# rie RIE is rust interactive editor. REPL-like expirience based on interactive source code editing. ``` # cargo install rie # rie >> :2 * 2 = 4 >> let x = 2 = >> :x * 2 = 4 >> let f = |x : i32| x * x = >> :f(4) = 16 >> % 0 fn main() { 1 let x = 2; 2 let f = |x : i32| x * x; 3 } >> %d 2 0 fn main() { 1 let x = 2; 2 } >> ```