mirror of https://github.com/rust-lang/rust
52 lines
2.1 KiB
Rust
52 lines
2.1 KiB
Rust
//@ check-pass
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//@ run-rustfix
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fn main() {
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let mut _x: usize;
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_x = 1;
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println!("_x is {_x}", _x = 5);
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//~^ WARNING named argument `_x` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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println!("_x is {y}", y = _x);
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//~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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println!("first positional arg {}, second positional arg {}, _x is {y}", 1, 2, y = _x);
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//~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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let mut _x: usize;
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_x = 1;
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let _f = format!("_x is {_x}", _x = 5);
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//~^ WARNING named argument `_x` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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let _f = format!("_x is {y}", y = _x);
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//~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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let _f = format!("first positional arg {}, second positional arg {}, _x is {y}", 1, 2, y = _x);
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//~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
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//~| HELP use the named argument by name to avoid ambiguity
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let s = "0.009";
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// Confirm that named arguments used in formatting are correctly considered.
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println!(".{:0<width$}", s, width = _x);
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let region = "abc";
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let width = 8;
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let ls = "abcde";
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let full = "abcde";
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// Confirm that named arguments used in formatting are correctly considered.
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println!(
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"| {r:rw$?} | {ui:4?} | {v}",
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r = region,
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rw = width,
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ui = ls,
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v = full,
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);
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// Confirm that named arguments used in formatting are correctly considered.
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println!("{:.a$}", "aaaaaaaaaaaaaaaaaa", a = 4);
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// Confirm that named arguments used in formatting are correctly considered.
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println!("{:._a$}", "aaaaaaaaaaaaaaaaaa", _a = 4);
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}
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