绑定与引用
Rust 表达式与控制流
let v = vec![1, 2, 3, 4, 5]; // v: Vec<i32>
let v = vec![0; 10]; // A vector of ten zeroes.
let v = vec![1, 2, 3, 4, 5];
println!("The third element of v is {}", v[2]);
fn main() {
println!("{}", "These
are
three lines");
}
fn main() {
println!("{}", "These\n\
are\n\
three lines");
}