Hi Chris,

my understanding is that Emmanouil wants to do something like:


nv_mynvo lnv_out
lnv_out = lnv_in1 + lnv_in2;


In this case the "+" is overloaded because you redefine the way it works for user-defined types only (objects, structures), except built-in types. C++ for example provides a special “operator” function that can be defined inside your custom class. PB does not have such feature, it supports inclusional polymorphism, but not operational polymorphism via Interfaces as in C# and Java.


My earlier suggestion was to implement some (global) uf_do_operation as workaround.

Best,

.m

Hi Emmanouil;

     Yes you can but its not intuitive. In PB it would be implemented via "Operational Polymorphism" vs "Inclusional Polymorphism". This was well covered in the old BOOA Course (Building Object Oriented Applications). However, Sybase killed that course (unfortunately). It was (and still is IMHO) a learning necessity if you really want to build proper OO App's in PB and more importantly a business framework for your PB Apps.

Regards ... Chris

Hello Emmanouil, 

nope, it doesn't.

In one project I worked around using overloaded functions and replacing the usual +, /, OR, NOT etc with the function calls.

Best,

.m