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 nth element from the sequence, shifting all other elements down and reducing its length by one.

Notes
The sequence seq MUST be growable. See Resizable sequence implementation.

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 ;