It makes a copy of a string with the first character converted to uppercase.
It counts the occurrences of a given substring in a text.
It makes a copy of the string with all occurrences the matching substrings arguments deleted.
It simplifies the slicing of a string using the bracket notation.
It inserts the given otherString into this string at the specified index.
It makes a copy of a string with uppercase alphabetic characters converted to lowercase and lowercase characters converted to uppercase. The case of non-alphabetic characters is not changed.
It simplifies the repetition of a string using the times(*) operator.