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A comment on What Rust Can Do That Other Languages Can't. Parent comment

Re:What Rust Can Do That Other Languages Can't by erikdesjardins on Monday February 06, 2017 @09:33AM (#13579698)
The original example does not return a mutable reference; in Rust you must explicitly opt in to mutability. Compare [1] and [2].

[1]: https://play.rust-lang.org/?gist=78e7af18c6fc7d37d9df96be63a...

[2]: https://play.rust-lang.org/?gist=2072a18b674685f20c9d1504a88...

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Re:What Rust Can Do That Other Languages Can't by blub on Monday February 06, 2017 @10:48AM (#13580489)
Oh ok, my bad.

Then the C++ translation above should probably be a const& in C++, which is acceptable. The returned reference could in that case be stored, but it's risky and a bad practice.

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