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Re: how to iterate over multiple hashes with same key value

by Utilitarian (Vicar)
on Jul 02, 2013 at 06:12 UTC ( #1041960=note: print w/ replies, xml ) Need Help??


in reply to Reaped: how to iterate over multiple hashes with same key value

When examining your data you should probably examine what you want, in this cae 2 arrays keyed on the first column, there's no need to create sepearate data structures and in fact having a single data structure makes passing it to subsequent functions easier. So here's a solution using a single data structure with each customer referencing 2 arrays, one for time and the other for location.

~/$ cat tmp.pl #!/usr/bin/perl use strict; use warnings; open(my $customers, $ARGV[0])|| die "Couldn't open $ARGV[0] $!\n"; my %cust; while(<$customers>){ chomp; my @rec=split(/\s+/, $_); push @{$cust{$rec[1]}->{time}},$rec[0]; push @{$cust{$rec[1]}->{location}},$rec[2]; } for my $cust (sort keys %cust){ print "$cust: ",join(" ",@{$cust{$cust}->{time}})," : ",join(" ",@ +{$cust{$cust}->{location}}),"\n"; } ~/$ perl tmp.pl tmp.dat a: 12:10 12:13 : america australia b: 12:11 2:30 : bombay bhutan c: 12:12 : calcutta n: 3:40 : neterland
print "Good ",qw(night morning afternoon evening)[(localtime)[2]/6]," fellow monks."


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