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  1. or download this
    use v5.10;   # or higher
    ...
    
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    use feature qw(say);
    ...
    
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    $_ = 'My name is Paquito';
    CORE::say if /My name is/;
    ...
    
    tr/A-Z/a-z/;
    CORE::say;
    
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    Bareword "say" not allowed while "strict subs" in use at ./say.pl line
    + xyz.