【1】不可变借用(immutable borrow):Rust允许一个变量同时有多个不可变借用,例如let x=String::from("test"); let y = &x; let z=&x;,则y和z都是x的不可变借用 【2】可变借用(mutable borrow):Rust只允许一个变量同时有一个可变借用,例如let x=vec![0;32]; let y=& mut x; let z=&
对比 Rust 与 C++，我认为 Rust 做得更好；因为 C++ 那面我们还得学 Destruct 的次序（全局变量 con...
fn_proc_macro_mapping: FxHashMap::default(), proc_macro_loading_error: None, registered_attrs: Vec::new(), registered_tools: PREDEFINED_TOOLS.into(), registered_tools: PREDEFINED_TOOLS.iter().map(|it| Symbol::intern(it)).collect(), unstable_features: FxHashSet::default(), rustc_coheren...
let mut hasher = std::collections::hash_map::RandomState::new().build_hasher(); std::panic::Location::caller().hash(&mut hasher); let hc64 = hasher.finish(); let seed_vec = hc64.to_le_bytes().into_iter().chain(0u8..8).collect::<crate::vec::Vec<u8>>(); let seed: [u8...
(the details of// the structure are effectively hidden from the client; construction could// be moved into `Point::new` as well)structPoint(Vec2);implPoint{pubfnx_mut<'a>(&mutself)->&'amutf64where'a:&mutself.0.0{&mutself.0.0}pubfny_mut<'a>(&mutself)->&'amutf64where'a:&mut...
// use std::collections::HashMap; /// ensure that we don't suggest `is_nan` and `is_null` inside constants /// ensure that we don't suggest `is_null` inside constants /// FIXME: once const fn is stable, suggest these functions again in constants const BAA: *const i32 = 0 as...