This code works, but I want to explicitly declare the type of the index range max
. However uX
or iX
, where X = 8, 16 or 32 gives compile errors. What is the correct type?
fn main() {
let mut arr2: [[f64; 3]; 3] = [[0.0; 3]; 3];
let pi: f64 = 3.1415926535;
let max = 3; // let max: i16 e.g. is wrong
for ii in 0..max {
for jj in 0..3 {
let i = ii as f64;
let j = jj as f64;
arr2[ii][jj] = ((i + j) * pi * 41.0).sqrt().sin();
println!("arr2[{}][{}] is {}", ii, jj, arr2[ii][jj]);
}
}
}
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