Arguments

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

idx  the index of the item to be replaced by new val

val  the new value to be set for the item

Return

list lst without item at position idx;
if there is no item idx in lst the list remains unchanged;
if idx is < 0 or greater than the list length, the unchanged list is returned

Example

(vle-subst-nth '(1 2 3 4 5) 2 99)    => '(1 2 99 4 5)
(vle-subst-nth '(1 2 3 4 5) 10 99)  => '(1 2 3 4 5)

Alias

vle-replace

Remarks

index idx is 0-based