What are custom data types in Haskell?
Custom data types in Haskell allow you to define your own types, enhancing code clarity and structure.
Can you give me an example of a custom data type?
Sure! Here's a simple example: data Shape = Circle Float | Rectangle Float Float
.
How do I create a function that uses this custom data type?
You can define a function like this: area :: Shape -> Float
and then pattern match on the Shape.
What if I want to add more shapes later?
You can easily extend the Shape
type by adding more constructors, like data Shape = Circle Float | Rectangle Float Float | Triangle Float Float Float
.
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