split_at_mut(mid); rayon::join(|| quick_sort(lo), || quick_sort(hi)); } } // Partition rearranges all items `<=` to the pivot // item (arbitrary selected to be the last item in the slice) // to the first half of the slice. It then returns the // "dividing point" where...
split_last_mut():返回一个数组的最后一个可变引用。 let mut arr = [1, 2, 3, 4, 5];let (last, rest) = arr.split_last_mut().unwrap();*last = 0;assert_eq!(arr, [1, 2, 3, 4, 0]); chunks():返回一个可迭代的切片集合,每个切片包含指定大小的元素。 let arr = [1, 2, 3, ...
let s: Box<str> = "hello".to_string().into_boxed_str(); Box<str> 可以轻易地转换为其他类型使用(例如 &str, Box<dyn Display>),在进行特定类型操作时更方便。 let s: Box<str> = "hello".to_string().into_boxed_str(); let display: Box<dyn Display> = s as Box<dyn Display>; println!
cargo run命令允许向程序传递参数,因此可以这样来测试命令行程序: $ cargo run 42 56 Compiling hello v0.1.0 (file:///home/jimb/rust/hello) Finished dev [unoptimized + debuginfo] target(s) in 0.38 secs Running `/home/jimb/rust/hello/target/debug/hello 42 56` The greatest common divisor of...
SplitNInternal<'a, P>: 该结构体表示按指定模式进行分割的迭代器,但限制分割的次数。具体的分割逻辑由实现 SplitN trait 的结构体决定。 SplitN<'a>: 该结构体实现了 SplitN trait,用于按指定的分割字符进行分割,但限制分割的次数。 RSplitN<'a>: 该结构体实现了 SplitN trait,用于按指定的分割字符进行反...
fn split_at_mut (usize) -> (&mut [T], &mut [T]) fn split_first_mut () -> Option<(&mut T, &mut [T])> fn split_last_mut () -> Option<(&mut T, &mut [T])> Chunks fn chunks_mut (usize) -> Iterator<Item = &mut [T]> ...
let vals: Vec<&str> = path.split(' ').collect(); if vals.len() == 1 { (path, Level::Info) } else { ( vals[0].to_string(), Level::from_str(vals[1]).ok().unwrap_or(Level::Info), ) } }; // 设置默认的匹配类型打印时间信息 ...
Large language models (LLMs) can be used for many tasks, but often have a limited context size that can be smaller than documents you might want to use. To use documents of larger length, you often have to split your text into chunks to fit within this context size. ...
let text = " ponies \n giraffes\niguanas \nsquid".to_string(); let v: Vec<&str> = text.lines() .map(str::trim) // 先调用适配器map .filter(|s| *s != "iguanas") // 再调用适配器filter .collect(); assert_eq!(v, ["ponies", "giraffes", "iguanas", "squid"]); ...
split_whitespace().collect(); if !args.starts_with(&["start"]) || args.len() > 2 { eprintln!("Invalid command."); return; } if args.len() == 2 { self.first_player = match args[1].parse() { Ok(player) => player, Err(_) => { eprintln!("Invalid player."); return; ...