my @bla = map{ tr/h//d; $_ } @{\@arr};

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Your @{\...} does nothing. You surely meant 

my @bla = map{ tr/h//d; $_ } @{[@arr]};
#                              ^    ^

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- tye        

In reply to Re^2: non aliased default var $_ (not @{\...}) by tye
in thread non aliased default var $_ by LanX

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