Parsec is what originally got me interested in Haskell. I had played around with it via LYAH [0] before, but never really got into it. I wanted to write a compi

Parsec is what originally got me interested in Haskell. I had played around with it via LYAH [0] before, but never really got into it. I wanted to write a compiler for a language I was playing with, and seeing Parsec convinced me I should dive in and learn Haskell, as it just lets you write parsers in an incredibly intuitive and quick way; for me at least, parser combinator libraries are much easier to use than parser generators, and are also a lot more modular. Even if you're familiar with parsec and parsing in Haskell, this post includes a fairly good explanation of De Bruijn indices. I've seen them a few times already but this explanation made it click particularly well. [0] Learn You a Haskell: http://learnyouahaskell.com/ http://learnyouahaskell.com/