collections/functions/types.go

package functions

type (
	// Consumer takes an argument of type T and returns nothing.
	Consumer[T any] func(T)

	// Function takes an argument of type T and returns a result of type U.
	Function[T, U any] func(T) U

	// Predicate takes an argument of type T and returns a boolean result.
	Predicate[T any] func(T) bool

	// Supplier takes no argument and returns a result of type T.
	Supplier[T any] func() T

	// UnaryOperator takes an argument of type T and returns a result of type T.
	UnaryOperator[T any] func(T) T

	// BinaryOperator takes two arguments of type T and returns a result of type T.
	BinaryOperator[T any] func(T, T) T

	// Comparator takes two arguments of type T and returns a boolean result.
	Comparator[T any] func(T, T) bool
)