zip-as ( keys values exemplar -- assoc )
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Vocabulary
assocs

Inputs

keys	a sequence
values	a sequence
exemplar	a sequence

Outputs

assoc

a sequence of key/value pairs of type exemplar

Word description
Combines two sequences pairwise into a single sequence of key/value pairs of type exemplar.

Notes
Exemplar must be a sequence type; hashtables will not work yet.

Examples

USING: prettyprint assocs ; { 1 2 3 } { 4 5 6 } V{ } zip-as .
V{ { 1 4 } { 2 5 } { 3 6 } }

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

Definition

USING: arrays kernel sequences ;

IN: assocs

: zip-as ( keys values exemplar -- assoc )
    dup sequence?
    [ [ 2array ] swap 2map-as ] [
        [ 2dup min-length ] dip new-assoc
        [ [ set-at ] with-assoc 2each ] keep
    ] if ; inline