This previously said “hire me maybe”

Here's my CV, but I work for Serokell at the moment (among other things we're writing a Bitcoin analog for banks) and so probably won't agree to work for you right now. But hey, you can still write me and maybe in a year or so I'll be yours if you:

are awesomer
aren't awesomer but pay substantially more
or you offer relocation to some nice European country

Look at my Telegram channel

Here it is.

Some of the posts:

How discounts, loyalty cards and customer questionnaires only exists for the needs of the business, not because they're being nice
A long, multi-part rant about how bureaucracy has infected programming
A comparison of Haskell and guitar
An ELI5 explanation of list fusion in Haskell
An amazing lifehack
A theory of boundaries
An ad for Homestuck: in all games invertory is basically an array, what if it was some other data structure?
How people feel about cultural appropriation (and it makes sense)
Some night photos
App/site/project/etc ideas: one, two, three, four-five-six

Haskell

I'm teaching a bunch of people Haskell by giving them tasks to solve (and then we collectively discuss solutions). You can join too!

I've also written some libraries:

microlens, a small lens-compatible library for lenses. Should be useful for library writers and stuff.
ilist, a library with optimised index-related functions for lists – you don't need those often, but if you do, this library is probably the best place to get them.

I also started the /r/haskelltil subreddit (for Haskell tips and tricks and code samples and oddities and curiosities and idioms and interesting facts and everything that is short enough that you'd be ashamed to submit it to /r/haskell or write about it at your blog). It didn't catch on but some content there is still useful.

Finally, right now I'm busy working on Aelve Guide, a wiki-like guide to Haskell ecosystem and community. You can help.

lens over tea

A series of articles (called “lens over tea”) about lens and its implementation.

part 1 – lenses 101, traversals 101, a bit of implementation details (also lens operators, functor composition, Const, Identity, difference lists, monoids of endomorphisms under composition, default signatures for class methods, equality constraints, and irrefutable patterns).
part 2 – composition, laws, getters/actions/setters (also history of lenses, categories, the way to write lenses which would compose “normally”, some links to Reader/Writer/State learning materials, Void).
part 3 – folds (also Foldable, Apply, a nice trick for combining folds, and Fold1).
part 4 – isomorphisms, some profunctors, lens families (also Forget, Tagged, Proxy, a bit about pure profunctor lenses, existential types, algebra of types, and a cat video).
part 5 – prisms (also a recap of isomorphisms with diagrams, a bit about affine traversals, Pointed, and coerce).
part 6 – Template Haskell, aka “write your own makeLenses”

It's a work in progress; the future parts will mention:

indexed things
Bazaar/Magma/Molten/Mafic, traversal stuff like partsOf, taking
fusing and confusing
benchmarks (view _1 vs fst? how much does fusing help? etc)
vertical composition, link
ala, AlongsideLeft
upon, link
pure profunctor lenses and traversals, link 1, link 2, link 3, link 4, symmetric lenses ((g a -> f b) -> g s -> f t), link
Control.Lens.Plated, Control.Lens.Level, Control.Lens.Zoom

Other stuff

Racket

Several years ago I've been learning Racket and making notes (which then became somewhat popular):

Introduction. First three days, no prior knowledge, getting a feel for the syntax... You get the idea.
Macros, Macros and a Bit of Modules. Another three days. Mostly macros, as you could've guessed.

list of topics to cover. Gray because it can't be finished almost by definition.

I'm not learning Racket anymore, but I might start again in the future.

Stuff I did

This site. Yes, it runs on a couple of shell scripts, but I thought I'd explain them anyway.

Mindless compilations

Flattrs of Popular Software Projects.