Oliver Jowett wrote:
Tom Lane wrote:
On a related note, it would also be nice to have default
parameters and some way to say to use them.
That is fundamentally not ever going to happen, because it blows
overloaded-function resolution out of the water: there is no way to
choose whether "foo(42, 2.5)" matches foo(int, float) or
foo(int, float, something-with-a-default). Let's try to limit our
attention to something that might actually work.
C++ manages to solve this problem, although I can't remember the exact
mechanics (and C++ is usually not a good example to follow anyway ;)
Your're wrong:
try to compile this:
void foo( int a, float b ) { }
void foo( int a, float b, int c=0 ) { }
int main(char argc, char **argv)
{
foo( 42, 2.5 );
return 0;
}
you'll get:
a.cpp:6: error: call of overloaded `foo(int, double)' is ambiguous
a.cpp:1: error: candidates are: void foo(int, float)
a.cpp:2: error: void foo(int, float, int)
usualy C++ is not a good example as SQL is not :-)
Regards
Gaetano Mendola
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