Re: Table of Perl 5 Operators

He! Nice colection. Now, anybody up to DRAW the table? :)

Michael G Schwern wrote:
> You've seen Mark Lentczner's Periodic Table of Perl 6 Operators
> http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html
> 
> What about one for Perl 5?
> 
> Using perlop, opcode.pl and Mark's table I've done step one: drawn up a
> complete list of Perl 5 operators.  All 129 of them [1] in no particular
> order.
> http://www.pobox.com/~schwern/tmp/perl5ops
> 
> I've followed Mark's lead as to what is and is not an op.  The -X filetest
> operators, despite being in perlfunc, are ops.  "scalar" is listed to
> match up with Mark's Contextegens.  "ref", "exists", "delete", etc...
> are listed to match up with the Textaveries.  "sub" is not an op, that's
> syntax... I guess.  I've asked Mark what his system was for deciding what
> is an what is not an op but it seems fairly sensible to me.
> 
> So... did I miss anything?
> 
> The big step is to work out operator precedence.  perlop has a 24 level
> precedence table but I suspect that's perhaps the biggest white lie in all
> the Perl docs.  Can Perl 5 even be said to have a simple enough idea of
> op precedence to apply a number to each op?  If so, how does one go about
> figuring this out?
> 
> 
> [1] Mark's table shows 180 ops, but its a year out of date.  If we remove
> the bitwise operators we get 153 for Perl 6 and 123 for Perl 5 and things
> start to look more sane.
> 

-- 
Alberto Simões - Departamento de Informática - Universidade do Minho
                  Campus de Gualtar - 4710-057 Braga - Portugal