Re: A novel way to subvert the C++ type system...
ootiib@hot.ee (?? Tiib) wrote (abridged):
static const char token[] = "....";
enum { TokenLen = sizeof(token) -1 };
....
what's wrong with:
const size_t tokenLen = sizeof(...;
You perhaps wanted to ask "what is different".
Enumerator is integral constant so can be used like template
argument or case label and its value can be checked
statically compile time. Nothing of it can be done with variable.
This compiles:
int test( int x ) {
static const char token[] = "....";
const int tokenLen = sizeof(token)-1;
switch (x) {
case tokenLen: return 1;
default: return 2;
}
}
with Comeau (tested with http://www.comeaucomputing.com/tryitout/ - you
can copy and paste the code from this post). I believe Comeau is correct
here, and you are mistaken.
(Comeau warns about token being defined and not used. It's trivial to
rewrite to avoid the warning.)
-- Dave Harris, Nottingham, UK.
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