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by drabbiticus
52 days ago
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Can someone help confirm whether I understand correctly the semantics difference between the final-line eval of x^
vs. x*
?It seems like either one evaluates the contents of the `box`, and would only make a difference if you tried to use `x` afterwards? Essentially if you final-line eval `x^` and then decide you want to continue that snippet, you can't use `x` anymore because it's been moved. Awkwardly, it also hasn't been assigned so I'm not sure the box is accessible anymore? |
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More or less. x^ moves the whole box whereas x* copies the contents of the box.
> Awkwardly, it also hasn't been assigned so I'm not sure the box is accessible anymore?
Yes, if you move something and don't assign it then it gets dropped, same as rust.