C++ comparing bunch of values with a given one

Question

I need to compare one given value with a retrieved values. I do this several times in the code. I am not satisfied with how it looks and I am seeking for a some sort of an util

Answer 1

It depends on the source of the retrieved values, if you're reading in from a file or stream then you'd do something different but if your source is a series of functions then the following is a different way to do it, not perfect but may suit your needs:

const int count = 3;
std::string value = "world";
boost::function funcArray[count];
funcArray[0] = &getValue1;
funcArray[1] = &getValue2;
funcArray[2] = &getValue3;

for( int i = 0; i < count; ++i )
{
    if( funcArray[i]() == value )
        return 1;
}

If you know which functions are the source (as well as the count of objects) I expect you could assemble the function pointer array using the preprocessor.