my $coderef = \&hiya; is far more conventional, but both are ok for subroutines.

Neither will work for operators such as gmtime and localtime, though.

Since 5.16: 

my $time_zone_func =
   $file =~ /^London/
      ? \&CORE::gmtime
      : \&CORE::localtime;

strftime($date_format, $time_zone_func->(time))

[download]

Backwards compatible: 

my $time_zone_func =
   $file =~ /^London/
      ? sub { gmtime($_[0]) }
      : sub { localtime($_[0]) };

strftime($date_format, $time_zone_func->(time))

[download]
or 
my $time_zone_func = sub {
   $file =~ /^London/
      ? gmtime($_[0])
      : localtime($_[0])
};

strftime($date_format, $time_zone_func->(time))

[download]

In reply to Re^2: Variable behaving as a function call by ikegami
in thread Variable behaving as a function call by dirtdog

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