Tweak
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use v6;
# https://opensource.com/article/18/11/how-make-perl-more-classy
class Answer {
has Int $.x = 42;
submethod TWEAK() {
$!x = 666 if $!x == 314; # 100 x pi is also bad
}
}
my $a = Answer.new(x => 123);
say $a.x;
my $a2 = Answer.new(x => 314);
say $a2.x;
Raku
INFO