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Re: Having trouble loading a hash with map

by Utilitarian (Vicar)
on May 03, 2012 at 14:38 UTC ( #968757=note: print w/ replies, xml ) Need Help??


in reply to Having trouble loading a hash with map

#!/usr/bin/perl -w use strict; use Data::Dumper; { local $/; # unset the input record seperator in order to slurp the + contents of STDIN my %hash; %hash = map { chomp; $_ => '1' } split /(\s+|\W+)/, <>; } print Dumper(\%hash); # because that's how it's supposed to be used ;)
print "Good ",qw(night morning afternoon evening)[(localtime)[2]/6]," fellow monks."


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Re^2: Having trouble loading a hash with map
by AnomalousMonk (Abbot) on May 03, 2012 at 18:58 UTC

    If the File::Slurp module is not available, I find the
        do { local $/;  <> }
    expression preferable due to narrower, thus better controlled, scoping. (In original reply, lexical  my %hash; was defined within, accessed from outside of a block.)

    >perl -wMstrict -le "use Data::Dumper; ;; my %hash = map { chomp; $_ => '1' } split /(\s+|\W+)/, do { local $/; <> }; ;; print Dumper \%hash; " new_ib1.txt | head -10 $VAR1 = { '' => '1', 'BIG' => '1', 'you' => '1', 'model' => '1', 'NOT' => '1', ',' => '1', 'understand' => '1', 'MY' => '1', '2' => '1',

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