One of my all-time favorite C++ talks is Ben Deane’s Using Types Effectively from CppCon 2016. I like it for a lot of reasons, but for the purposes of this post - I really like the game Ben plays (starting at around the 29m mark) where he gives a function signature of a total function template - ...
… in C++. That seems like a fundamentally wrong statement to make right? C++ has been greatly improving over the last few standards in its direct support for a more functional style of programming. But it’s still much more verbose than necessary to write a simple lambda, it’s surprisingly tricky...
Before C++17, template deduction [basically] worked in two situations: deduction function parameters in function templates and deducing auto for variables/return types in functions. There was no mechanism to deduce template parameters in class templates. The result of that was— whenever you used...
optional<T&> - Yes, we need itRead it on Medium.
Read it on Medium.
Read it on Medium.
Read it on Medium.
Read it on Medium.
C++17 gave us std::optional which is, in the words of a friend of mine, one of those really simple, ultra complex types — in the sense that it’s very easy to understand and use properly, even for relatively inexperienced programmers… but extremely difficult to implement correctly, even for expert...
Read it on Medium.