Hello everybody,
I'm new with rust, and I'm trying some exercises, at the begining only copying and testing.
I would like to get a random number (interger or float, whatever, it is a testing purpose)
In cargo.toml, I added:
[dependencies]
rand = "0.8.0"
And in the main.rs:
extern crate rand;
use rand::thread_rng;
use rand::Rng;
fn main() {
let mut rng = thread_rng();
let y: f64 = rng.gen_range(-10.0, 10.0);
println!("Number from -10. to 10.: {}", y);
println!("Number from 0 to 9: {}", rng.gen_range(0, 10));
}
But I get:
error[E0061]: this function takes 1 argument but 2 arguments were supplied
--> src/main.rs:57:22
|
57 | let y: f64 = rng.gen_range(-10.0, 10.0);
| ^^^^^^^^^ ----- ---- supplied 2 arguments
| |
| expected 1 argument
error[E0061]: this function takes 1 argument but 2 arguments were supplied
--> src/main.rs:59:44
|
59 | println!("Number from 0 to 9: {}", rng.gen_range(0, 10));
| ^^^^^^^^^ - -- supplied 2 arguments
| |
| expected 1 argument
Do you have any idea why I cannot write 2 numbers for my range ? Thank you.