head-slice ( seq n -- slice )
Factor handbook » The language » Collections » Sequence operations » Subsequences and slices

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Vocabulary
sequences

Inputs

seq	a sequence
n	a non-negative integer

Outputs

slice

a slice

Word description
Outputs a virtual sequence sharing storage with the first n elements of the input sequence.

Errors
Throws an error if the index is out of bounds.

See also
head, head*, head-slice*

Definition

USING: sequences.private ;

IN: sequences

: head-slice ( seq n -- slice ) head-to-index <slice> ; inline