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Re: One-liner to join keys on a two-dimensionnal hash ?

by ikegami (Patriarch)
on Dec 29, 2021 at 14:44 UTC ( [id://11140006]=note: print w/replies, xml ) Need Help??

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  1. or download this
    my $expr =
   join '|',
      map { keys( %{ $replaces{$_} } ) }
         keys( %replaces );
  2. or download this
    my @keys;
for ( keys( %replaces ) ) {
...
}

my $expr = join '|', @keys;

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