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All the Perl that's Practical to Extract and Report

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  • I have to say that I've seen the other examples of this and I think this is definitely the cleanest and easiest to understand. Using $^a, $^b and $^c with the arity checks definitely beats all those pops, shifts, etc.

  • I agree, though I think it might need a special-case for zero-arity so that could could write an arbitrary reduction:

        'sum' => { @stack = [+] @stack }, ...

    hmm, can that be written as assignment-operator?

        'sum' => { @stack [+]= () },

    • I was hoping to use zero arity like so:

      'pi' => { 3.1415926 }


      'sum' => { @stack = [+]@stack; } but WholeStack,

      or something along those lines would work.