HASKELL: I'm defining data types in Haskell. for example data Exp = Enum Int then I'm using the bar to define addition, multiplication, and logical not, logical else if. and also data Val = Vnum Int and also a boolean return value. I next want to write a function which takes an Exp as input and returns a value. What is the syntax for defining each data type? Right now I have: eval :: Exp -> Val eval (Enum x) = Vnum
HASKELL: I'm defining data types in Haskell. for example data Exp = Enum Int then I'm using the bar to define addition, multiplication, and logical not, logical else if. and also data Val = Vnum Int and also a boolean return value. I next want to write a function which takes an Exp as input and returns a value. What is the syntax for defining each data type? Right now I have: eval :: Exp -> Val eval (Enum x) = Vnum
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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HASKELL:
I'm defining data types in Haskell. for example
data Exp = Enum Int
then I'm using the bar to define addition, multiplication, and logical not, logical else if.
and also
data Val = Vnum Int
and also a boolean return value.
I next want to write a function which takes an Exp as input and returns a value.
What is the syntax for defining each data type?
Right now I have:
eval :: Exp -> Val
eval (Enum x) = Vnum
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