Fast Haskell: Competing with C at parsing XML
In this post we’re going to look at parsing XML in Haskell, how it compares with an efficient C parser, and steps you can take in Haskell to build a fast library from the ground up. We’re going to get fairly detailed and get our hands dirty. A new kid on the block A few weeks ago Neil Mitchell posted a blog post about a new XML library that he’d written. The parser is written in C, and the API is
Use the REPL, Luke
There was an online discussion about iteration times in Haskell and whether and why they are slow. For me, it’s not slow. I do all my Haskell development using a REPL. Here are some tips I wrote up in that discussion. Prepare for GHCi use The first thing you want to do before writing anything for your project is make sure you can load your code in the REPL; GHCi. Sometimes you have special configu
shell-conduit: Write shell scripts in Haskell with Conduit
shell-conduit: Write shell scripts in Haskell with Conduit As part of my series of write-about-personal-projects, my latest obsession is writing shell scripts with Michael Snoyman’s Conduit. Here is my package, shell-conduit. It’s still in the experimental phase, but I don’t forsee any changes now for a while. Bash is evil I hate writing scripts in Bash. Until now, it was the easiest way to just w
Compiling to JavaScript with UHC
Last week I took a crack at testing the JavaScript compilation backend supported by UHC. There don’t seem to be any instructions1, that I have been able to find, on working with the JS backend. But it’s more or less straight-forward to figure out.As far as I understand quite a lot of what’s working now is thanks to Atze Dijkstra and Jurriën Stutterheim,2 so cheers to those!Build and Install UHCI u
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A plain English description of monads without Haskell code
