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    $\begingroup$ I think this is great work and will have great benefit for people who cares a lot about performance! Many times, I find it easier to write a C++ function and get better performance than to deal with all kinds of surprises in optimizing Mathematica code. I think it will be also more attractive to people, if you could add some examples about matrices and sparse array. $\endgroup$ Commented Feb 23, 2020 at 22:20
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    $\begingroup$ @xslittlegrass Thanks! I've added two examples of manipulating arrays. $\endgroup$ Commented Feb 24, 2020 at 21:46
  • $\begingroup$ When compiling "mylib = CreateLibrary[src, "wll_sparse_identity", "IncludeDirectories" -> {"<path-to-wll_interface.h>"}, Language -> "C++", "CompileOptions" -> "-std=c++17"]", I got this error message "CreateLibrary::cmperr: Compile error: C:\Temp\wll_interface.h(2012): error C2429: language feature 'structured bindings' requires compiler flag '/std:c++17'". Can you tell me why? Thanks. $\endgroup$ Commented Mar 22, 2024 at 20:13
  • $\begingroup$ @xpaul I guess you are using MSVC to compile the code--you can try specifying "CompileOptions" -> "/std:c++17". $\endgroup$ Commented Apr 11, 2024 at 3:47
  • $\begingroup$ Yes, I am using MSVC. I will try. Thank you very much! $\endgroup$ Commented Apr 11, 2024 at 21:16