pozorvlak

Updating a single variable in-place: closures get the new value because they fetch it from the lexical scope

$ cat closures.pl 
my @closures;
for (my $i = 0; $i < 3; $i++) {
    push @closures, sub { print "$i\n"; };
}
for my $fn (@closures) {
    $fn->();
}

pozorvlak

# Results of solving a "grid of arithmetic operations" problem in MiniZinc,
# using Gecode 6.3.0 at -O5.
# Program listing at https://mathstodon.xyz/@pozorvlak/114148447412533853

v = 
[|  2, 34,  4,  9, 30, 15
 | 35, 11, 31,  6, 21, 28
 |  5, 14, 10,  1, 16, 18
 | 13, 20, 29, 23, 19,  7
 | 33, 27,  8, 26,  3, 24