Constraint-based layout for Scenic—a proof of concept

Patrick Tschorn wrote “Scenic is an Elixir UI framework intended for fixed-screen devices. In Scenic, UIs are constructed and updated by modifying a scene graph, i.e. a tree of graphical elements such as shapes, buttons and text fields. Elements are positioned on screen by specifying their x,y coordinates. In this post, I am going to present Jurby, a…”

Cassowary / Kiwi-Solver Elixir Port

Patrick Tschorn wrote “A large variety of 2d diagrams and UI layouts can be described declaratively using x,y-coordinates and spatial relations. These spatial relations, or ‘constraints’, can be expressed as systems of linear in-/equalities, which can be solved automatically by a linear constraint solver. Once the solver has assigned a concrete value to each variable in the system,…”

RabbitMQ Summit 2019

David Ireland wrote “As Oliver Wyman were platinum sponsors of this years’ RabbitMQ Summit, a group of us were in attendance to contribute and hear the latest news from today’s RabbitMQ users. Our own Alex Thomas gave a talk: Using the Source-oriented Exchanges Pattern to Keep Events in Order. Another talk I particularly enjoyed was Lifting the Lid…”

Does Agile Suck in some Cynefin domains?

Tim Band wrote “Here’s an article from Bertil Muth on freeCodeCamp on why Agile isn’t working at your company. This contains a lot of great, level-headed advice about how to excel at Agile—by which Bertil seems to mean ‘Scrum’. The assumption seems to be that Agile (which equals Scrum) is great for everyone! But is it? Might Agile…”

Fast Elixir Porter2 Stemmer

Patrick Tschorn wrote “Motivation: understand the Porter2 stemming algorithm and learn some Elixir On a recent project, my mission was to refine and substantially extend a prototype document classification system originally written by somebody else in Python. In order to keep the extended system small and understandable (i.e. maintainable by the original author), I implemented all but one of…”

Improving Life in Smaller, Heterogeneous Projects

James Uther wrote “A little while ago we were asked if we could do a talk on ‘developer experience’ at QCon. I volunteered. We were having lots of fun at the time building a CI/CD system out of Jenkins and Kubernetes, and using a bunch of hipster languages in the project and I thought I would be pulling…”

Sentiment Analysis of News Articles

Sunghun Jung wrote “What is sentiment analysis? Sentiment analysis, in a nutshell, is used to predict whether a text is negative, neutral, or positive about certain topic without having to read the full text. With the development of various Natural Language Processing (NLP) libraries, sentiment analysis has been an interesting area of exploration. So far, tweets and product…”

Padding Oracle Attack or the Virtues of a Glomar response

Rohit Aggarwal wrote “While working on the excellent CryptoPals challenges, I came across the Padding Oracle Attack. The particular version of the attack I was working through, was on CBC mode Decryption when used with AES symmetric key cryptography. The attack has nothing to do with AES and everything to do with this block cipher mode of operation. Various forms of…”

Setting up drone.io CI

Patrick Tschorn wrote “Drone.io for go I was recently asked to set up a CI server for one of our go projects and decided to try out drone.io 0.8. From my point of view, the two most attractive features of drone.io are that: the build is defined through a single .drone.yml file in the root directory of the…”

5 Whys considered harmful

Ian Rogers wrote “Adverse events happen – a website breaks down, a project doesn’t get delivered on time – and a  proposed technique to find ‘the root cause’ is to ask the “5 Whys”. Attributed to Sakichi Toyoda in the 1930’s and adopted by Toyota and other formal techniques it’s basically the technique of listing a fault and then asking…”

Just Enough Design

Ian Rogers wrote “On the one hand it’s become a bit of a cliché to say that Waterfall doesn’t work (in fact ‘waterfall’ may never have existed), but we know that rigid projects don’t deliver—when the level of resources is the only contingency in a project then budget overrun and missed deadlines (or lowered quality) become almost inevitable.…”

A basic recipe for an Elixir SSL server

Patrick Tschorn wrote “In this post, we’ll first try out Erlang’s SSL application interactively and then put together a simple Elixir SSL server OTP application using the Supervisor and GenServer behaviours. Preparation First of all, we’ll create a self-signed certificate: mkdir foo cd foo openssl genrsa -out key.pem 1024 openssl req -new -key key.pem -out request.pem # (using…”

Panegyric: showing off what we’ve done on Github

Tom Parker-Shemilt wrote “Last month, I said we’d be talking more about open source work that we’re doing. This month, I’ve been building Panegyric, a WordPress plugin (which is what this site is written in). This plugin (which isn’t live on the site yet, but will be soon) lists all the Github pull requests we’ve recently done. However…”

Choosing the right scaffold

Ceri Storey wrote “One thing I’ve come to realise as I’ve matured as a developer, is that it turns out I’m merely human. That is somewhat obvious, but you often hear people opine on various discussion boards that their particular tools (that other people feel are error prone) are actually just fine; as long as you remember to…”

GraphQL is really TreeQL and that’s OK

Ian Rogers wrote “Let’s have a look at GraphQL. It came out of Facebook as a replacement for REST style requests for querying data. It was initially developed from 2012 and made open source in 2015. As Facebook’s main database is the “social graph” it was naturally named GraphQL but, as we’ll see, that’s not a completely accurate…”

Making the dockers work

Ceri Storey wrote “Over the past few weeks I’ve been fo­cusing mostly on build and de­ploy­ment tooling around docker and Kuber­netes. One par­tic­ular down­side of the cur­rent sys­tem, is our ap­plic­a­tions have a fair number of ser­vice de­pend­en­cies. Up until now, we’ve taken to run­ning everything in­side docker using dock­er­-­com­pose, but this feels to me more like a way…”