speiger.src.collections.booleans.functions.function

Interface BooleanPredicate

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface BooleanPredicate

A Type Specific Function interface that reduces boxing/unboxing and fills the gaps of interfaces that are missing.

Method Summary

Modifier and Type	Method and Description
static BooleanPredicate	alwaysFalse() Creates a Always false function that may be useful if you don't need to process information or just want a default.
static BooleanPredicate	alwaysTrue() Creates a Always true function that may be useful if you don't need to process information or just want a default.
default BooleanPredicate	andThen(BooleanPredicate after) Returns a composed function that first applies this function to its input, and then applies the after function to the result.
default BooleanPredicate	andType(BooleanPredicate other) A Type specific and-function helper function that reduces boxing/unboxing
default BooleanPredicate	compose(BooleanPredicate before) Returns a composed function that first applies the before function to its input, and then applies this function to the result.
static BooleanPredicate	identity() Creates a Default function that returns the input provided.
default BooleanPredicate	negate() A type specific inverter function
default BooleanPredicate	orType(BooleanPredicate other) A Type specific or-function helper function that reduces boxing/unboxing
boolean	test(boolean k) Type Specific get function to reduce boxing/unboxing

Method Detail

test

boolean test(boolean k)

Type Specific get function to reduce boxing/unboxing

Parameters:

k - the value that should be processed

Returns:

the result of the function

identity

static BooleanPredicate identity()

Creates a Default function that returns the input provided.

Returns:

a input returning function

compose

default BooleanPredicate compose(BooleanPredicate before)

Returns a composed function that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.

Parameters:

before - the function that should be used first

Returns:

a composed function with a different starting function.

andThen

default BooleanPredicate andThen(BooleanPredicate after)

Returns a composed function that first applies this function to its input, and then applies the after function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.

Parameters:

after - the function that should be used last

Returns:

a composed function with a different starting function.

alwaysTrue

static BooleanPredicate alwaysTrue()

Creates a Always true function that may be useful if you don't need to process information or just want a default.

Returns:

a default returning function

alwaysFalse

static BooleanPredicate alwaysFalse()

Creates a Always false function that may be useful if you don't need to process information or just want a default.

Returns:

a default returning function

andType

default BooleanPredicate andType(BooleanPredicate other)

A Type specific and-function helper function that reduces boxing/unboxing

Parameters:

other - the other function that should be merged with.

Returns:

a function that compares values in a and comparason

negate

default BooleanPredicate negate()

A type specific inverter function

Returns:

the same function but inverts the result

orType

default BooleanPredicate orType(BooleanPredicate other)

A Type specific or-function helper function that reduces boxing/unboxing

Parameters:

other - the other function that should be merged with.

Returns:

a function that compares values in a or comparason