book: modify FnKind::Fn matching (#14780)

flip1995 · web-flow · commit 74fd9edc49ad · 2025-05-12T08:42:41.000Z
This PR update the sample code in the development guide because `ident` was moved to the struct `Fn` in rust-lang/rust#138740 . changelog: none
diff --git a/book/src/development/adding_lints.md b/book/src/development/adding_lints.md
@@ -416,7 +416,7 @@ In our example, `is_foo_fn` looks like:
 
 fn is_foo_fn(fn_kind: FnKind<'_>) -> bool {
     match fn_kind {
-        FnKind::Fn(_, ident, ..) => {
+        FnKind::Fn(_, _, Fn { ident, .. }) => {
             // check if `fn` name is `foo`
             ident.name.as_str() == "foo"
         }

Original file line number	Diff line number	Diff line change
@@ -416,7 +416,7 @@ In our example, `is_foo_fn` looks like:
`416`	`416`
`417`	`417`	`fn is_foo_fn(fn_kind: FnKind<'_>) -> bool {`
`418`	`418`	`match fn_kind {`
`419`		`- FnKind::Fn(_, ident, ..) => {`
	`419`	`+ FnKind::Fn(_, _, Fn { ident, .. }) => {`
`420`	`420`	// check if `fn` name is `foo`
`421`	`421`	`ident.name.as_str() == "foo"`
`422`	`422`	`}`