unzip ( assoc -- keys values )
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zip-with-as ( ... seq quot: ( ... key -- ... value ) exemplar -- ... assoc )

Vocabulary
assocs

Inputs

assoc

an assoc

Outputs

keys	a sequence
values	a sequence

Word description
Outputs an array of keys and an array of values of the input assoc.

Examples

USING: prettyprint assocs kernel ; { { 1 4 } { 2 5 } { 3 6 } } unzip [ . ] bi@
{ 1 2 3 } { 4 5 6 }

See also
zip, zip-as, zip-index, zip-index-as, zip-with, zip-with-as

Definition

IN: assocs

GENERIC: unzip ( assoc -- keys values )

Methods

USING: assocs kernel sequences ;

M: assoc unzip
    dup assoc-empty? [ drop { } { } ] [ >alist flip first2 ] if
    ;


USING: accessors arrays assocs kernel sequences ;

M: enumerated unzip
    seq>> [ length <iota> ] keep [ >array ] bi@ ;


USING: accessors assocs hashtables hashtables.private kernel
sequences vectors ;

M: hashtable unzip
    [ assoc-size dup [ <vector> ] bi@ ] [ array>> ] bi
    [ [ suffix! ] bi-curry@ bi* ] each-pair [ { } like ] bi@ ;