Another question about the to-be-released FOREACH macro, which I find
I am using heavily... (BTW - Thanks Eric for your quick responses, and
for the cool macro!)
The issue is declaring the 'loop variable' for maps. For example,
vector<int> v;
...
FOREACH (int a, v) { ... } // this compiles
int b;
FOREACH (b, v) {...} // this also compiles
However, for maps, the second variation (declaring outside the macro)
doesn't work:
map m;
...
FOREACH (map::value_type i, m) {...} // compiles
map::value_type i;
FOREACH (i, m) {...} // COMPILE ERROR
Specifically, the compiler says
error: non-static const member
` const int std::pair::first',
can't use default assignment operator
(from GCC 3.3.1). Despite my best efforts, I can't figure out what
this error means, or what it's talking about. Anybody else run into
this? Any thoughts?
----------------------------------------------------------------------
Dave Steffen, Ph.D. "The only justification for our concepts and
Software Engineer IV systems of concepts is that they serve to
Numerica Corporation represent the complex of our experiences;
ph (970) 419-8343 x27 beyond this they have no legitimacy."
fax (970) 223-6797 -- Albert Einstein
dgsteffen@numerica.us
