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I decided to use std::views stuff because of their bound-safety and readability. It looks like std::views::take_while invokes too many function calls and recomputes the same thing over and over again. This looks like a performance nightmare to me.

I thought the new std::views::cache_latest would be a solution, but testing my code with GCC (trunk) and Clang (trunk) showed otherwise.

In the following, std::views::take_while() invokes its lambda 68 times!

本文标签： cWhy does stdviewstakewhile() do so many function invocations (even with cachelatest)Stack Overflow

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