👉 A "unfolder" in programming refers to a function or method that performs the opposite of what is typically done by other functions. In the context of computing, an "unfold" operation involves extracting or isolating data from a larger set or object, often used for manipulating collections and dictionaries. For example: ```python def sum_list(lst): return sum(lst) ``` In this code snippet, `sum_list` is a function that takes a list as an argument and returns the