using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?'number'(?'float'(?>\d+[\.](?>\d+)?)|(?>(?>\d+)?[\.]\d+))|\d+)(?'exponent'e[+-](?&number))?";
string input = @" 2.0
.0
3.
2e+1
2.0e+1
2.123e+1.2
2
5
2 2 4 5 6
";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx