Defining functions
Basic definition
next x = x + 1
Here we define a function that returns a number that is one greater than its argument.
- The name of the function -
next - The argument -
x
add x y = x + y
hello x = "Hello " ++ x
A function can return multiple values.
helloNext x = (next x, hello (show(next x)) )
Pattern matching
firstName "Me" = "Hello, Me"
firstName "Dun" = "HI"
firstName x= hello x
Branching conditionals
Haskell uses If-then-else example
f x = if even x then putStrLn "even" else putStrLn "old"