insert-nth ( elt n seq -- seq' )
Factor handbook » The language » Collections » Sequence operations » Adding and removing sequence elements

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Vocabulary
sequences

Inputs

elt	an object
n	an integer
seq	a sequence

Outputs

seq'	a sequence

Word description
Creates a new sequence where the nth index is set to the input object.

Examples

USING: prettyprint sequences ; 40 3 { 10 20 30 50 } insert-nth .
{ 10 20 30 40 50 }

Definition

USING: kernel ;

IN: sequences

: insert-nth ( elt n seq -- seq' )
    swap cut-slice [ swap suffix ] dip append ;