Question

I want to initialize a group of array elements the same value using a single line. I know I could use a for loop, but I want to know if there is a way simpler way to do it.

for e.g., I have an array of zeros. And I want to initialize elements 4 to 9 as 1. I would think of doing something like,

my @array = (0) x 10;
for my $i (3 .. 8) {
    $array[$i] = 1;
}

Answer 1

Why not use an array slice?

@array = (0) x 10;
@array[3..8] = (1) x 6;   # or something > 6

This is easier to understand than a splice and clearer than a map.

Instead of supplying a single index, we use a list [3..8]. We have to adjust the sigil to @, because we want a list context.