Working with value constructors in Haskell...

How to define a function that takes natural numbers of a data type and return their sum?...

Value constructors in haskell...

Why can't i re-use same value constructor among different data types?...

Why are types declared in value constructors not types in Haskell?...

data type with a default field and that needs a function that works with it...

Why am I able to use my value constructor even though I don't export it?...

What is the difference between value constructors and tuples?...