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

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

rust忽略Result
rust const generic