Adopt let else in more places

2022-02-19 00:48:49 +01:00
parent b8c56fa8c3
commit 2ef8af6619
132 changed files with 539 additions and 881 deletions
--- a/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs
+++ b/compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs
@@ -26,9 +26,8 @@ pub fn expand_deriving_partial_eq(
        base: bool,
    ) -> P<Expr> {
        let op = |cx: &mut ExtCtxt<'_>, span: Span, self_f: P<Expr>, other_fs: &[P<Expr>]| {
-            let other_f = match other_fs {
-                [o_f] => o_f,
-                _ => cx.span_bug(span, "not exactly 2 arguments in `derive(PartialEq)`"),
+            let [other_f] = other_fs else {
+                cx.span_bug(span, "not exactly 2 arguments in `derive(PartialEq)`");
            };

            cx.expr_binary(span, op, self_f, other_f.clone())