Hi!
Is there any possibility to discuss operators from apocalypse 3?
Here goes my thoughts:
1) ?: operator is very common to C programmers and should not be
changed to ??::. I agree that the ':' can be usefull out there,
but, if we change ?: to ()?: or ()?():()... I think this would
be better...
2) using ^ for mapping operators.. this only works with two lists.
The problem here is that we have a pair of lists, and want a
list of pairs. There can be other situations where we have
three lists, instead of a list of tripplets... I thought it was
better to have a 'evidence' or 'factorize' for lists in a way
((a,b,c),(1,2,3)) will become ((a,1),(b,2),(c,3)) and
((1,2,3),(4,5,6),(7,8,9)) will become ((1,4,7),(2,5,8),(3,6,9)).
This way, the ^ operator could be replaced with a simple map...
More generic, less operators confusion... better? maybe...
3) Last, operator:+ and operator:* functions should receive two
or more operands, or, implement a funcion like 'reduce' that
with a binary operator, a neutral element and a list, reduces
the list:
sum(@a) should be reduce(operator:+,0,@a)
mul(@a) should be reduce(operator:*,1,@a)
Of course, this can be usefull for many other thing... think
in list concatenation:
concat(\@a,\@b,\@c) can be: reduce(\&concat,[],\@a,\@b,\@c)...
Can this be usefull? I think, it could...
Only my 5 cents...
Cheers ;)
Alberto
--
| Alberto Manuel Brand�o Sim�es |
| [EMAIL PROTECTED] |
| http://numexp.sourceforge.net |
