I'm sorry, I didn't qualify my statement well. I did mean in release situations when optimizations are enabled. But I'm not sure whether such optimizations are

I'm sorry, I didn't qualify my statement well. I did mean in release situations when optimizations are enabled. But I'm not sure whether such optimizations are appropriate in debug builds. I suspect there may be cases where that would interfere with debugging. I know one shouldn't necessarily assume certain optimizations will occur, but after all the point of optimizations is to improve generated code while retaining functionality, and the article was stating that the moves will be an issue, which isn't always true (especially not in typical scenarios of using --release code). However for completeness, below is the article's example, where you can see it inlines pretty much everything as you'd expect. But even if you make it so it won't inline functions (e.g. add println to them) it still optimizes the moves away, which is good. https://rust.godbolt.org/z/3s1KcPa7d https://rust.godbolt.org/z/3s1KcPa7d