[erlang-questions] some language changes
Mon Jun 4 22:15:31 CEST 2007
my two cents....
Robert Virding wrote:
> But then WHAT'S THE POINT? Sorry for shouting. If you have to create a
> special syntax to show that you are updating a varible and not matching
> it haven't you lost any syntactic benefit you may have gained by be able
> to reuse variable names.
I completely agree!
When I approached Erlang, I was quite disapponted that I couldn't
overwrite a variable. My "imperative language" basis required that I
could always write "A = A + 1" in any language.
But when I fully understood the power of Erlang matching, I said "well,
it was the only way to keep the strong power of matching, which is the
key aspect of Erlang... so let's write 'A1=A+1'".
> The only clean way to do that would be to introduce proper variable
> scoping, but that is a big change, both syntax and semantics.
...uhmmmm.... but how can you do "A = A + 1" using variable scoping??
Maybe introducing a syntax which is more and more hard than "A1 = A + 1"?
IMHO, I don't think that it could be the case...
All the best,
Eng. Corrado Santoro, Ph.D.
University of Catania - ITALY - Engineering Faculty
Tel: +39 095 7382380 VoIP: sip:
Personal Home Page: http://www.diit.unict.it/users/csanto
NUXI Home Page: http://nuxi.diit.unict.it
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