C# Linq + String Extensions

Here is an Linq extension which returns your custom error message in cause of an exception. Linq Implemented: First, Last, Single, MinOrDefault, MaxOrDefault, AverageOrDefault String Implemented: Left, Right Stopwatch: ToFormatedString

For funny reason you can use Highlander instead of Single :)

Available for:

• .NET 8.0
• .NET 6.0
• .NET Standard 2.0
• .NET 4.8

Example Linq:

	List<string> newList = new List<string> {"1234", "987654"};
	newList.SingleOrDefault(x => x == "searchString", "custom error message e.g. search string mot in list");

	List<int> newList = new List<int> {1234, 987654};
	newList.Select(x => x).MinOrDefault();

	var dataList = new List<decimal>() { 15.2M, 18.6M, 55.23M };
	var result = dataList.Select(x => x).MaxOrDefault();

    var dataList = new List<decimal>() { 15.2M, 18.6M, 55.23M };
    var result = dataList.Select(x => x).AverageOrDefault();

Example String:

	string testString = "anyTestText";
	var result = testString.Left(4);
	// result == "anyT"

	string testString = "anyTestText";
	var result = testString.Right(4);
	// result == "Text"

	string testString = "Add Additional String";
	var result = testString.ReplaceExactWord("Add", "Insert");
	// result == "Insert Additional String"

Example Stopwatch:

	var result = m_Stopwatch.ToFormatedString("g")
	// result == "0:00:01,5"

	var result = m_Stopwatch.ToFormatedString(@"mm\:ss\.ff")
	// result == "00:01.50"

Example DateTime:

	DateTime result = new DateTime(2019, 1, 22).WeekBeginn();
	// result == new DateTime(2018, 12, 31)

	int result = new DateTime(2016, 2, 22).DaysInMonth()
	// result == 29

Licence:

http://choosealicense.com/licenses/bsd-2-clause/