Let's say I have a naive code generator which generated this: 
 {
   my $name = <STDIN>;
    print $name;
}

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This involves a useless assignment and could be optimized to : 
{
   print <STDIN>;
}

[download]
because the my variable was not offered life outside this scope.

In reply to Will Perl 6 optimize away useless assignments? by princepawn

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