Solving Problems With the One Definition Rule
Explore the One Definition Rule (ODR) in C++, which requires that entities be defined only once across translation units to prevent linking errors. Understand how to resolve ODR violations by using proper variable scoping, including static qualifiers, and how certain types like templates and inline functions can be safely repeated. Practice compiling and linking C++ projects in CMake while applying ODR principles to build reliable executables.
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Phil Karlton was right on point when he said the following:
"There are two hard things in computer science: cache invalidation and naming things."
Names are difficult for a few reasons: they have to be precise, simple, short, and expressive at the same time. That makes them meaningful and allows programmers to understand the concepts behind the raw implementation. C++ and many other languages impose one more requirement: many names must be unique.
This is manifested in a few different ways. A programmer is required to follow the