usestd::io;// preludeuserand::Rng;// traitusestd::cmp::Ordering;// 枚举类型 三个变体(值)fnmain() {println!("猜数!");letsecret_number= rand::thread_rng().gen_range(1..101);// println!("神秘数字是:{}", secret_number);loop{println!("猜测一个数");// let mut foo = 1;//...
c alias: check check Check a local package and all of its dependencies for errors clean Remove artifacts that cargo has generated in the past clippy Checks a package to catch common mistakes and improve your Rust code. config Inspect configuration values d alias: doc doc Build a package's do...
pub default_binding_modes: bool, } impl<'hir> Pat<'hir> { fn walk_short_(&self, it: &mut impl FnMut(&Pat<'hir>) -> bool) -> bool { if !it(self) { return false; } use PatKind::*; match self.kind { Wild | Never | Lit(_) | Range(..) | Binding(.., None) | ...
BuiltinTrivialBounds<'a>:用于检查泛型参数的边界是否是平凡的,报告可能的错误和建议。 BuiltinKeywordIdents:用于检查关键字命名的标识符,报告可能的错误和建议。 BuiltinExplicitOutlives:用于检查泛型参数的终极生命周期,报告可能的错误和建议。 BuiltinExplicitOutlivesSuggestion:用于给出泛型参数终极生命周期的建议。
Tracking Issue for `substr_range` and related methods #126769 commented on Dec 23, 2024 • 0 new comments Tracking Issue for PathBuf::add_extension and Path::with_added_extension #127292 commented on Dec 23, 2024 • 0 new comments Suboptimal codegen for integer slice matching withou...
for_,x:=range items{doSomething(x)} 代码语言:javascript 复制 packagemainimport("fmt")funcmain(){items:=[]int{11,22,33}for_,x:=range items{doSomething(x)}}funcdoSomething(i int){fmt.Println(i)} 输出 代码语言:javascript 复制
Execute different procedures foo, bar, baz and barfl if the string str contains the name of the respective procedure. Do it in a way natural to the language. switch语句 代码语言:javascript 复制 packagemainimport("fmt")funcmain(){str:="baz"switchstr{case"foo":foo()case"bar":bar()case"...
整数具有固定的范围(range)。每一个整数类型,当我们在计算机中表示它们时,它们都占用一个固定的位数。不像浮点数,整数不能牺牲它们的精度去扩展它们的范围。一旦这些位已经被填满1,唯一的前进方向就是所有位都回到0。 一个16位的整数可以表示0~65535(不包含)这些数字,当你想加到65536时会发生什么?我们来试试。
cargo-check— A wrapper around cargo rustc -- -Zno-trans which can be helpful for running a faster compile if you only need correctness checks cargo-commander— A subcommand for cargo to run CLI commands similar to how the scripts section in package.json works cargo-count— lists source ...
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