Package-level declarations

Extension function to capitalize the first letter of a string.

Extension function for the String class that checks if the string contains any of the substrings from a given list.

Extension function for the String class that toggles the string value between the provided first and second strings.

Extension function for the String class that converts a hexadecimal string back to its original string representation.

Extension function to check if a string is a valid email address.

Extension function to check if a string is numeric.

Extension function to convert a string to title case.

Extension function to convert a string with spaces to camel case.

Extension function for the String class that converts the string to its hexadecimal representation.