Lazy Value - Video

Close your eyes and imagine some of your most complex code. In that code, you likely calculate a lot of values. But for some code paths, they might not even be needed. It is, however, too difficult to untangle the code. So, the values are really only calculated when needed, and only so one time. In this video, I discuss a class I've implemented to tackle that exact problem.

Ivan Čukić's book covers lazy value on page 122: https://www.amazon.com/Functional-Programming-programs-functional-techniques/dp/1617293814

Details on class template argument deduction: https://en.cppreference.com/w/cpp/language/class_template_argument_deduction

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/LazyValue

All Qt Widgets and more videos:
https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI