bjoernager/rust
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Use more slice patterns inside the compiler

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This commit is contained in:
León Orell Valerian Liehr 2024-08-07 12:41:49 +02:00
parent 60d146580c
commit c4c518d2d4
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40 changed files with 191 additions and 221 deletions
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10
compiler/rustc_errors/src/lib.rs
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@ -2024,11 +2024,11 @@ pub fn a_or_an(s: &str) -> &'static str {
///
/// Take a list ["a", "b", "c"] and output a display friendly version "a, b and c"
pub fn display_list_with_comma_and<T: std::fmt::Display>(v: &[T]) -> String {
match v.len() {
0 => "".to_string(),
1 => v[0].to_string(),
2 => format!("{} and {}", v[0], v[1]),
_ => format!("{}, {}", v[0], display_list_with_comma_and(&v[1..])),
match v {
[] => "".to_string(),
[a] => a.to_string(),
[a, b] => format!("{a} and {b}"),
[a, v @ ..] => format!("{a}, {}", display_list_with_comma_and(v)),
}
}