Question

How to print data types of variables in Rust

Answer 1

fn print_type_of<T>(_: &T) {
    println!("{}", std::any::type_name::<T>())
}
 
fn main() {
    let string = "Rust C C++";
    let i = 874;
    let f = 3.14;
    let b = true;
    let vector = vec![1, 2, 3];
    
 
    print_type_of(&string);   
    print_type_of(&i);   
    print_type_of(&f);    
    print_type_of(&b);  
    print_type_of(&vector); 
    print_type_of(&main);
     
}




/*
run:
    
&str
i32
f64
bool
alloc::vec::Vec<i32>
test::main
    
*/

 

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