C++ Game Development at Blizzard
CppCast
00:00
How to Implement a Transparent Comparator in C++
The article also made me think, because the day before I'd run into the same kind of problem that is looking up an item in a set where what you want to look up isn't the actual value type. And I had found, I thought to myself, there must be a way to do this. And I looked on Cp reference and indeed I found that set supports lookup with a transparent comparator. The other crucial thing is you need to define a type, a type def inside that that struct, just called "transparent" So you can say using is transparent equals int or whatever. That is a signal to the set, to the standard library that your operator is transparent.
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