Anyway to shorten `.into()` to `.i`?

Macro could do better.

I tried to implement CustomInitialize and CustomAssign trait in both my toy crate and this forum, which allow using

fn main() {cai!{// Custom Assign and Initialize, or "菜" in Chinese which suggest my programming skill is not good enough.
    let a:i32:=1u8;
    let mut b=1i32;
    b~a;
    b:=a;
}}

by define the corresponding trait correctly.
no need to write Neg trait which actually do not support convert the base type to different types.