Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I was reading LYAH and read that the Num class isn’t a subset of Ord. This means that there is a Num type which is not a member of Ord, what could constitute such a type?
Note: Num is not a subclass of Ord. That means that what constitutes
for a number doesn’t really have to adhere to an ordering. So that’s
why we have to specify both the Num and Ord class constraints when
doing addition or subtraction and also comparison.
Thanks!
Complex number (Data.Complex.Complex) is one example which is a number (Num) but cannot be ordered (not Ord).