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		Matumio on Dec 19, 2021 \| parent \| context \| favorite \| on: Thread Safety in C++ and Rust This was my biggest misconception when learning Rust. I was thinking "&mut" can modify data, so "&" cannot. Wrong. The "mut" keyword is not the opposite of "const" from C++. It's declaring that you have exclusive (unique) ownership at this moment.

afiori on Dec 19, 2021 [–]

to be pedantic &mut is still a borrow not ownership, as another simplification the difference is that &mut can modify a value but must keep the borrowed value in a valid state, while full ownership can destroy a value

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