutable map,
going left to right with the start value z on the left:
op(...op(z, x1), x2, ..., xn)
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
Applies a binary operator to all elements of this immutable map and a start value, going right to left .
Applies a binary operator to all elements of this immutable map and a start value, going right to left .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the start value .
the binary operator .
the result of inserting op between consecutive elements of this immutable map,
going right to left with the start value z on the right:
op(x1, op(x2, ... op(xn, z)...))
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
Tests whether a predicate holds for all elements of this immutable map .
Tests whether a predicate holds for all elements of this immutable map .
the predicate used to test elements .
true if the given predicate p holds for all elements
of this immutable map, otherwise false.
[use case] Applies a function f to all elements of this immutable map.
Applies a function f to all elements of this immutable map.
the function that is applied for its side-effect to every element.
The result of function f is discarded.
Applies a function f to all elements of this immutable map.
Applies a function f to all elements of this immutable map.
Note: this method underlies the implementation of most other bulk operations. Subclasses should re-implement this method if a more efficient implementation exists.
the type parameter describing the result of function f.
This result will always be ignored. Typically U is Unit,
but this is not necessary.
the function that is applied for its side-effect to every element.
The result of function f is discarded.
The generic builder that builds instances of immutable .
The generic builder that builds instances of immutable . Map at arbitrary element types.
Optionally returns the value associated with a key .
Returns a representation that corresponds to the dynamic class of the receiver object .
Returns a representation that corresponds to the dynamic class of the receiver object .
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object .
[use case] Returns the value associated with a key, or a default value if the key is not contained in the map .
Returns the value associated with a key, or a default value if the key is not contained in the map .
the key .
a computation that yields a default value in case no binding for key is
found in the map.
the value associated with key if it exists,
otherwise the result of the default computation.
Returns the value associated with a key, or a default value if the key is not contained in the map .
Returns the value associated with a key, or a default value if the key is not contained in the map .
the result type of the default computation .
the key .
a computation that yields a default value in case no binding for key is
found in the map.
the value associated with key if it exists,
otherwise the result of the default computation.
Partitions this immutable map into a map of immutable maps according to some discriminator function .
Partitions this immutable map into a map of immutable maps according to some discriminator function .
Note: this method is not re-implemented by views. This means when applied to a view it will always force the view and return a new immutable map.
the type of keys returned by the discriminator function .
the discriminator function .
A map from keys to immutable maps such that the following invariant holds:
(xs partition f)(k) = xs filter (x => f(x) == k)
That is, every key k is bound to a immutable map of those elements x for which f(x) equals k.
Partitions elements in fixed size immutable maps .
Partitions elements in fixed size immutable maps .
the number of elements per group
An iterator producing immutable maps of size size, except the
last will be truncated if the elements don't divide evenly.
Iterator#grouped
Tests whether this immutable map is known to have a finite size .
Tests whether this immutable map is known to have a finite size.
All strict collections are known to have finite size. For a non-strict collection
such as Stream, the predicate returns true if all elements have been computed.
It returns false if the stream is not yet evaluated to the end.
Note: many collection methods will not work on collections of infinite sizes.
true if this collection is known to have finite size, false otherwise.
Returns a hash code value for the object .
Returns a hash code value for the object .
The default hashing algorithm is platform dependent.
Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet
not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0.
However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have
identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure
to verify that the behavior is consistent with the equals method.
the hash code value for the object .
Selects the first element of this immutable map .
Selects the first element of this immutable map .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the first element of this immutable map .
Optionally selects the first element .
Optionally selects the first element .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the first element of this immutable map if it is nonempty, None if it is empty.
Selects all elements except the last .
Selects all elements except the last .
Note: might return different results for different runs, unless the underlying collection type is ordered.
a immutable map consisting of all elements of this immutable map except the last one .
Tests whether this map contains a binding for a key .
Tests whether this map contains a binding for a key. This method,
which implements an abstract method of trait PartialFunction,
is equivalent to contains.
the key
true if there is a binding for key in this map, false otherwise.
Tests whether the map is empty .
Tests whether the map is empty .
true if the map does not contain any key/value binding, false otherwise.
This method is used to test whether the dynamic type of the receiver object is T0.
This method is used to test whether the dynamic type of the receiver object is T0.
Note that the test result of the test is modulo Scala's erasure semantics. Therefore the expression1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will
return true. In the latter example, because the type argument is erased as part of compilation it is not
possible to check whether the contents of the list are of the requested typed.
true if the receiver object is an instance of erasure of type T0; false otherwise.
Tests whether this immutable map can be repeatedly traversed .
Tests whether this immutable map can be repeatedly traversed .
true
Creates a new iterator over all key/value pairs of this map
Creates a new iterator over all key/value pairs of this map
the new iterator
Collects all keys of this map in a set .
Collects all keys of this map in a set .
a set containing all keys of this map .
Creates an iterator for all keys .
Creates an iterator for all keys .
Selects the last element .
Selects the last element .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the first element of this immutable map .
Optionally selects the last element .
Optionally selects the last element .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the last element of this immutable map$ if it is nonempty, None if it is empty.
Turns this partial function into an plain function returning an Option result.
Turns this partial function into an plain function returning an Option result.
a function that takes an argument x to Some(this(x)) if this is defined for x, and to None otherwise.
[use case] Builds a new collection by applying a function to all elements of this immutable map .
Builds a new collection by applying a function to all elements of this immutable map .
the element type of the returned collection .
the function to apply to each element .
a new immutable map resulting from applying the given function
f to each element of this immutable map and collecting the results.
Builds a new collection by applying a function to all elements of this immutable map .
Builds a new collection by applying a function to all elements of this immutable map .
the element type of the returned collection .
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type B being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, B, That] is found.
the function to apply to each element .
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
a new collection of type That resulting from applying the given function
f to each element of this immutable map and collecting the results.
use mapValues' instead
Transforms this map by applying a function to every retrieved value .
[use case] Finds the largest element .
Finds the largest element .
the largest element of this immutable map .
Finds the largest element .
Finds the largest element .
The type over which the ordering is defined .
An ordering to be used for comparing elements .
the largest element of this immutable map with respect to the ordering cmp.
[use case] Finds the smallest element .
Finds the smallest element .
the smallest element of this immutable map
Finds the smallest element .
Finds the smallest element .
The type over which the ordering is defined .
An ordering to be used for comparing elements .
the smallest element of this immutable map with respect to the ordering cmp.
Displays all elements of this immutable map in a string .
Displays all elements of this immutable map in a string .
a string representation of this immutable map. In the resulting string
the string representations (w.r.t. the method toString)
of all elements of this immutable map follow each other without any separator string.
Displays all elements of this immutable map in a string using a separator string .
Displays all elements of this immutable map in a string using a separator string .
the separator string .
a string representation of this immutable map. In the resulting string
the string representations (w.r.t. the method toString)
of all elements of this immutable map are separated by the string sep.
Displays all elements of this immutable map in a string using start, end, and separator strings .
Displays all elements of this immutable map in a string using start, end, and separator strings .
the starting string .
the separator string .
the ending string .
a string representation of this immutable map. The resulting string
begins with the string start and ends with the string
end. Inside, the string representations (w.r.t. the method toString)
of all elements of this immutable map are separated by the string sep.
o.ne(arg0) is the same as !(o.eq(arg0)).
o.ne(arg0) is the same as !(o.eq(arg0)).
the object to compare against this object for reference dis-equality .
false if the argument is not a reference to the receiver object; true otherwise.
A common implementation of newBuilder for all maps in terms of empty.
A common implementation of newBuilder for all maps in terms of empty.
Overridden for mutable maps in mutable.MapLike.
Tests whether the immutable map is not empty .
Tests whether the immutable map is not empty .
true if the immutable map contains at least one element, false otherwise.
Wakes up a single thread that is waiting on the receiver object's monitor .
Wakes up a single thread that is waiting on the receiver object's monitor .
Wakes up all threads that are waiting on the receiver object's monitor .
Wakes up all threads that are waiting on the receiver object's monitor .
Composes this partial function with a fallback partial function which gets applied where this partial function is not defined .
Composes this partial function with a fallback partial function which gets applied where this partial function is not defined .
the argument type of the fallback function
the result type of the fallback function
the fallback function
a partial function which has as domain the union of the domains
of this partial function and that. The resulting partial function
takes x to this(x) where this is defined, and to that(x) where it is not.
Partitions this immutable map in two immutable maps according to a predicate .
Partitions this immutable map in two immutable maps according to a predicate .
the predicate on which to partition .
a pair of immutable maps: the first immutable map consists of all elements that
satisfy the predicate p and the second immutable map consists of all elements
that don't. The relative order of the elements in the resulting immutable maps
is the same as in the original immutable map.
[use case] Multiplies up the elements of this collection .
Multiplies up the elements of this collection .
the product of all elements in this immutable map of numbers of type Int.
Instead of Int, any other type T with an implicit Numeric[T] implementation
can be used as element type of the immutable map and as result type of product.
Examples of such types are: Long, Float, Double, BigInt.
Multiplies up the elements of this collection .
Multiplies up the elements of this collection .
the result type of the * operator.
an implicit parameter defining a set of numeric operations
which includes the * operator to be used in forming the product.
the product of all elements of this immutable map with respect to the * operator in num.
returns a projection that can be used to call non-strict filter,map, and flatMap methods that build projections
of the collection.
returns a projection that can be used to call non-strict filter,map, and flatMap methods that build projections
of the collection.
use view' instead
Applies a binary operator to all elements of this immutable map, going left to right .
Applies a binary operator to all elements of this immutable map, going left to right .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the binary operator .
the result of inserting op between consecutive elements of this immutable map,
going left to right:
op(...(op(x1, x2), ... ) , xn)
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
Optionally applies a binary operator to all elements of this immutable map, going left to right .
Optionally applies a binary operator to all elements of this immutable map, going left to right .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the binary operator .
an option value containing the result of reduceLeft(op) is this immutable map is nonempty,
None otherwise.
Applies a binary operator to all elements of this immutable map, going right to left .
Applies a binary operator to all elements of this immutable map, going right to left .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the binary operator .
the result of inserting op between consecutive elements of this immutable map,
going right to left:
op(x1, op(x2, ..., op(xn-1, xn)...))
where x,,1,,, ..., x,,n,, are the elements of this immutable map.
Optionally applies a binary operator to all elements of this immutable map, going right to left .
Optionally applies a binary operator to all elements of this immutable map, going right to left .
Note: might return different results for different runs, unless the underlying collection type is ordered. or the operator is associative and commutative.
the result type of the binary operator .
the binary operator .
an option value containing the result of reduceRight(op) is this immutable map is nonempty,
None otherwise.
The collection of type immutable map underlying this TraversableLike object.
The collection of type immutable map underlying this TraversableLike object.
By default this is implemented as the TraversableLike object itself, but this can be overridden.
[use case] Checks if the other iterable collection contains the same elements in the same order as this immutable map .
Checks if the other iterable collection contains the same elements in the same order as this immutable map .
the collection to compare with .
true, if both collections contain the same elements in the same order, false otherwise.
Checks if the other iterable collection contains the same elements in the same order as this immutable map .
Checks if the other iterable collection contains the same elements in the same order as this immutable map .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the elements of collection that.
the collection to compare with .
true, if both collections contain the same elements in the same order, false otherwise.
Produces a collection containing cummulative results of applying the operator going left to right .
Produces a collection containing cummulative results of applying the operator going left to right .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the elements in the resulting collection
the actual type of the resulting collection
the initial value
the binary operator applied to the intermediate result and the element
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
collection with intermediate results
Produces a collection containing cummulative results of applying the operator going right to left .
Produces a collection containing cummulative results of applying the operator going right to left .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the elements in the resulting collection
the actual type of the resulting collection
the initial value
the binary operator applied to the intermediate result and the element
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and
and the new element type B.
collection with intermediate results
The size of this immutable map .
The size of this immutable map .
the number of elements in this immutable map .
Selects an interval of elements .
Selects an interval of elements .
Note: c.slice(from, to) is equivalent to (but possibly more efficient than)
c.drop(from).take(to - from)
Note: might return different results for different runs, unless the underlying collection type is ordered.
the index of the first returned element in this immutable map .
the index one past the last returned element in this immutable map .
a immutable map containing the elements starting at index from and extending up to (but not including) index until of this immutable map.
Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped .
Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped . )
the number of elements per group
An iterator producing immutable maps of size size, except the
last will be truncated if the elements don't divide evenly.
Iterator#sliding
Splits this immutable map into a prefix/suffix pair according to a predicate .
Splits this immutable map into a prefix/suffix pair according to a predicate .
Note: c span p is equivalent to (but possibly more efficient than)
(c takeWhile p, c dropWhile p), provided the evaluation of the predicate p does not cause any side-effects.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the test predicate
a pair consisting of the longest prefix of this immutable map whose
elements all satisfy p, and the rest of this immutable map.
Splits this immutable map into two at a given position .
Splits this immutable map into two at a given position.
Note: c splitAt n is equivalent to (but possibly more efficient than)
(c take n, c drop n).
Note: might return different results for different runs, unless the underlying collection type is ordered.
the position at which to split .
a pair of immutable maps consisting of the first n elements of this immutable map, and the other elements.
Defines the prefix of this object's toString representation.
Defines the prefix of this object's toString representation.
a string representation which starts the result of toString applied to this immutable map.
Unless overridden in subclasses, the string prefix of every map is "Map".
[use case] Sums up the elements of this collection .
Sums up the elements of this collection .
the sum of all elements in this immutable map of numbers of type Int.
Instead of Int, any other type T with an implicit Numeric[T] implementation
can be used as element type of the immutable map and as result type of sum.
Examples of such types are: Long, Float, Double, BigInt.
Sums up the elements of this collection .
Sums up the elements of this collection .
the result type of the + operator.
an implicit parameter defining a set of numeric operations
which includes the + operator to be used in forming the sum.
the sum of all elements of this immutable map with respect to the + operator in num.
Selects all elements except the first .
Selects all elements except the first .
Note: might return different results for different runs, unless the underlying collection type is ordered.
a immutable map consisting of all elements of this immutable map except the first one .
Selects first n elements.
Selects first n elements.
Note: might return different results for different runs, unless the underlying collection type is ordered.
Tt number of elements to take from this immutable map .
a immutable map consisting only of the first n elements of this immutable map, or else the
whole immutable map, if it has less than n elements.
Selects last n elements.
Selects last n elements.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the number of elements to take
a immutable map consisting only of the last n elements of this immutable map, or else the
whole immutable map, if it has less than n elements.
Takes longest prefix of elements that satisfy a predicate .
Takes longest prefix of elements that satisfy a predicate .
Note: might return different results for different runs, unless the underlying collection type is ordered.
The predicate used to test elements .
the longest prefix of this immutable map whose elements all satisfy
the predicate p.
The underlying collection seen as an instance of immutable.Map.
The underlying collection seen as an instance of immutable.Map.
By default this is implemented as the current collection object itself,
but this can be overridden.
[use case] Converts this immutable map to an array .
Converts this immutable map to an array .
an array containing all elements of this immutable map.
A ClassManifest must be available for the element type of this immutable map.
Converts this immutable map to an array .
Converts this immutable map to an array .
the type of the elements of the array. A ClassManifest for this type must
be available.
an array containing all elements of this immutable map .
A conversion from collections of type Repr to immutable.Map objects.
A conversion from collections of type Repr to immutable.Map objects.
By default this is implemented as just a cast, but this can be overridden.
Converts this immutable map to an indexed sequence .
Converts this immutable map to an indexed sequence .
an indexed sequence containing all elements of this immutable map .
Converts this immutable map to an iterable collection .
Converts this immutable map to an iterable collection .
an Iterable containing all elements of this immutable map.
Returns an Iterator over the elements in this immutable map .
Returns an Iterator over the elements in this immutable map . Will return the same Iterator if this instance is already an Iterator.
an Iterator containing all elements of this immutable map .
Converts this immutable map to a list .
Converts this immutable map to a list .
a list containing all elements of this immutable map .
Converts this immutable map to a map .
Converts this immutable map to a map . This method is unavailable unless the elements are members of Tuple2, each ((K, V)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.
a map containing all elements of this immutable map .
Converts this immutable map to a sequence .
Converts this immutable map to a sequence .
a sequence containing all elements of this immutable map .
Converts this immutable map to a set .
Converts this immutable map to a set .
a set containing all elements of this immutable map .
Converts this immutable map to a stream .
Converts this immutable map to a stream .
a stream containing all elements of this immutable map .
Converts this immutable map to a string .
Converts this immutable map to a string .
a string representation of this collection. By default this
string consists of the stringPrefix of this immutable map,
followed by all elements separated by commas and enclosed in parentheses.
Converts this immutable map to an unspecified Traversable .
Converts this immutable map to an unspecified Traversable . Will return the same collection if this instance is already Traversable.
a Traversable containing all elements of this immutable map .
This function transforms all the values of mappings contained
in this map with function f.
This function transforms all the values of mappings contained
in this map with function f.
A function over keys and values
the updated map
Transposes this immutable map of traversable collections into a immutable map of immutable maps .
Transposes this immutable map of traversable collections into a immutable map of immutable maps .
the type of the elements of each traversable collection .
an implicit conversion which asserts that the element type of this
immutable map is a Traversable.
a two-dimensional immutable map of immutable maps which has as nth row the nth column of this immutable map.
Converts this immutable map of pairs into two collections of the first and second halfs of each pair .
Converts this immutable map of pairs into two collections of the first and second halfs of each pair .
an implicit conversion which asserts that the element type of this immutable map is a pair .
a pair immutable maps, containing the first, respectively second half of each element pair of this immutable map .
use updated' instead
Add a key/value pair to this map .
Collects all values of this map in an iterable collection .
Collects all values of this map in an iterable collection .
the values of this map as an iterable .
Creates an iterator for all values in this map .
Creates an iterator for all values in this map .
an iterator over all values that are associated with some key in this map .
Creates a non-strict view of a slice of this immutable map .
Creates a non-strict view of a slice of this immutable map .
Note: the difference between view and slice is that view produces
a view of the current immutable map, whereas slice produces a new immutable map.
Note: view(from, to) is equivalent to view.slice(from, to)
Note: might return different results for different runs, unless the underlying collection type is ordered.
the index of the first element of the view
the index of the element following the view
a non-strict view of a slice of this immutable map, starting at index from and extending up to (but not including) index until.
Creates a non-strict view of this immutable map .
Creates a non-strict view of this immutable map .
a non-strict view of this immutable map .
The same map with a given default function !!! todo: move to general maps?
The same map with a given default function !!! todo: move to general maps?
The same map with a given default value
The same map with a given default value
Creates a non-strict filter of this immutable map .
Creates a non-strict filter of this immutable map .
Note: the difference between c filter p and c withFilter p is that
the former creates a new collection, whereas the latter only restricts
the domain of subsequent map, flatMap, foreach, and withFilter operations.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the predicate used to test elements .
an object of class WithFilter, which supports
map, flatMap, foreach, and withFilter operations.
All these operations apply to those elements of this immutable map which
satisfy the predicate p.
[use case] Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs .
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs . If one of the two collections is longer than the other, its remaining elements are ignored.
the type of the second half of the returned pairs
The iterable providing the second half of each result pair
a new immutable map containing pairs consisting of
corresponding elements of this immutable map and that. The length
of the returned collection is the minimum of the lengths of this immutable map and that.
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs .
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs . If one of the two collections is longer than the other, its remaining elements are ignored.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the first half of the returned pairs (this is always a supertype
of the collection's element type A).
the type of the second half of the returned pairs
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type (A1, B) being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, (A1, B), That].
is found.
The iterable providing the second half of each result pair
an implicit value of class CanBuildFrom which determines the
result class That from the current representation type Repr and the new element type (A1, B).
a new collection of type That containing pairs consisting of
corresponding elements of this immutable map and that. The length
of the returned collection is the minimum of the lengths of this immutable map and that.
[use case] Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs .
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs . If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.
the type of the second half of the returned pairs
The iterable providing the second half of each result pair
the element to be used to fill up the result if this immutable map is shorter than that.
the element to be used to fill up the result if that is shorter than this immutable map.
a new immutable map containing pairs consisting of
corresponding elements of this immutable map and that. The length
of the returned collection is the maximum of the lengths of this immutable map and that.
If this immutable map is shorter than that, thisElem values are used to pad the result.
If that is shorter than this immutable map, thatElem values are used to pad the result.
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs .
Returns a immutable map formed from this immutable map and another iterable collection by combining corresponding elements in pairs . If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.
Note: might return different results for different runs, unless the underlying collection type is ordered.
the iterable providing the second half of each result pair
the element to be used to fill up the result if this immutable map is shorter than that.
the element to be used to fill up the result if that is shorter than this immutable map.
a new collection of type That containing pairs consisting of
corresponding elements of this immutable map and that. The length
of the returned collection is the maximum of the lengths of this immutable map and that.
If this immutable map is shorter than that, thisElem values are used to pad the result.
If that is shorter than this immutable map, thatElem values are used to pad the result.
[use case] Zips this immutable map with its indices .
Zips this immutable map with its indices .
A new immutable map containing pairs consisting of all elements of this
immutable map paired with their index. Indices start at 0.
@example
List("a", "b", "c").zipWithIndex = List(("a", 0), ("b", 1), ("c", 2))
Zips this immutable map with its indices .
Zips this immutable map with its indices .
Note: might return different results for different runs, unless the underlying collection type is ordered.
the type of the first half of the returned pairs (this is always a supertype
of the collection's element type A).
the class of the returned collection. Where possible, That is
the same class as the current collection class Repr, but this
depends on the element type (A1, Int) being admissible for that class,
which means that an implicit instance of type CanBuildFrom[Repr, (A1, Int), That].
is found.
A new collection of type That containing pairs consisting of all elements of this
immutable map paired with their index. Indices start at 0.