pufuwozu

Joined 17 years ago

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3,196

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349

Member since

Mar 18

http://www.hackernewsers.com/users/pufuwozu.html

Brian McKenna

http://brianmckenna.org/

http://twitter.com/puffnfresh

Senior R&D Engineer at Precog.

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Recent submissions

Comment · 3 years ago

The article has nothing to do with Haskell, other than it's what I use. Why should I have to justify that when I want to talk about architecture diagrams?

Would the same expectation be in place of my examples were in JavaScript? I doubt it.

Comment · 3 years ago

Oh are you intimately familiar with Atlassian's systems?

Marketplace is Atlassian Marketplace, a real website, REST API and bunch of frontend components. If it's not part of an architecture, what is it?

I did simplify Commerce, the system is Atlassian Commerce Cloud Platform. I apologise that I simplified the name for an example, which has confused you.

Comment · 3 years ago

I've used it a bunch. It's pretty good! I think the Java API could use more types and less mutation but it works well.

Comment · 3 years ago

I don't often show architecture diagrams to non technical people BUT I also definitely don't show most technical people this Haskell code. I also don't show them the PlantUML.

I show them the png image.

Comment · 3 years ago

Atlassian Marketplace's architecture diagrams change constantly. Altassian replaces a core system, we have to integrate with a new one, we rewrite or replace a system.

Did you read the part about generating diagrams from different things, e.g. service descriptors, service proxies, tests?

Comment · 3 years ago

I didn't mention it, but I do write architecture diagrams which have input.

    data Version = Current | Future

    generate :: Version -> Diagram

Implementation uses a few if/else expressions. Really simple.

The final points of the post was that we should be able to generate architecture diagrams from other code. Parsing a service descriptor, generating them from tests, etc. You DO need a programming language.

Comment · 12 years ago

Hey everyone, I'm the creator!

Sorry for the problems - I was hotlinking to the awesome http://rawgit.com/ website during development and forgot to remove it before posting it on Twitter.

The website should be fixed in just a few seconds. Thanks for trying it out!

Comment · 13 years ago

No processing necessary. Just upload JSON.

The Quirrel language is much more high level than the API for ElasticSearch. It comes with things like machine learning (e.g. clustering and linear regression):

http://precog.com/developers/how-tos/machine-learning/

Even without libraries like machine learning, you can write somewhat readable queries which do some impressive things:

http://precog.com/developers/how-tos/common-analytics/

Comment · 13 years ago

I worked on Precog. Here's my explanation:

It's an analytics platform for big data. Basically, you upload lots of JSON, use the custom language (http://quirrel-lang.org/) for analytical queries and the platform will handle efficient storage and querying of your data.

There are also has extras like a library for charting and reporting query responses using JavaScript and an IDE for writing Quirrel and uploading data.

Comment · 13 years ago

TDD increases the chance that more people will mock

Absolutely false. Try TDD in Haskell. Know how many mocking libraries there are in Haskell? None. Totally unnecessary.

Comment · 13 years ago

It's too slow. Now what?

You have to use asymptotic analysis to figure out that it's O(n^3) but can actually be performed in O(n) - then write the derived code from your analysis. Nothing has changed.

Customers care; transitively.

Comment · 13 years ago

Author here. I use Haskell for a lot of webapps. Here's a webapp that talks to GitHub:

http://licentious.herokuapp.com/

https://github.com/pufuwozu/licentious

Here's a programming language competition that I organise:

http://www.pltgames.com/

The web framework that I use is Yesod. Over the years I've used CakePHP, Django, Rails, Lift and Play! - Yesod is definitely the BEST framework I've used:

http://www.yesodweb.com/

Comment · 13 years ago

Did you read the conclusion of TFA?

> Analysis is the method for writing code that satisfies our constraints. Neither TDD nor types are the single answer to writing code that does what we want.

Comment · 13 years ago

Author here. Sadly our WordPress didn't have caching enabled so here's a Gist of the content:

https://gist.github.com/pufuwozu/5095510