For learning purposes, I am trying to convert &[u8] into u32.

I read the compiler's errors applied the suggestions, but could not get it to convert.

Here is one that runs fine, and the commented out fails, I can not understand why.

use num_traits::FromBytes; // 0.2.19

// fn convert<T: num_traits::FromBytes>(data:&[u8]){
//     let value:T = FromBytes::from_le_bytes(data);
//    println!("{value}")
// }

fn main() {
    let a = &[1,0,0,0];
    let value:u32 = FromBytes::from_le_bytes(a);
    println!("{value}");
    // let _ = convert::<u32>(a);
}

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