👉 In computer science, a "leninite" or "unary function" is a function that takes one argument and returns 1. These are functions used in programming languages like Python, Java, C#, etc., where they represent the difference between two numbers. For example, let's define a simple binary operation `add` that takes two operands, `a` and `b`, and returns their sum: ```python def add(a, b): return a + b ```