method interpolation

[Uri Guttman]

>>>>> "PM" == Paul Makepeace <london.pm.org at paulm.com> writes:

  PM> Je 2006-02-01 13:24:38 +0000, Iain Tatch skribis:
  >> On 01/02/06, Dirk Koopman <djk at tobit.co.uk> wrote:
  >> 
  >> > My brain is failing me. Is there some incantation (probably including
  >> > {}) that allows one to do something like:
  >> >
  >> > print "This is $syiq->UNIQID";
  >> 
  >> warn "Ugly code follows:";
  >> print "This is ${\( $syiq->UNIQID )}\n";

  PM> The "canonical" way which is basically the same but with a list
  PM> context is,

  PM>   print "This is @{[ $sys->UNIQ_ID ]}";

actually they are both in list context. this is a known bug (or
undocumented feature) and has been known for a good long while.

#!/usr/local/bin/perl

sub context {

	return wantarray ? 'LIST' : 'SCALAR' ;
}

print "array is @{[context()]} context\n" ;
print "scalar is ${\context()} context\n" ;

array is LIST context
scalar is LIST context

same output for all of these:

This is perl, v5.8.6 built for sun4-solaris
This is perl, v5.6.1 built for sun4-solaris
This is perl, version 5.004_04 built for sun4-solaris

uri

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