Dart编程实例 - 位运算符 Dart编程实例 - null值 Dart编程实例 - 更新一个列表 Dart编程实例 - 位运算符 void main() { var a = 2; // Bit presentation 10 var b = 3; // Bit presentation 11 var result = (a & b); print("(a & b) => ${result}"); result = (a | b); print("(a | b) => ${result}"); result = (a ^ b); print("(a ^ b) => ${result}"); result = (~b); print("(~b) => ${result}"); result = (a < b); print("(a < b) => ${result}"); result = (a > b); print("(a > b) => ${result}"); } Dart编程实例 - null值 Dart编程实例 - 更新一个列表