fun with induce

[daxim]

use Kavorka qw(fun);
use Scalar::Induce qw(induce void);

fun repeat($val!, $times!) {
    induce { $_-- ? $val : void undef $_ } $times;
}
repeat('foo', 5);
# ('foo', 'foo', 'foo', 'foo', 'foo')
repeat({bar => 42}, 3);
# 0  HASH(0x138be78)
#    bar => 42
# 1  HASH(0x138be78)
#    -> REUSED_ADDRESS
# 2  HASH(0x138be78)
#    -> REUSED_ADDRESS

fun range(:$from = 1, :$to!, :$step = 1) {
    induce {
        my $curr = $_;
        undef $_ if ($_ += $step) > $to;
        return $curr;
    } $from;
}
range(step => 1.1, from => 4, to => 17);
# (4, 5.1, 6.2, 7.3, 8.4, 9.5, 10.6, 11.7, 12.8, 13.9, 15, 16.1)
range(to => 7);
# (1, 2, 3, 4, 5, 6, 7)

fun partition($n!, @l!) {
    induce {
        my @part = splice @$_, 0, $n;
        undef $_ unless @$_;
        return \@part;
    } \@l
}
partition(3, qw(Aragorn Boromir Frodo Gandalf Gimli Legolas Merry Pipp
+in Sam));
# (
#     ['Aragorn', 'Boromir', 'Frodo'],
#     ['Gandalf', 'Gimli', 'Legolas'],
#     ['Merry', 'Pippin', 'Sam']
# )

fun factor($n!) {
    induce {
        for my $i (2..$_/2) {
            unless ($_ % $i) {
                $_ /= $i;
                return $i;
            }
        }
        my $curr = $_;
        undef $_;
        return $curr;
    } $n
}
factor(138600); # (2, 2, 2, 3, 3, 5, 7, 11)

[no_slogan]

Looks like Kavorka hasn't worked since 5.20, so that's certainly "fun." Let's add more fun.

        for my $i (2..$_/2) {
=>
        for my $i (2..sqrt) {