Variables

Variables in Haskell

In Haskell, variables are immutable bindings. Once bound, a value never changes. You bind values inside a do block using let:

main :: IO ()
main = do
  let name = "Alice"
  let age = 30
  putStrLn name
  print age

Types

Haskell is statically typed. Common types:

You can optionally annotate types:

let x :: Int
    x = 42

show

show converts any showable value to a String:

putStrLn (show 42)   -- "42"

Your Task

Bind name to "Haskell" and year to 1990, then print them each on their own line using putStrLn and show.