Same thing, just slightly shorter (and maybe clearer):

#! /usr/bin/perl
use strict;
use Data::Dumper;

my %hash;
/^(\d+).*/ and $hash{$1}++ for <DATA>;

print Dumper \%hash;

__DATA__
817    5:00
817    5:00
817    5:15
123    4:45
817    5:30
495    7:45

[download]

_______________
DamnDirtyApe 
Those who know that they are profound strive for clarity. Those who
would like to seem profound to the crowd strive for obscurity.
            --Friedrich Nietzsche

In reply to Re: Re: count of a word occurrence by DamnDirtyApe
in thread count of a word occurrence by Anonymous Monk

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