Class Reference2ShortFunctions

java.lang.Object
it.unimi.dsi.fastutil.objects.Reference2ShortFunctions

public final class Reference2ShortFunctions extends Object
A class providing static methods and objects that do useful things with type-specific functions.
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  • Field Details Link icon

  • Method Details Link icon

    • singleton Link icon

      public static <K> Reference2ShortFunction<K> singleton(K key, short value)
      Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

      Note that albeit the returned function is immutable, its default return value may be changed.

      Parameters:
      key - the only key of the returned function.
      value - the only value of the returned function.
      Returns:
      a type-specific immutable function containing just the pair &lt;key,value&gt;.
    • singleton Link icon

      public static <K> Reference2ShortFunction<K> singleton(K key, Short value)
      Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

      Note that albeit the returned function is immutable, its default return value may be changed.

      Parameters:
      key - the only key of the returned function.
      value - the only value of the returned function.
      Returns:
      a type-specific immutable function containing just the pair &lt;key,value&gt;.
    • synchronize Link icon

      public static <K> Reference2ShortFunction<K> synchronize(Reference2ShortFunction<K> f)
      Returns a synchronized type-specific function backed by the given type-specific function.
      Parameters:
      f - the function to be wrapped in a synchronized function.
      Returns:
      a synchronized view of the specified function.
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    • synchronize Link icon

      public static <K> Reference2ShortFunction<K> synchronize(Reference2ShortFunction<K> f, Object sync)
      Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.
      Parameters:
      f - the function to be wrapped in a synchronized function.
      sync - an object that will be used to synchronize the access to the function.
      Returns:
      a synchronized view of the specified function.
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    • unmodifiable Link icon

      public static <K> Reference2ShortFunction<K> unmodifiable(Reference2ShortFunction<? extends K> f)
      Returns an unmodifiable type-specific function backed by the given type-specific function.
      Parameters:
      f - the function to be wrapped in an unmodifiable function.
      Returns:
      an unmodifiable view of the specified function.
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    • primitive Link icon

      public static <K> Reference2ShortFunction<K> primitive(Function<? super K,? extends Short> f)
      Returns a (partial) type-specific function based on the given total generic function.

      The returned function contains all keys which are not mapped to null. If the function already is a primitive function, it is returned without changes.

      Warning: If the given function is a “widened” primitive function (e.g. an Int2IntFunction given to Short2ShortFunctions), it still is wrapped into a proxy, decreasing performance.

      Parameters:
      f - the function to be converted to a type-specific function.
      Returns:
      a primitive view of the specified function.
      Throws:
      NullPointerException - if f is null.
      Since:
      8.1.0
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