Splitting CamelCase with regex

Question

I have this code to split CamelCase by regular expression:

Regex.Replace(input, \"(?<=[a-z])([A-Z])\", \" $1\", RegexOptions.Compiled).Trim();
         


        

Answer 1

using Tomalak's regex with .NET System.Text.RegularExpressions creates an empty entry in position 0 of the resulting array:

Regex.Split("ShowXYZColors", @"(?=\p{Lu}\p{Ll})|(?<=\p{Ll})(?=\p{Lu})")

{string[4]}
    [0]: ""
    [1]: "Show"
    [2]: "XYZ"
    [3]: "Colors"

It works for caMelCase though (as opposed to PascalCase):

Regex.Split("showXYZColors", @"(?=\p{Lu}\p{Ll})|(?<=\p{Ll})(?=\p{Lu})")

{string[3]}
    [0]: "show"
    [1]: "XYZ"
    [2]: "Colors"