remove-nth! ( n seq -- seq )
Factor handbook » The language » Collections » Sequence operations » Destructive sequence operations

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Vocabulary
sequences

Inputs

n	a non-negative integer
seq	a resizable mutable sequence

Outputs

seq	a resizable mutable sequence

Word description
Removes the n th element from the sequence, shifting all other elements down and reducing its length by one.

Side effects
Modifies seq

See also
remove, remove-nth, remove-eq, remove-eq!, remove!

Definition

USING: kernel math ;

IN: sequences

: remove-nth! ( n seq -- seq )
    [ [ dup 1 + ] dip delete-slice ] keep ;