Which Function Version Does the Compiler Pick?
What with function overloading, function templates, and function template overloading, C++ needs, and has, a well-defined strategy for deciding which function definition to use for a function call, particularly when there are multiple arguments. The process is called overload resolution. Detailing the complete strategy would take a small chapter, so let’s take just a broad look at how the process works:
• Phase 1— Assemble a list of candidate functions. These are functions and template functions that have the same names as the called functions.
• Phase 2— From the candidate functions, assemble a list of viable functions. These are functions with the correct number of arguments and for which there ...
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