Random question: Why do I often see variables like x_, y_, i_, j_, etc.? I'm mostly noticing these in code examples from C++ FAQ Lite, but I know I've seen it elsewhere. Does the trailing underscores ...
In this tip, I'd like to show a simple technique that allows switching between multiple versions of the code at runtime. Often, when I'm testing a new solution, I'd like to run an old version and make ...
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