25 lines
372 B
Markdown
25 lines
372 B
Markdown
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---
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title: Hello World Program
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localeTitle: 你好世界计划
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---
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## Haskell中最简单的Hello World程序
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```haskell
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main :: IO ()
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main = do
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putStrLn "Hello World"
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```
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## Hello World使用函数组合
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```haskell
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hello :: String
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hello = "Hello World"
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printer :: String -> IO ()
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printer = putStrLn . show
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main :: IO ()
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main = printer hello
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```
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