append-as ( seq1 seq2 exemplar -- newseq )
Factor handbook » The language » Collections » Sequence operations » Appending sequences

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Vocabulary
sequences

Inputs

seq1	a sequence
seq2	a sequence
exemplar	a sequence

Outputs

newseq

a sequence

Word description
Outputs a new sequence of the same type as exemplar consisting of the elements of seq1 followed by seq2.

Errors
Throws an error if seq1 or seq2 contain elements not permitted in sequences of the same class as exemplar.

Examples

USING: prettyprint sequences ; { 1 2 } B{ 3 4 } B{ } append-as .
B{ 1 2 3 4 }

USING: prettyprint sequences strings ; "go" "ing" SBUF" " append-as .
SBUF" going"

See also
append, append!, 3append, 3append-as, push-all

Definition

USING: kernel math sequences.private ;

IN: sequences

: append-as ( seq1 seq2 exemplar -- newseq )
    [ 2dup 2length + ] dip [ (append) ] new-like ; inline