Type signature

A type signature is like a name tag that tells you what kind of thing you're dealing with. For instance, you might have a toy car that's type signature says "toy car" on it, so you know that it's not a real car but something you can play with. Type signatures help you keep track of what you're working with when you're writing code. They make sure that the computer knows what kind of information it's dealing with and what you expect it to do with that information. So, when you write code, you can specify the types of data that you're using, like numbers, letters, or other types of information. This helps the computer understand what you're trying to do and lets it check that you're not doing anything that doesn't make sense. Type signatures are like the labels on your toy bins that tell you where to put your toys so you can find them later. They help you organize your code so you can find what you need when you need it.