array.map is not inline, it consumes the array and returns another https://doc.rust-lang.org/std/primitive.array.html#method.map https://doc.rust-lang.org/std/p

array.map is not inline, it consumes the array and returns another https://doc.rust-lang.org/std/primitive.array.html#method.map https://doc.rust-lang.org/std/primitive.array.html#method.ma... But yes in the end this is all done in the stack We could have an inline version of map (for arrays and Vec) if we had a way to assert that two types have the same size. This means we can reuse the buffer because all elements will fit.