Question

How to declare a RegEx with character repetition to match the strings "http", "htttp", "httttp", etc in VB.NET

Answer 1

Imports System
Imports System.Text.RegularExpressions

Class Program
	Public Shared Sub Main()
        Dim pattern As String = "htt+p"
        Dim regex As Regex = New Regex(pattern)
        Dim testStrings As String() = {"http", "htttp", "httttp", "httpp", "htp"}

		For Each test As String In testStrings
            Dim match As Boolean = regex.IsMatch(test)
            Console.WriteLine($"Matches ""{test}"": {match}")
        Next
    End Sub
End Class


' Matches "httpp": True or false, depending on how matches() method works

' run:
'
' Matches "http": True
' Matches "htttp": True
' Matches "httttp": True
' Matches "httpp": True
' Matches "htp": False
' 

 

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