reverse ( seq -- newseq )
Factor handbook » The language » Collections » Sequence operations » Reshaping sequences

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Vocabulary
sequences

Inputs

seq	a sequence

Outputs

newseq

a new sequence

Word description
Outputs a new sequence having the same elements as seq but in reverse order.

See also
<reversed>, reverse!

Definition

USING: kernel sequences.private ;

IN: sequences

: reverse ( seq -- newseq )
    [
        dup [ length ] keep new-sequence
        [ 0 swap copy-unsafe ] keep reverse!
    ] keep like ;