Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

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."


Comment on Re: Having trouble loading a hash with map
Select or Download Code
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',

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://968757]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others examining the Monastery: (8)
As of 2014-12-19 23:11 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (94 votes), past polls