Re: Use of the => operator

When we have a non quoted word before the operator => we only can guarantee that this word won't be interpreted as a sub even when this sub exists. This doesn't mean that a number will be turned into a string, so, this is also valid:

  %h = ( 1.000 => 'foo' ) ;
  
  print "value: $h{1}\n" ;
[download]

What make this valid:

  $h{2.000} = 'bar' ;
  
  print "value: $h{2}\n" ;
[download]

What have nothing to do with the operator =>.

Graciliano M. P.
"Creativity is the expression of the liberty".

Comment on Re: Use of the => operator Select or Download Code

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Re^2: Use of the => operator by roju (Friar) on Aug 10, 2004 at 15:16 UTC
From perlop: `The => digraph is mostly just a synonym for the comma operator. It's useful for documenting arguments that come in pairs. As of release 5.001, it also forces any word to the left of it to be interpreted as a string.` I'd call 01 a word, especially since `01 =~ /^\w+$/` will match. But yup, since perl defines Perl, 01 isn't a word ;)	[reply] [d/l] [select]
Re^3: Use of the => operator by Joost (Canon) on Aug 10, 2004 at 15:28 UTC
Hmmm, that looks to me like a documentation bug; IFAIK => quotes identifiers; barewords matching `/^[a-z_]\w$/` Note that in perl versions 5.6.0 - 5.8.0 single-number vstrings are an exception, ie. `v80 =>` means `"P",`. Perl 5.8.1 reverted this to meaning `"v80",` again. "What should it profit a man, if he should win a flame war, yet lose his cool?"*	[reply] [d/l] [select]
Re^3: Use of the => operator by gmpassos (Priest) on Aug 10, 2004 at 15:23 UTC
Maybe perlop need some updates! Graciliano M. P. "Creativity is the expression of the liberty".	[reply]


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