Alias for concat
Alias for prependChain
Alias for prependChain
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(4, 5, 6) scala> Chain(1, 2, 3) ++: nec res0: cats.data.NonEmptyChain[Int] = Chain(1, 2, 3, 4, 5, 6)
Alias for prepend.
Alias for append.
Alias for appendChain
Alias for appendChain
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(1, 2, 4, 5) scala> nec :++ Chain(3, 6, 9) res0: cats.data.NonEmptyChain[Int] = Chain(1, 2, 4, 5, 3, 6, 9)
Returns a new Chain consisting of this followed by a
.
Returns a new Chain consisting of this followed by a
. O(1) runtime.
Appends the given chain in O(1) runtime.
Returns a new Chain
containing all elements where the result of pf
is final defined.
Returns a new Chain
containing all elements where the result of pf
is final defined.
scala> import cats.data.NonEmptyChain scala> import cats.implicits._ scala> val nec = NonEmptyChain(4, 5, 6).map(n => if (n % 2 == 0) Some(n) else None) scala> nec.collect { case Some(n) => n } res0: cats.data.Chain[Int] = Chain(4, 6)
Concatenates this with c
in O(1) runtime.
Concatenates this with c
in O(1) runtime.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(1, 2, 4, 5) scala> nec ++ NonEmptyChain(7, 8) res0: cats.data.NonEmptyChain[Int] = Chain(1, 2, 4, 5, 7, 8)
Tests if some element is contained in this chain.
Tests if some element is contained in this chain.
scala> import cats.data.NonEmptyChain scala> import cats.implicits._ scala> val nec = NonEmptyChain(4, 5, 6) scala> nec.contains(5) res0: Boolean = true
Yields to Some(a, Chain[A]) with a
removed where f
holds for the first time,
otherwise yields None, if a
was not found
Traverses only until a
is found.
Remove duplicates.
Remove duplicates. Duplicates are checked using Order[_]
instance.
Tests whether a predicate holds for at least one element of this chain.
Filters all elements of this chain that do not satisfy the given predicate.
Filters all elements of this chain that satisfy the given predicate.
Returns the first value that matches the given predicate.
Applies the supplied function to each element and returns a new NonEmptyChain from the concatenated results
Left-associative fold using f.
Right-associative fold using f.
Tests whether a predicate holds for all elements of this chain.
Groups elements inside this NonEmptyChain
according to the Order
of the keys produced by the given mapping function.
Returns the first element of this chain.
Returns the number of elements in this chain.
Returns a new NonEmptyChain consisting of a
followed by this.
Returns a new NonEmptyChain consisting of a
followed by this. O(1) runtime.
Prepends the given chain in O(1) runtime.
Reduce using the Semigroup of A
Left-associative reduce using f.
Left-associative reduce using f.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(4, 5, 6) scala> nec.reduceLeft(_ + _) res0: Int = 15
Apply f
to the "initial element" of this chain and lazily combine it
with every other value using the given function g
.
Apply f
to the "initial element" of this chain and lazily combine it
with every other value using the given function g
.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(4, 5, 6) scala> nec.reduceLeftTo(_.toString)((acc, cur) => acc + cur.toString) res0: String = 456
Right-associative reduce using f.
Right-associative reduce using f.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(4, 5, 6) scala> nec.reduceRight(_ + _) res0: Int = 15
Apply f
to the "initial element" of this chain and lazily combine it
with every other value using the given function g
.
Apply f
to the "initial element" of this chain and lazily combine it
with every other value using the given function g
.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(4, 5, 6) scala> nec.reduceRightTo(_.toString)((cur, acc) => acc + cur.toString) res0: String = 654
Reverses this NonEmptyChain
Returns all but the first element of this chain.
Converts this chain to a Chain
Converts this chain to a NonEmptyList
.
Converts this chain to a NonEmptyList
.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(1, 2, 3, 4, 5) scala> nec.toNonEmptyList res0: cats.data.NonEmptyList[Int] = NonEmptyList(1, 2, 3, 4, 5)
Converts this chain to a NonEmptyVector
.
Converts this chain to a NonEmptyVector
.
scala> import cats.data.NonEmptyChain scala> val nec = NonEmptyChain(1, 2, 3, 4, 5) scala> nec.toNonEmptyVector res0: cats.data.NonEmptyVector[Int] = NonEmptyVector(1, 2, 3, 4, 5)
Returns the head and tail of this NonEmptyChain.
Returns the head and tail of this NonEmptyChain. Amortized O(1).
Zips this NonEmptyChain
with another NonEmptyChain
and applies a function for each pair of elements.
Zips this NonEmptyChain
with another NonEmptyChain
and applies a function for each pair of elements.
scala> import cats.data.NonEmptyChain scala> val as = NonEmptyChain(1, 2, 3) scala> val bs = NonEmptyChain("A", "B", "C") scala> as.zipWith(bs)(_ + _) res0: cats.data.NonEmptyChain[String] = Chain(1A, 2B, 3C)