On 19.04.2012 23:14, Xan wrote:
Hi, I read http://dlang.org/operatoroverloading.html but in my code it
does not work. I tried to overload '*' binary operator in my class
Algorisme:
[...]
class Algorisme(U,V) {
string nom;
uint versio;
alias V function (U) Funcio;
Funcio funcio;
this(string nom, uint versio, Funcio funcio) {
try {
this.nom = nom;
this.versio = versio;
this.funcio = funcio;
}
catch {
writeln("Error");
}
}
string toString() {
return format("%s (versió %s): %s -> %s", nom, versio, typeid(U),
typeid(V));
}
Algorisme(U, V) opBinary(string op) (Algorisme(U, V) alg) {
Algorisme! opBinary(string op) (Algorisme alg) {
or
Algorisme!(U,V) opBinary(string op) (Algorisme!(U,V) alg) {
should do it
static if (op == '*') return new Algorisme("composició",
or:
static if (op == '*') return new Algorisme!(U,v)("composició",
same here. There is no need to put !(params) explicitly if it's the same
as the template you are writing.
this.versio+alg.versio, this.funcio);
}
}
[...]
but I receive these errors:
$ gdmd-4.6 algorisme.d
algorisme.d:31: function declaration without return type. (Note that
constructors are always named 'this')
algorisme.d:31: no identifier for declarator Algorisme(U, V)
algorisme.d:31: semicolon expected following function declaration
algorisme.d:31: function declaration without return type. (Note that
constructors are always named 'this')
algorisme.d:31: function declaration without return type. (Note that
constructors are always named 'this')
algorisme.d:31: found 'alg' when expecting ')'
algorisme.d:31: no identifier for declarator opBinary(Algorisme(U, V))
algorisme.d:31: semicolon expected following function declaration
algorisme.d:31: Declaration expected, not ')'
algorisme.d:35: unrecognized declaration
Why it fails?
Anyone could help me?
Thanks,
Xan.
--
Dmitry Olshansky
