On: Rewriting String.Left()

[tlrobinson]

I don't know C#, but in most languages I know, this string.left(n) method is just equivalent to string.substring(0, n).

[crescendo → tlrobinson]

Actually, string.Substring(0, n) is also the C# idiom. The orignial blogger is essentially creating a method alias Left(n) => Substring(0, n), which IMO is not a good use for extension methods.