「アプリケーションエンジニアが知るべきDNSの基本」というタイトルで、builderscon tokyo 2018 で登壇するスライドです
In two previous posts – Replace Data Value with Object and So Long Value, Hello Reference – I illustrated ways of replacing string method parameters with something more useful: Value Objects and Reference Objects. The motivation for these refactorings was pretty simple – strings are useless when it comes to storing application logic and objects are easy to create. This week it’s time to look at Ar
Keeping your code clean and organized while developing a large Rails application can be quite a challenge, even for an experienced developer. Fortunately, there is a whole category of gems that make this job much easier. For most people, dead/inefficient code will build up over time. Others will find themselves in a similar predicament when they take over someone else’s project. Actually, my own e
RubyKaigi 2014 talk. Points for *practical* use of metaprogramming in Ruby.
The H Factor of a media-type is a measurement of the level of hypermedia support and sophistication of a media-type. H Factor values can be used to compare and contrast media types in order to aid in selecting the proper media-type(s) for your implementation. H-Factor values are made up of two parts, each with their own set of factors: [MCA: Is this a complete list? overkill?] Link Support [LE]Emb
React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable and easier to debug. Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is writ
There have been many different ways to organize the code for a rich client system. Here I discuss a selection of those that I feel have been the most influential and introduce how they relate to the patterns. 18 July 2006 This is part of the Further Enterprise Application Architecture development writing that I was doing in the mid 2000’s. Sadly too many other things have claimed my attention sinc
This post will show a fast and easy way to add search to your Rails application. We will use Elasticsearch, an open source search engine, and Searchkick, an easy-to-use gem that integrates Elasticsearch with Rails. Installing Elasticsearch To get started, you need to install Elasticsearch. Mac users can use Homebrew for that - simply run brew install elasticsearch and follow the instructions. Alte
Sinatra Best Practices: Part One Erin Swenson-Healey · June 24th, 2013 While Sinatra’s one-file approach may work well for your one-off, smaller application – it can quickly become a mess as you add on multiple routes, route-handlers, helpers, and configuration. So what’s a programmer to do? In reading Sinatra’s documentation I’ve found a few morsels that have enabled us to split our otherwise-mon
Written April 17, 2013 updated: May 20, 2013 Here's a simple value: And we know how to apply a function to this value: Simple enough. Lets extend this by saying that any value can be in a context. For now you can think of a context as a box that you can put a value in: Now when you apply a function to this value, you'll get different results depending on the context. This is the idea that Functors
We are transforming education, training, and scholarship through data science, open source software, and modern web technologies. What We Do Since 2009, Eldarion® has built over 100 web applications solving problems for a wide variety of clients. In the last few years, we have partnered with leading institutions, state governments, and startups, to design and build innovative, world-class solution
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Monitoring Agent¶ The Amon Agent is a small piece of software that runs on your hosts. Its job is to collect metrics and bring them to Amon so that you can do something useful with your monitoring and performance data. These pages describe how to configure and run the Amon agent Installing the agent Agent configuration Running the agent Testing the agent Manual install Plugins¶ These pages describ
Updated for iOS 5. Tools and APIs required to build applications for the iPhone and iPad platform using the iOS SDK. User interface designs for mobile devices and unique user interactions using multi-touch technologies. Object-oriented design using model-view-controller paradigm, memory management, Objective-C programming language. Other topics include: object-oriented database API, animation, mul
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