feat(ci): Added CI

src/main.rs

@@ -1,48 +1,5 @@
-enum MATH {
-    ADD,
-    SUB,
-    MUL,
-    DEV,
-}
-
-struct Math {
-    a: i32,
-    b: i32,
-}
-
-impl Math {
-    fn init(a: i32, b: i32) -> Math {
-        return Math { a, b };
-    }
-
-    fn calculate(&self, operation: MATH) -> i32 {
-        match operation {
-            MATH::ADD => return self.a + self.b,
-            MATH::SUB => return self.a - self.b,
-            MATH::MUL => return self.a * self.b,
-            MATH::DEV => {
-                if self.b == 0 {
-                    return 0;
-                } else {
-                    return self.a / self.b;
-                }
-            }
-        }
-    }
-
-    fn reinit(&mut self, a: i32, b: i32) {
-        self.a = a;
-        self.b = b;
-    }
-}
+use learning::Str;
 
 fn main() {
-    let operation: MATH = MATH::ADD;
-    let mut calculator: Math = Math::init(10, 4);
-
-    print!("ans: {}\n", calculator.calculate(operation));
-
-    calculator.reinit(32, 2);
-
-    println!("ans after reinit: {}", calculator.calculate(MATH::DEV));
+    let str: Str = Str::new();
 }