Checking whether the double value is an integer - Swift - checking if a double value is an integer - swift

problem ：

I need to check if a double-defined variable is convertible to Int without losing its value. I need to check whether the double definition variable can be converted to Int Without losing its value .This doesn't work because they are of different types: It doesn't work , Because of their different types ：

if self.value == Int(self.value)

where self.value is a double. among self.value It's double self.value value .

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Solution ：

Reference resources ： https://stackoom.com/en/question/1vMYO