unrolled-map-as ( seq len quot: ( x -- newx ) exemplar -- newseq )
Unrolled sequence iteration combinators

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Vocabulary
sequences.unrolled

Inputs

seq	a sequence
len	an integer
quot	a quotation with stack effect ( x -- newx )
exemplar	a sequence

Outputs

newseq

a sequence

Word description
Unrolled version of map-as that maps over the first len elements of seq. len must be a compile-time constant. If seq has fewer than len elements, raises an unrolled-bounds-error.

Definition

USING: kernel sequences.unrolled.private ;

IN: sequences.unrolled

: unrolled-map-as
    ( seq len quot: ( x -- newx ) exemplar -- newseq )
    [ unrolled-bounds-check ] dip unrolled-map-as-unsafe ;
    inline