What is function composition in Haskell?

Can you explain function composition in Haskell?

Sure! Function composition in Haskell allows you to combine two or more functions to create a new function. It's done using the (.) operator.

How does the (.) operator work?

The (.) operator takes two functions, say f and g, and returns a new function that applies g first and then f. So, (f . g) x = f (g x).

Can you give me an example of using function composition?

Absolutely! For instance, if you have two functions: double x = x * 2 and increment x = x + 1, you can compose them like this: let combined = increment . double. Now, combined 3 will give you 7.

What are the benefits of using function composition?

Function composition promotes code reusability and clarity, allowing you to build complex functions from simpler ones.