A slightly better refactoring for SLAP

slap-code-final.cs

public class SomeClass
{
	List<string> extractedValues = new List<string>();
	
	public void DoSomeWork(string inputFile)
	{
		using (var file = OpenInputFile(inputFile))
		{
			while (MoreDataExists(file))
			{
				var nextLine = ReadNextLine(file);
				ProcessLine(nextLine);
			}
		}
	}

	void ProcessLine(string inputLine)
	{
		var inputData = GetFieldData(inputLine);
		var desiredValue = ExtractDesiredValue(inputData);
		AddValueToList(desiredValue);
	}

	StreamReader OpenInputFile(string inputFile)
	{
		return new StreamReader(inputFile);
	}

	string[] GetFieldData(string inputLine)
	{
		return inputLine.Split(',');
	}

	string ExtractDesiredValue(string[] fields)
	{
		return fields[3];
	}

	bool MoreDataExists(StreamReader reader)
	{
		return reader.Peek() >= 0;
	}

	void AddValueToList(string value)
	{
		extractedValues.Add(value);
	}
	
	string ReadNextLine(StreamReader reader)
	{
		return reader.ReadLine();
	}
}