随笔分类 - Rust
摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 into_boxed_bytes fn main() { let name = "JiangBo"; println!("{:?}", name.to_owned().into_boxed_str().into_boxed_byte
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 strip_suffix fn main() { let name = "\nJiang\nBo\n"; println!("{:?}", name.strip_suffix('\n')); } parse fn main() {
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 match_indices fn main() { let name = "\nJiang\nBo\n"; name.match_indices(char::is_alphabetic) .for_each(|e| println!
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 rsplit fn main() { let name = "Jiang\nBo"; name.rsplit('\n').for_each(|e| println!("{e:?}")); } split_terminator fn
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 lines fn main() { let name = "Jiang\nBo"; name.lines().for_each(|e| println!("{e:?}")); } encode_utf16 fn main() { l
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 get_unchecked fn main() { let name = "JiangBo"; println!("{:?}", unsafe { name.get_unchecked(5..) }); } get_unchecke
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 len fn main() { let name = "JiangBo"; println!("{:?}", name.len()); } is_empty fn main() { let name = "JiangBo"; pri
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 drain fn main() { let mut name = String::from("JiangBo"); let name = name.drain(..5); println!("{:?}", name); } repl
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 remove fn main() { let mut name = String::from("JiangBo"); name.remove(4); println!("{name:?}"); } retain fn main()
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 capacity fn main() { let name = String::from("JiangBo"); println!("{:?}", name.capacity()); } reserve fn main() { le
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 new fn main() { let s = String::new(); println!("{:?}", s.capacity()); } with_capacity fn main() { let s = String::w
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摘要：环境 Time 2022-03-25 Rust 1.59.0 示例 or fn main() { let result: Result<u32, u32> = Ok(44); println!("{:?}", result.or(Err(4))); } or_else fn main() { let
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摘要：环境 Time 2022-03-25 Rust 1.59.0 示例 as_deref fn main() { let result: Result<String, u32> = Ok("ok".to_owned()); let result: Result<&str, &u32> = result.
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摘要：环境 Time 2022-03-24 Rust 1.59.0 示例 is_ok fn main() { let result: Result<i32, &str> = Ok(44); println!("{:?}", result.is_ok()); } is_err fn main() { let
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摘要：环境 Time 2022-03-23 Rust 1.59.0 示例 find_map fn main() { let vec = ["lol", "NaN", "2", "5"]; let result: Option<i32> = vec.iter().find_map(|s| s.parse()
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摘要：环境 Time 2022-03-23 Rust 1.59.0 示例 collect fn main() { let vec = vec![0, 1, 2, 3, 4]; let doubled: Vec<_> = vec.iter().map(|e| e * 2).collect(); for el
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摘要：环境 Time 2022-03-22 Rust 1.59.0 示例 take_while 在找到返回 false 的值后，忽略剩余所有元素。 fn main() { let vec = vec![0, 1, 2, 3, 4]; vec.iter() .take_while(|&e| e % 2 ==
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摘要：环境 Time 2022-03-22 Rust 1.59.0 示例 for_each 和 for 循环类型，遍历每个元素。 fn main() { let vec = vec![0, 1, 2, 3, 4]; vec.iter().for_each(|e| println!("{e}")); } m
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摘要：环境 Time 2022-03-22 Rust 1.59.0 示例 iter 生成一个迭代器，可变版本 iter_mut，所有权版本 into_iter。 fn main() { let vec = vec![0, 1, 2, 3, 4]; let iter = vec.iter(); printl
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摘要：环境 Time 2022-03-17 Rust 1.59.0 概念 动态数组分配在栈上，长度可以变化。 示例 leak fn main() { let vec = vec![0, 1, 2, 3, 4]; let leak = vec.leak(); println!("{leak:?}"); }
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