Package it.unimi.dsi.fastutil.floats
Class Float2BooleanFunctions
- java.lang.Object
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- it.unimi.dsi.fastutil.floats.Float2BooleanFunctions
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public final class Float2BooleanFunctions extends java.lang.Object
A class providing static methods and objects that do useful things with type-specific functions.- See Also:
Function
,Collections
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
Float2BooleanFunctions.EmptyFunction
An immutable class representing an empty type-specific function.static class
Float2BooleanFunctions.PrimitiveFunction
An adapter for mapping generic total functions to partial primitive functions.static class
Float2BooleanFunctions.Singleton
An immutable class representing a type-specific singleton function.static class
Float2BooleanFunctions.SynchronizedFunction
A synchronized wrapper class for functions.static class
Float2BooleanFunctions.UnmodifiableFunction
An unmodifiable wrapper class for functions.
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Field Summary
Fields Modifier and Type Field Description static Float2BooleanFunctions.EmptyFunction
EMPTY_FUNCTION
An empty type-specific function (immutable).
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Float2BooleanFunction
primitive(java.util.function.Function<? super java.lang.Float,? extends java.lang.Boolean> f)
Returns a (partial) type-specific function based on the given total generic function.static Float2BooleanFunction
singleton(float key, boolean value)
Returns a type-specific immutable function containing only the specified pair.static Float2BooleanFunction
singleton(java.lang.Float key, java.lang.Boolean value)
Returns a type-specific immutable function containing only the specified pair.static Float2BooleanFunction
synchronize(Float2BooleanFunction f)
Returns a synchronized type-specific function backed by the given type-specific function.static Float2BooleanFunction
synchronize(Float2BooleanFunction f, java.lang.Object sync)
Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.static Float2BooleanFunction
unmodifiable(Float2BooleanFunction f)
Returns an unmodifiable type-specific function backed by the given type-specific function.
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Field Detail
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EMPTY_FUNCTION
public static final Float2BooleanFunctions.EmptyFunction EMPTY_FUNCTION
An empty type-specific function (immutable). It is serializable and cloneable.
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Method Detail
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singleton
public static Float2BooleanFunction singleton(float key, boolean 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
<key,value>
.
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singleton
public static Float2BooleanFunction singleton(java.lang.Float key, java.lang.Boolean 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
<key,value>
.
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synchronize
public static Float2BooleanFunction synchronize(Float2BooleanFunction 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.
- See Also:
Collections.synchronizedMap(java.util.Map)
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synchronize
public static Float2BooleanFunction synchronize(Float2BooleanFunction f, java.lang.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.
- See Also:
Collections.synchronizedMap(java.util.Map)
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unmodifiable
public static Float2BooleanFunction unmodifiable(Float2BooleanFunction 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.
- See Also:
Collections.unmodifiableMap(java.util.Map)
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primitive
public static Float2BooleanFunction primitive(java.util.function.Function<? super java.lang.Float,? extends java.lang.Boolean> 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 toShort2ShortFunctions
), 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:
java.lang.NullPointerException
- iff
is null.- Since:
- 8.1.0
- See Also:
Float2BooleanFunctions.PrimitiveFunction
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