Is it possible to see performant string processing without sacrificing ease of use in Julia one day?

[Elrod]

@Palli

[@Elrod mentioned recently a vector implementation in C++ (from LLVM), with that same idea, 3x faster than Julia Vector (or std:vector). It doesn’t seem like there’s any real reason it can’t be done in Julia, and while indexing is different, simpler, a lot is similar, and maybe part of the code could be shared for arrays and strings.]

This is something easy enough to implement at the package level in C++ (aside from the fact distributing and installing packages in C++ isn’t easy), but would need compiler support in Julia to be performant.
That said, there are PRs like: Move small arrays to the stack by pchintalapudi · Pull Request #43573 · JuliaLang/julia · GitHub
which would help a ton of existing code, especially once the Julia compiler starts making use of escape analysis.
Immutable arrays will help there as well.