swift中出现Binary operator '*' cannot be applied to operands of type 'Double' and 'Int' 当使用Int类型的变量和Double类型的变量进行运算时会报这个错,在swift中不允许两种不一样的类型进行运算操作,因为最后得到的结果会丢失精度。需要把其中一个变量的类型进行转换使得两个变量的类型一样。 最后编辑于:...
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem |...
I have a DropDownList named ddlCluster, and I want to do a simle test:if (ddlCluster.SelectedValue == 0){//some stuff goes here}Now this is returning this error: CS0019: Operator '==' cannot be applied to operands of type 'string' and 'int'...
[已解决]Swift代码出错:Binary operator / cannot be applied to operands of type CGFloat and Int 解决方法 let indexTemp:CGFloat = 12.4 1. Double(indexTemp/4) 2. Double(CGFloat(indexTemp)/CGFloat(4))
Error - Operator '==' cannot be applied to operands of type string and char Error - The conversion of a nvarchar data type to a datetime data type resulted in an out-of-range value. Error - The remote name could not be resolved:https Error - The string was not recognized as a va...
C# and Linq --> Operator '>=' cannot be applied to operands of type 'int' and 'System.Linq.IQueryable<int?> C# How to retrieve values from the last row in a DataTable C# How to update a data base with a DataSet? C# Parameterized Query with null values ...
var total: Double = 0 for number in numbers { total += number } return total / Double(numbers.count)} arithmeticMean(1, 2, 3, 4, 5)// returns 3.0, which is the arithmetic mean of these five numbers arithmeticMean(3, 8, 19)// returns 10.0, which is the arithmetic ...
这样又引发了语法错误。 Severity Code Description Project File Line Suppression State Error CS0019 Operator'||'cannot be applied to operands of type'bool?'and'bool?' 解决方案 if((btn1.Tag?.ToString().StartsWith("Menu") ??false) || (btn2.Tag?.ToString().StartsWith("Submenu") ??false))...
Hi. I'm getting an error on the index 1 of my code : Binary operator '+' cannot be applied to operands of type '()' and 'String'. The code block is the following func addDance (_ sentence: String) { return addDance(sentence: String) + " and then we dance" } The instruction...
需要强制类型转化