On Monday, 9 April 2012 at 09:09:05 UTC, James Miller wrote:
* Eyyub <eyyub.pangeara...@gmail.com> [2012-04-09 01:14:32
+0200]:
Hello,
How can I rewrite the exemple 2 (http://pastebin.com/q50903Zh)
in D
lang. ?
This source code doesn't work...why ?
http://paste.pocoo.org/show/wy1kDIpqTi2ApRuOxRRb/
Thx. :)
What you want is something like this:
class Value(int M, int K, int S)
{
private
{
float _value;
}
public
{
this(float val)
{
_value = val;
}
auto opBinary(string op : "/", int MO, int KO, int
SO)(Value(MO, KO, SO) other) {
return new Value!(M-MO, K-KO,
S-SO)(_value/other.value);
}
}
}
A Few notes:
1. This isn't tested, might not work, but thats where you
should aim...
2. Operator overloading is implemented as a lowering (as far as
I'm aware) the
compiler emits a template instantiation of opBinary("/") for
the type. That
means that you can add on more template arguments.
3. Using `auto` means that the compiler works out the type, so
you don't have
to add extra template arguments to calculate the correct
type.
Hope that helps.
--
James Miller
Ho, yeah it works !!! :D :D
http://paste.pocoo.org/show/ye7VXQHfLxsVM38bKyS6/
Thanks a lot !
