collect-index-by ( ... seq quot: ( ... obj -- ... key ) -- ... assoc )

Vocabulary

assocs.extras

Inputs

seq	an object
quot	a quotation with stack effect ( ... obj -- ... key )

Outputs

assoc

an object

Definition

USING: kernel ;

IN: assocs.extras

: collect-index-by
    ( ... seq quot: ( ... obj -- ... key ) -- ... assoc )
    [ H{ } clone ] 2dip collect-index-by! ; inline