👉 "Unstrings" is a phrase in programming and computer science, referring to undefined behavior or unintended consequences that occur when a programmer attempts to use string manipulation functions like `str.join()` or `join()` on an empty string. This can happen if the input string is not properly formatted or if there are multiple spaces between elements. For example: ```python unstrings = "hello" print(unstrings) # Output: "" print(join(unstrings, "")) # Output: hello

unstrings