// Generate a random floating-point number let random_float: f64 = rng.gen(); println!("Random float: {}", random_float); // Generate a random integer in a range let random_in_range = rng.gen_range(1..=10); // 1 to 10 inclusive println!("Random number in range 1 to 10: ...
("Guess the number!"); let secret_number = rand::thread_rng().gen_range(1..=100); loop { println!("Please input your guess."); let mut guess = String::new(); io::stdin() .read_line(&mut guess) .expect("Failed to read line"); let guess: u32 =...
gen_range(1..=100); println!("The secret number is: {secret_number}"); println!("Please input your guess."); let mut guess = String::new(); io::stdin() .read_line(&mut guess) .expect("Failed to read line"); println!("You guessed: {guess}"); match guess.cmp(&secret_...
fn main() { let num = rand::Rng::gen_range(1, 101); println!("Random number: {}", num); } 模块重用 模块不仅可以用于代码组织,还可以用于重用代码。通过将代码分割成模块,可以在不同的项目中重用模块。 示例代码:模块重用 pub mod utility { pub fn generate_id() -> String { // 用于生成...
implWeightedRandomNumberGenerator{ fnnew(values:Vec,weights:Vec)->Self{ lettotal_weight:u32=weights.iter().sum(); Self{ values, weights, total_weight, } } fngenerate(&self)->u32{ letmutrng=rand::thread_rng(); letrandom_weight:u32=rng.gen_range(0..self.total_weight); letmutcumulativ...
println!("Guest the number:"); let secret_number = rand::thread_rng().gen_range(1..101); println!("The secret number is: {}", secret_number); println!("Please input your guesss."); let mut guess = String::new(); io::stdin().read_line(&mut guess).expect("Failed to read ...
(记重点) 另外,let secret_number : u32这个定义多了对secret_number这个变量的类型说明(u32,明显是无符号int32类型),显然是因为无法从后面的gen_range方法推断前面的变量类型的原因。如果不加这个类型说明,编译过程会报错。 类型变化: 代码语言:javascript...
use std::ops::{Range, RangeInclusive}; Range{ start: 1, end: 5 }) // 不包含5 RangeInclusive::new(1, 5) // 包含5 1. 2. 3. 字符长度的不同 // 中文的地址占了4个字节 let _v: () = (); // 定义函数 assert!(size_of_val(&unit) == 0); ...
Rust的gen_range函数可以通过指定范围的起始值和结束值来生成一个随机数。例如,以下代码将生成一个1到10之间的随机数: 代码语言:txt 复制 use rand::Rng; fn main() { let mut rng = rand::thread_rng(); let random_number = rng.gen_range(1..=10); println!("Random number: {}", random_number...
In the above program, we imported the "rand" library to our project for generating random numbers. We imported the "rand" library using the below line: use rand::Rng; In themain()function, we generated an integer number between the specified range using thegen_range()method and printed th...