1//! sum fn 2//! demo 3/// add one 4/// #Demo 5/// ``` 6/// let c = ace_rust_lib::sum(1,2); 7/// assert_eq!(ace_rust_lib::sum(1,2), 3); 8/// ``` 9pub fn sum(a: i32, b: i32) -> i32 { 10 a + b 11}