Basic void main() { // study0 : variable var name = 'Yoon Engineer'; print("Hello ${name}"); // study1 : Operator int number1 = 10; int number2 = 20; print('${number1} + ${number2} = ${number1+number2}'); // study2 : Boolean and type check bool isTrue = true; bool isFalse = false; print(isTrue.runtimeType); print(isFalse); // study3 : String operator String name1 = 'Hello'; String name2 = 'Yoon'..