Learning Haskell: Let's Code a Command Line Tool

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[SimGunther]

Monad bindings make all this stuff a million times easier to read and run faster in most cases than do blocks, which are indeed the gateway drug to monads and cofunctors :D

[mswai]

Do you have your vim dot files available?

[CliffStamp]

The problem with this, as an example program, is that it looks like a QBasic program. Read a string, store it in a value. Do something to the string, print that to the screen.

A user who reads about the glory of functional programming and monad burritos is going to wonder why anyone is getting excited about line by line input/out put.