![]() ![]() Represents all hexadecimal digits (digits 0-9, letters a-f, and letters A-F) Represents all alphanumeric characters (all letters and numbers) Represents all uppercase letters (any letter that is upper case) Represents all space characters (a normal space, tab, etc.) Represents all punctuation characters (".", ",", etc.) Represents all lowercase letters (any letter that is lower case) ![]() Represents all printable characters except space (same as '') Represents all control characters (special characters "\t", "\n", etc.) Represents all letters (from a to z upper and lower case) They can be either predefined sets or custom sets that can consist of the same predefined sets, ranges or any single characters.Īvailable character classes (custom and predefined): Class Character classesĬharacter classes represent a set of characters. They can also be used in the pattern as normal characters by prefixing them with a "%" character, so "%%" becomes "%", "%[" becomes "[", etc. ![]()
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