subseq-start ( subseq seq -- i/f )
Factor handbook » The language » Collections » Sequence operations » Searching sequences

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Vocabulary
sequences

Inputs

subseq	a sequence
seq	a sequence

Outputs

i/f	a start index or f

Word description
Outputs the start index of the first contiguous subsequence equal to subseq, or f if no matching subsequence is found.

Definition

USING: kernel ;

IN: sequences

: subseq-start ( subseq seq -- i/f ) swap subseq-index ;
    deprecated inline