Arguments

ls'  input list where the item at position 'idx' is to be set

idx  the 0-based index of the item to be set by new 'val'

val  the new value to be set for the item at index 'idx'

Return

list 'lst' with item at position 'idx' set to 'val';
if 'idx' is < 0, the unchanged list is returned
if 'idx' is greater than the list length, the list is filled with NIL values before added item 'val'

Example

Alias

Remarks

index 'idx' is 0-based