On Jan 27, 2009, at 12:29 PM, Jon Lang wrote:
So "$a -<=> $b" is equivalent to "$b <=> $a", not "-($a <=> $b)". OK.
I'd suggest choosing a better character for the meta-operator (one
that conveys the meaning of reversal of order rather than opposite
value); but I don't think that there is one.
There are two I can think of:
~ is used in regex to mean inversion of order as in:
'(' ~ ')' <stuffInTheMiddle>
which is the same as
'(' <stuffInTheMiddle> ')'
Though, of course, ~ is the prefix a number of hardwired operators,
and they all pertain to strings, so this might be awkward.
^ is used to mean 'compliment' and is the prefix to only six operators
(where it means exclusive of start point: ^.. ^..^ ^ff ^ff^ ^fff and
^fff^)
So, I could easily see:
~cmp
~<=>
~leg
Or,
^cmp
^<=>
^leg
If you REALLY want to get creative, you just spell these operators
backwards:
pmc
>=<
gel
Okay.. forget I said that....
- MtnViewMark
