unzip ( assoc -- keys values ) - Factor Documentation

Vocabulary
assocs

Inputs and outputs

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

Definition

USING: kernel sequences ;

IN: assocs

: unzip ( assoc -- keys values )
    dup assoc-empty? [ drop { } { } ] [ >alist flip first2 ] if
    ;