Running this code: 
use Benchmark qw(cmpthese);
cmpthese(10000000, {
  single => sub {$foo = 'http://www.yoursite.com'},
  double => sub {$foo = "http://www.yoursite.com"},
});

[download]
produces these results on my machine: 
            Rate double single
double 2865330/s     --    -2%
single 2915452/s     2%     --

[download]
So it looks like single quotes may be slightly faster, but that may be within the margin of error. I generally use single quotes unless I need interpolation of variables, but it's probably just a matter of preference.

-- Mike

--
just,my${.02}

In reply to Re: Re: Re: Some suggestions on coding style - a chance to critique by thelenm
in thread Some suggestions on coding style - a chance to critique by emilford

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