map! ( ... seq quot: ( ... elt -- ... newelt ) -- ... seq )
Factor handbook » The language » Collections » Sequence operations » Destructive sequence operations

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accumulate! ( ... seq identity quot: ( ... prev elt -- ... next ) -- ... final seq )

Vocabulary
sequences

Inputs

seq	a mutable sequence
quot	a quotation with stack effect ( ... elt -- ... newelt )

Outputs

seq	a mutable sequence

Word description
Applies the quotation to each element yielding a new element, storing the new elements back in the original sequence. Returns the original sequence.

Errors
Throws an error if the sequence is immutable, or the sequence cannot hold elements of the type output by quot.

Side effects
Modifies seq

See also
map, map-as, map-index, map-index-as

Definition

USING: kernel sequences.private ;

IN: sequences

: map!
    ( ... seq quot: ( ... elt -- ... newelt ) -- ... seq )
    over [ map-into ] keep ; inline