rust fragment specifier

阅读量: searchstar 2021-07-14 13:24:21
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Specifier Description Examples
ident Identifier x, foo |
path Qualified name | std:: std::collection::HashSet, Vec::new |
ty Type | i32, &T, Vec<(char, String)> |
expr Expression | 2+2, 2+2, f(42), if true { 1 } else { 2 } |
pat Pattern _, c @ 'a' ... 'z', (true, &x), Badger { age, .. } |
stmt Statement | let x let x = 3, return 42 |
block Brace-delimited block | { fo { foo(); bar(); }, { x(); y(); z() }
item Item | fn fo fn foo() {}, struct Bar;, use std::io; |
meta Inside of attribute | cfg!( cfg!(windows), doc="comment" |
tt Token tree | +, foo, 5, [?!(???)] |

原文:https://riptutorial.com/rust/example/5646/fragment-specifiers---kind-of-patterns