mirror of
https://github.com/rust-lang/rust-clippy
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44 lines
1.1 KiB
Rust
44 lines
1.1 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(clippy)]
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#![allow(unused_assignments)]
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struct Foo(u32);
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fn main() {
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let mut a = 42;
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let mut b = 1337;
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a = b;
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b = a;
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//~^^ ERROR this looks like you are trying to swap `a` and `b`
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//~| HELP try
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//~| SUGGESTION std::mem::swap(&mut a, &mut b);
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//~| NOTE or maybe you should use `std::mem::replace`?
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let t = a;
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a = b;
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b = t;
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//~^^^ ERROR this looks like you are swapping `a` and `b` manually
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//~| HELP try
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//~| SUGGESTION std::mem::swap(&mut a, &mut b);
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//~| NOTE or maybe you should use `std::mem::replace`?
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let mut c = Foo(42);
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c.0 = a;
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a = c.0;
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//~^^ ERROR this looks like you are trying to swap `c.0` and `a`
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//~| HELP try
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//~| SUGGESTION std::mem::swap(&mut c.0, &mut a);
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//~| NOTE or maybe you should use `std::mem::replace`?
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let t = c.0;
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c.0 = a;
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a = t;
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//~^^^ ERROR this looks like you are swapping `c.0` and `a` manually
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//~| HELP try
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//~| SUGGESTION std::mem::swap(&mut c.0, &mut a);
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//~| NOTE or maybe you should use `std::mem::replace`?
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}
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