了解如何在haskell中使用sprint和list评估

import Text.Printf

main :: IO ()
main = do
  let name = "Alice"
      age = 25
  printf "My name is %s and I am %d years old.\n" name age

-- 定义一个整数列表
numbers :: [Int]
numbers = [1, 2, 3, 4, 5]

-- 定义一个字符列表
letters :: [Char]
letters = ['a', 'b', 'c', 'd', 'e']

-- 定义一个混合类型的列表
mixed :: [Either Int Char]
mixed = [Left 1, Right 'a', Left 2, Right 'b']

main :: IO ()
main = do
  print numbers
  print letters
  print mixed

[1,2,3,4,5]
"abcde"
[Left 1,Right 'a',Left 2,Right 'b']