35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(useless_format)]
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fn main() {
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format!("foo"); //~ERROR useless use of `format!`
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format!("{}", "foo"); //~ERROR useless use of `format!`
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format!("{:?}", "foo"); // we only want to warn about `{}`
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format!("{:+}", "foo"); // we only want to warn about `{}`
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format!("foo {}", "bar");
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format!("{} bar", "foo");
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let arg: String = "".to_owned();
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format!("{}", arg); //~ERROR useless use of `format!`
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format!("{:?}", arg); // we only want to warn about `{}`
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format!("{:+}", arg); // we only want to warn about `{}`
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format!("foo {}", arg);
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format!("{} bar", arg);
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// we don’t want to warn for non-string args, see #697
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format!("{}", 42);
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format!("{:?}", 42);
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format!("{:+}", 42);
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format!("foo {}", 42);
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format!("{} bar", 42);
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// we only want to warn about `format!` itself
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println!("foo");
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println!("{}", "foo");
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println!("foo {}", "foo");
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println!("{}", 42);
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println!("foo {}", 42);
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}
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