如何在haskell中打印列表？

Question

How do I print a list to stdout in Haskell?

Let's say I have a list [1,2,3] and I want to convert that list into a string and print it out. I guess I could build my own function, but surely Haskell has a function built in to do that.

Answer 1

Indeed there is a built in function, aptly named print .

> print [1,2,3]
[1,2,3]

This is equivalent to putStrLn $ show [1,2,3] .