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14 lines
279 B
Rust
14 lines
279 B
Rust
// edition:2018
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pub async fn f(x: Option<usize>) {
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x.take();
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//~^ ERROR cannot borrow `x` as mutable, as it is not declared as mutable [E0596]
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}
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pub async fn g(x: usize) {
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x += 1;
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//~^ ERROR cannot assign twice to immutable variable `x` [E0384]
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}
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fn main() {}
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