如何转换这个计算结果颤振

Question

想知道如何像整数那样显示这个结果

var symbol = data[index]["symbol"];
  double cureentprice = datarates["price"]["$symbol"];////this double is 1.17150

 double enrty = double.parse(data[index]["entryprice"]);////this is 1.17100

 double lo = cureentprice - enrty ;//i got like this result 0.00050

正如你在上面看到的，我得到了结果 0.00050，但我需要这样的结果 50

有没有想过做那样的事情？？

Answer 1

试试这个。也许这应该有所帮助。如果这不起作用，请告诉我。

var symbol = data[index]["symbol"];
   double cureentprice = datarates["price"]["$symbol"];////this double is 1.17150

 double enrty = double.parse(data[index]["entryprice"]);////this is 1.17100

 // double lo = cureentprice - enrty ;//i got like this result 0.00050

 int scale = 100000;
 double lo = currentPrice - enrty;
 var value1 = (lo * scale).floor(); 
 var value2 = (lo * scale).ceil();
 print(value1);
 print(value2);

Answer 2

您可以先缩放然后使用 floor() 或 ceil() 函数进行舍入以获得所需的输出。

 double currentPrice = 1.17150;
 double enrty = 1.17100;
 int scale = 100000;
 double lo = currentPrice - enrty;
 print((lo * scale).floor()); //prints 49
 print((lo * scale).ceil()); //prints 50

如何转换这个计算结果颤振

how to convert this result of calculation flutter

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