Flutter 开发笔记 —— 基础数据类型使用

1、double  

    坑！   

    double bbbb = 0.045;String   bbb =  bbbb.toStringAsFixed(2);print(bbb);                //0.04double bbbb = 0.055;String   bbb =  bbbb.toStringAsFixed(2);print(bbb);               //0.06 double bbbb = 0.0455;String   bbb =  bbbb.toStringAsFixed(2);print(bbb);              //0.05