clarification on single assignment
Wed Nov 22 11:05:06 CET 2000
Ulf Wiger <> wrote:
> I read a paper on SAC (Single Assignment C):
> Thus, we can reuse variable names in a function and lose nothing.
But Erlang doesn't even have assignment in the first place! '=' means
match, which binds unbound variables. For example,
A = 1,
A = 2 % badmatch, or reassign?
match is of course more powerful than assignment.
So, you'd need to introduce an assignment operator. The compiler
could translate it into a match, and also generate a new variable name
A := 1,
A := 2
A_0 = 1,
A_1 = 2
Join the Non-Assignment Generation!
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