Assignment to immutable argument: diagnostic tweak#47261
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bors merged 2 commits intorust-lang:masterfrom Jan 14, 2018
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Assignment to immutable argument: diagnostic tweak#47261bors merged 2 commits intorust-lang:masterfrom
bors merged 2 commits intorust-lang:masterfrom
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| 14 | _x = 4; | ||
| | ^^^^^^ cannot assign twice to immutable variable | ||
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| error[E0384]: cannot assign twice to immutable variable `_x` (Mir) |
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Shouldn't this message say "argument" instead of "variable" as well?
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| } | ||
| } else { | ||
| false | ||
| }; |
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So
much
vertical
space.
Now every time I see stuff like this I'm rewording it with is expressions in my head.
let is_arg = place is Place::Local(local) && self.mir.local_kind(*local) is LocalKind::Arg;
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@petrochenkov To be fair this is just:
let is_arg = match place {
Place::Local(local) => self.mir.local_kind(*local) == LocalKind::Arg,
_ => false
};I think if let is overused and match is better in many cases.
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True, I usually revert to using match in cases like this. Somehow it escaped me here ^_^
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Assignment to immutable argument: diagnostic tweak Re #46659.
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☀️ Test successful - status-appveyor, status-travis |
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Re #46659.