For better or for worse, the overload (2024)

a year ago

The article discusses C++ overload resolution and implicit conversion sequences, focusing on qualification conversions.
It explains standard conversion sequences, including lvalue-to-rvalue, array-to-pointer, and function-to-pointer conversions.
The concept of cv-qualifiers (const and volatile) and their role in type conversions is detailed.
The article provides examples of qualification conversions and how they affect overload resolution.
It introduces the idea of cv-qualification signatures and how they determine the success of a conversion.
The post also touches on temporary materialization and its role in extending the lifetime of temporaries.
Overload resolution rules are summarized, including how to determine which conversion sequence is 'better'.
Examples are given to illustrate how overload resolution works in practice, including cases with function pointers and references.
The article concludes with a reflection on the complexity of C++'s overload resolution and implicit conversion mechanisms.

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