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ronaldxs/gist:e0a325c9e3bc716cf7f7

Created August 3, 2015 20:55
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attribute mutator
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gistfile1.txt
class A {
has $.a;
method a is rw {
Proxy.new(
FETCH => -> $self { $!a },
STORE => -> $self, Int $v { $!a = $v * 2 }
);
}
}
my $o = A.new;
$o.a = 123;
say $o.a;
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