unzip ( assoc -- keys values ) (original) (raw)

unzip ( assoc -- keys values )
Factor handbook » The language » Collections » Associative mapping operations » Associative mapping conversions

Vocabulary
assocs

Inputs

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, 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 ] keep [ >array ] bi@ ;

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

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