using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace JsConsole.Extensions

{

public static class StringExtension

{

public static bool Contains(this string mystring, List<string> listString)

{

return listString.Any(mystring.Contains);

}

public static bool IsEmpty(this string mystring)

{

return String.IsNullOrWhiteSpace(mystring);

}

public static string EncryptCesar(this string phrase, int decalage)

{

return String.Concat(phrase.Select(p => (char)(p + decalage)));

}

public static string DecryptCesar(this string phrase, int decalage)

{

return String.Concat(phrase.Select(p => (char)(p - decalage)));

}

public static string EncodeBase64(this string phrase)

{

return Convert.ToBase64String(Encoding.UTF8.GetBytes(phrase));

}

public static string DecodeBase64(this string phrase)

{

return Encoding.UTF8.GetString(Convert.FromBase64String(phrase));

}

}

}