5 replies to this topic

[jaiii]

Hi,
how can I write new operator

for example:

bool operator G (int i,j){return i>j};

thankx

[abzero]

you can't create new operators, you can only redifine existing ones, and then only with atleast one user-defined type as the parameters.

[jaiii]

Category

Operators, C++-Specific Keywords

Syntax

operator <operator symbol>( <parameters> )

{
<statements>;

}

<operator symbol> Don't be 'G' ?

This from help BCB 6.0

[abzero]

again, you can't create new operators. You can only overload the ones you already have (and not all of them). If you could create new operators, then the compiler would need to have a very dynamic operator table, which C++ doesn't have (you define any operator you like in Prolog, and probably some other languages.)

See Operators in C and C++ - Wikipedia, the free encyclopedia

[dargueta]

You can create class methods to do what you want. For example:

class A {
 public:
  size_t value;

  bool G (const A& rhs) const {
    return value > rhs.value;
  }
};

Instead of doing something like this:
lhs G rhs;

You can do this:
lhs.G(rhs);

Edited by dargueta, 29 June 2010 - 09:18 PM.
Fixed syntax violation

[jaiii]

Thank I try it.