[rustc.git] / src / tools / clippy / src / docs / write_literal.txt

### What it does
This lint warns about the use of literals as `write!`/`writeln!` args.

### Why is this bad?
Using literals as `writeln!` args is inefficient
(c.f., https://github.com/matthiaskrgr/rust-str-bench) and unnecessary
(i.e., just put the literal in the format string)

### Example
```
writeln!(buf, "{}", "foo");
```

Use instead:
```
writeln!(buf, "foo");
```
Commit	Line	Data
f2b60f7d FG	1	### What it does
	2	This lint warns about the use of literals as `write!`/`writeln!` args.
	3
	4	### Why is this bad?
	5	Using literals as `writeln!` args is inefficient
	6	(c.f., https://github.com/matthiaskrgr/rust-str-bench) and unnecessary
	7	(i.e., just put the literal in the format string)
	8
f2b60f7d FG	9	### Example
	10	```
	11	writeln!(buf, "{}", "foo");
	12	```
	13
	14	Use instead:
	15	```
	16	writeln!(buf, "foo");
	17	```