Re^2: strange map behavior


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Re^2: strange map behavior

by jeanluca (Deacon)

on Feb 25, 2008 at 19:24 UTC ( [id://670093]=note: print w/replies, xml )

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in reply to Re: strange map behavior
in thread strange map behavior

I tried to build a new hash out of an array with hashes, something like:

#! /usr/bin/perl -l
use strict;
use warnings ;

my @arr = ( {'a' => 'x', 'b' => 'y', 'c' => 'z'}, 
            {'a' => 'x1', 'b' => 'y1', 'c' => 'z1'} ) ;
my %h = map {;"$_->{'a'}_$_->{'c'}" => $_->{'b'} } @arr ;
print "$_ -- $h{$_}" foreach ( keys %h ) ;
[download]

Thnx
LuCa

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Re^3: strange map behavior by ikegami (Patriarch) on Feb 25, 2008 at 19:33 UTC
That makes more sense. But you might want to use `join` to increase readability. `my %h = map { join('_', $_->{'a'}, $_->{'c'}) => $_->{'b'} } @arr ;` [download]	[reply] [d/l] [select]

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