?delete ( elt set -- ? )

Vocabulary

sets

Inputs

elt	an object
set	a set

Outputs

?

a boolean

Word description

A version of delete which returns whether the element was removed from the set.

Definition

IN: sets

GENERIC: ?delete ( elt set -- ? )

Methods

USING: hash-sets hash-sets.private sets ;

M: hash-set ?delete (delete) ;


USING: kernel sets ;

M: set ?delete 2dup in? [ delete t ] [ 2drop f ] if ;


USING: hash-sets.wrapped hash-sets.wrapped.private sets ;

M: wrapped-hash-set ?delete wrapper@ ?delete ; inline