Returns true
if the given string can be parsed into a double, false
otherwise.
Return the result of calling Double.TryParse()
with NymberStyles.Float
for the given num
string.
代码实现
using System.Globalization;
public static partial class _30s
{
public static bool IsDouble(string num)
{
Double _ = 0.0;
return Double.TryParse(num, NumberStyles.Float, NumberFormatInfo.CurrentInfo, out _);
}
}
使用样例
_30s.IsDouble("2"); // true
_30s.IsDouble("hi"); // false