环境
- Rust 1.56.1
- VSCode 1.61.2
概念
参考:https://doc.rust-lang.org/rust-by-example/std/str.html
示例
rust 中有两种字符串,一种是分配在堆上的 String,另一种是字符串切片(&str)。
main.rs
fn main() {
let pangram = "the quick brown fox jumps over the lazy dog";
println!("Pangram: {}", pangram);
for word in pangram.split_whitespace().rev() {
println!("> {}", word);
}
let mut chars: Vec<char> = pangram.chars().collect();
chars.sort_unstable();
chars.dedup();
let mut string = String::new();
for c in chars {
string.push(c);
string.push_str(", ");
}
let chars_to_trim: &[char] = &[' ', ','];
let trimmed_str: &str = string.trim_matches(chars_to_trim);
println!("Used characters: {}", trimmed_str);
let alice = String::from("I like dogs");
let bob: String = alice.replace("dog", "cat");
println!("Alice says: {}", alice);
println!("Bob says: {}", bob);
}
总结
了解了 Rust 中字符串,以及一些常用的方法。