@maegul@lemmy.ml Yeah if you wanted to modify the original variable you would need to make it mutable, and use &mut references to it all the way down. By changing the function parameter to be mutable, we’re not modifying anything outside of this function: we’re just allowing ourselves to re-use the parameter to hold different values while the function is running. I don’t particularly like doing that - I’d prefer to make a new local variable if I want to change things within the function, but I think the exercise might have said I wasn’t allowed to make new variables :-)

@maegul@lemmy.ml using sort looks like a nice solution. For very large lists it will be doing more work than is strictly necessary, but for most use cases that would be great, and nice and simple.

@maegul@lemmy.ml This sounds fantastic. I am a very light Lemmy user at the moment, but will try to keep up. I definitely welcome comments and help to improve the series!