• bioinfornatics (17/17) Aug 20 2012 I got a little problem with these code:
• David (5/22) Aug 20 2012 Should work with alias,
• Timon Gehr (2/19) Aug 20 2012 Alias parameters. auto div(alias a, alias b)().
• bioinfornatics (7/7) Aug 20 2012 Thanks to Timon Gehr and David=20

bioinfornatics <bioinfornatics fedoraproject.org> writes:

I got a little problem with these code:

____________________
double div(T a, U b)() if( a > 0 && b > 0 ){ // not works T and U unknwn
identifier
    return a / b;
}
double div(T,U)(T a, U b) if( a > 0 && b > 0 ){ // not works, a  and b
not known at compile time
    return a / b;
}

double div(double a, double b)() if( a > 0 && b > 0 ){ // works but not
generic
    return a / b;
}
_____________________


The only one who works is a not generic! they are a way? or i need to
write for each parameter type?

David <d dav1d.de> writes:

Am 20.08.2012 23:52, schrieb bioinfornatics:
 I got a little problem with these code:

 ____________________
 double div(T a, U b)() if( a > 0 && b > 0 ){ // not works T and U unknwn
 identifier
      return a / b;
 }
 double div(T,U)(T a, U b) if( a > 0 && b > 0 ){ // not works, a  and b
 not known at compile time
      return a / b;
 }

 double div(double a, double b)() if( a > 0 && b > 0 ){ // works but not
 generic
      return a / b;
 }
 _____________________


 The only one who works is a not generic! they are a way? or i need to
 write for each parameter type?

Should work with alias,

double div(alias a, alias b)() if( a > 0 && b > 0 ){
     return a / b;
}

Timon Gehr <timon.gehr gmx.ch> writes:

On 08/20/2012 11:52 PM, bioinfornatics wrote:
 I got a little problem with these code:

 ____________________
 double div(T a, U b)() if( a > 0 && b > 0 ){ // not works T and U unknwn
 identifier
      return a / b;
 }
 double div(T,U)(T a, U b) if( a > 0 && b > 0 ){ // not works, a  and b
 not known at compile time
      return a / b;
 }

 double div(double a, double b)() if( a > 0 && b > 0 ){ // works but not
 generic
      return a / b;
 }
 _____________________


 The only one who works is a not generic! they are a way? or i need to
 write for each parameter type?

Alias parameters. auto div(alias a, alias b)().

bioinfornatics <bioinfornatics fedoraproject.org> writes:

Thanks to Timon Gehr and David=20
____
double div(alias a, alias b)() if( a > 0 && b > 0 ){
     return a / b;
}
____

works as expected :-)