After someone asked for it in /r/haskell I added a link to the complete code for this post. https://github.com/tel/tel.github.io/tree/master/public/code/Mutabl

After someone asked for it in /r/haskell I added a link to the complete code for this post. https://github.com/tel/tel.github.io/tree/master/public/code/MutableImmutable/Part1 https://github.com/tel/tel.github.io/tree/master/public/code... Thus far there are no dependencies on outside libraries (though eventually I'll have to use `containers`) so you can just drop it into GHCi and play around!