Value capture

All blocks are anonymous closures in Raku, and parameters are lexicals, so it's easy to generate a list of them. We'll use a gather/take generator loop, and call the closures in random order, just to keep things interesting.

my @c = gather for ^10 -> $i {
    take { $i * $i }
}

.().say for @c.pick(*);  # call them in random order

Output:

36
64
25
1
16
0
4
9
81
49

Or equivalently, using a more functional notation:

say .() for pick *, map -> $i { -> {$i * $i} }, ^10