Premise: I am trying to make a Define scope that is not implemented using a macro because of the potential issues with macros. Here is my initial attempt
//version for if not defined
bool Defined()
{
return false
}
//version for if defined
bool Defined(bool anything)
{
return true;
}
And an example use case
if(Defined(_DEBUG))
{
Stuff...
}
which would replace
#ifdef _DEBUG
Stuff...
#endif
or
#define Defined() false
#define Defined(Anything) true
Benefits:
syntax is cleaner, it is scoped,
This code is not conditional, so the compiler will be able to easily optimize code sections out.
Issues
There are a few issues with this procedure, the first is the reason for this post.
Question:
You can't pass in anything that is not implicitly cast-able to a bool. Is there a way to implicitly cast any object, number, pointer, etc to a bool? I don't believe there is, but I wanted to make sure, before I continued.
You can use a generic template:
template<class T>
bool Defined(T &&) { return true; }
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