mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-21 07:01:54 +00:00
27 lines
781 B
Rust
27 lines
781 B
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#[deny(cmp_owned)]
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#[allow(unnecessary_operation)]
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fn main() {
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fn with_to_string(x : &str) {
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x != "foo".to_string();
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//~^ ERROR this creates an owned instance just for comparison. Consider using `x != "foo"` to compare without allocation
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"foo".to_string() != x;
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//~^ ERROR this creates an owned instance just for comparison. Consider using `"foo" != x` to compare without allocation
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}
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let x = "oh";
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with_to_string(x);
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x != "foo".to_owned(); //~ERROR this creates an owned instance
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// removed String::from_str(..), as it has finally been removed in 1.4.0
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// as of 2015-08-14
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x != String::from("foo"); //~ERROR this creates an owned instance
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42.to_string() == "42";
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}
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