C++ STL numeric - transform_reduce | Modern Cpp Series Ep. 185

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►Lesson Description: In this lesson we take a look at std::transform_reduce -- which combines what we have learned in transform and reduce operations. Again the advantage of this algorithm has to do with being able to potentially being able to transform and reduce the data in one step, as well as potentially do that step in parallel (as opposed to doing all transforms first, and then a second reduction step). This is a powerful algorithm that I have frequently observed in high performance computing and image processing. Two 'gotcha's' remain 1. make s sure the initial type matches your result (as this is determined at compile-time by the template parameter type) 2. Make sure the default value for the constructed type is what you want it, if you choose the overload that omits 'init'. Note that you may have also heard of this algorithm as 'map-reduce'.
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[@MyMjrox]

I like your C++ series. A request to make a series on C++ build system (CMake, Make, etc).

[@MikeShah]

Cheers -- that is a popular request I, I have an outline of lessons I could do, still thinking about it.

[@Chupe_chupe]

Thanks a lot for this great vídeo

[@MikeShah]

Cheers, you are most welcome!

[@pecdo1262]

This was a wonderful video, thank you very much :3

[@MikeShah]

Cheers!

[@imtootired4122]

Is there a reason you use "return v *= 2;" instead of just "return v * 2; " ?

[@MikeShah]

I believe return v*2 would be fine. Just have to be careful not to modify the actual element (which is not happening here) -- so 'return v*2' should be perfectly fine (and probably preferred!)