👉 In the context of computer science and software engineering, a "sizer" is a function or tool that measures the size of an input data structure. It's often used to determine how much memory a system has available for processing data. For example, if you're working with a large dataset, sizers like Numpy can help you analyze its size and suggest ways to optimize storage and computation. The term "sizer" is commonly used in software development contexts where the goal is to understand