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All the Perl that's Practical to Extract and Report

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  • Some more variations for you to include in the mix...

    Params::Util::_INSTANCE has long done Scalar::Util::blessed($foo) and $foo->isa('bar'), I'd be interested to see how much overhead the extra function call adds.

    Also, try substituting UNIVERSAL::can($foo, 'can') for blessed($foo)
    • So you want a fully qualified call to blessed instead of my importing it? Or did you miss that I had called blessed? UNIVERSAL::can('isa') is interestesting, but I'm sure that won't be much faster. I've added both of those (the fully qualified Scalar::Util::blessed() is called 'fqblessed', of course).

      Benchmark: timing 200000 iterations of blessed, can, eval, fqblessed, stringify, universal, unpack...
         blessed:  1 wallclock secs ( 0.86 usr +  0.00 sys =  0.86 CPU) @ 232558.14/s