assoc-filter! ( ... assoc quot: ( ... key value -- ... ? ) -- ... assoc )
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Vocabulary
assocs

Inputs

assoc	an assoc
quot	a quotation with stack effect ( ... key value -- ... ? )

Outputs

assoc

an assoc

Word description
Removes all entries for which the predicate quotation yields false.

Side effects
Modifies assoc

See also
assoc-filter, assoc-filter-as

Definition

USING: kernel ;

IN: assocs

: assoc-filter!
    ( ... assoc quot: ( ... key value -- ... ? ) -- ... assoc )
    over
    [ '[ _ keepd swap [ drop ] [ _ delete-at ] if ] assoc-each ]
    keep ; inline