Package it.unimi.dsi.fastutil.objects

Class Object2IntFunctions.PrimitiveFunction<K>

java.lang.Object
it.unimi.dsi.fastutil.objects.Object2IntFunctions.PrimitiveFunction<K>
All Implemented Interfaces:
Function<K,​java.lang.Integer>, Object2IntFunction<K>, java.util.function.Function<K,​java.lang.Integer>, java.util.function.ToIntFunction<K>
Enclosing class:
Object2IntFunctions
public static class Object2IntFunctions.PrimitiveFunction<K>
extends java.lang.Object
implements Object2IntFunction<K>
An adapter for mapping generic total functions to partial primitive functions.

  • Method Details

    • containsKey

      public boolean containsKey​(java.lang.Object key)
      Description copied from interface: Function
      Returns true if this function contains a mapping for the specified key.

      Note that for some kind of functions (e.g., hashes) this method will always return true. This default implementation, in particular, always return true.

      Specified by:
      containsKey in interface Function<K,​java.lang.Integer>
      Parameters:
      key - the key.
      Returns:
      true if this function associates a value to key.
      See Also:
      Map.containsKey(Object)

    • getInt

      public int getInt​(java.lang.Object key)
      Description copied from interface: Object2IntFunction
      Returns the value to which the given key is mapped.
      Specified by:
      getInt in interface Object2IntFunction<K>
      Parameters:
      key - the key.
      Returns:
      the corresponding value, or the default return value if no value was present for the given key.
      See Also:
      Function.get(Object)

    • getOrDefault

      public int getOrDefault​(java.lang.Object key, int defaultValue)
      Description copied from interface: Object2IntFunction
      Returns the value associated by this function to the specified key, or give the specified value if not present.
      Specified by:
      getOrDefault in interface Object2IntFunction<K>
      Parameters:
      key - the key.
      defaultValue - the value to return if not present.
      Returns:
      the corresponding value, or defaultValue if no value was present for the given key.
      See Also:
      Function.getOrDefault(Object, Object)

    • get

      @Deprecated public java.lang.Integer get​(java.lang.Object key)
      Deprecated.
      Description copied from interface: Object2IntFunction
      Returns the value associated by this function to the specified key.
      Specified by:
      get in interface Function<K,​java.lang.Integer>
      Specified by:
      get in interface Object2IntFunction<K>
      Parameters:
      key - the key.
      Returns:
      the corresponding value, or null if no value was present for the given key.
      See Also:
      Map.get(Object)

    • getOrDefault

      @Deprecated public java.lang.Integer getOrDefault​(java.lang.Object key, java.lang.Integer defaultValue)
      Deprecated.
      Description copied from interface: Object2IntFunction
      Returns the value associated by this function to the specified key, or give the specified value if not present.
      Specified by:
      getOrDefault in interface Function<K,​java.lang.Integer>
      Specified by:
      getOrDefault in interface Object2IntFunction<K>
      Parameters:
      key - the key.
      defaultValue - the default value to return if not present.
      Returns:
      the corresponding value, or defaultValue if no value was present for the given key.
      See Also:
      Map.getOrDefault(Object, Object)

    • put

      @Deprecated public java.lang.Integer put​(K key, java.lang.Integer value)
      Deprecated.
      Description copied from interface: Object2IntFunction
      Associates the specified value with the specified key in this function (optional operation).
      Specified by:
      put in interface Function<K,​java.lang.Integer>
      Specified by:
      put in interface Object2IntFunction<K>
      Parameters:
      key - the key.
      value - the value.
      Returns:
      the old value, or null if no value was present for the given key.
      See Also:
      Map.put(Object,Object)