A View is a map that contains a specification of the visual component tree, the domain data, a mapping between both, validation rules and validation results (for more details see the Concepts section). This data represents the state of a UI form. Each view has it's own events channel. For each view, one process is started using the run-view function, which processes events for that view. "Event pr
Software design, functional programming, and software engineering practices Summary: Elm is an exciting FRP language. I implemented the FRP part in Clojure using core.async. I like to read research papers. I have ever since I was in high school. I've always wanted it to be pretty easy to just translate the pseudocode for an algorithm for a paper and then have it working without any trouble. Of cou
It’s a common attitude that functional languages with immutable collection semantics, such as Clojure, are for a) pretentious language geeks, or b) actual genius programmers. I’m in no position to defend against point a) given the body of my writing on this blog, so today I’d like to write an article about point b). I’m not such a clever guy. I struggle a lot with mundane programming tasks, every
Software design, functional programming, and software engineering practices Summary: Clojure has been successfully adopted by many companies. There are many resources available by people who did the hard work of introducing Clojure to their team. Do you want to get paid to write Clojure? Let's face it. Clojure is fun, productive, and more concise than many languages. And probably more concise than
Sinatra, the Ruby microframework. What were you thinking?Clojure has an approachability problem. In part, this is due to the relatively unusual syntax, but that can’t get all the credit. When it comes to building server-side web applications, a major sticking point is the “lack of frameworks” problem, and more to the point, the common Clojurian’s response: “Clojure users prefer to assemble their o
ZOZO創設者の前澤社長が９日にツイートした記事が話題になっています。 ひとり親家族を支援することを発表したのです。 どんな支援をするかなど、現時点でわかっている情報をまとめてみ…
css-parser.md Parsing CSS file with monadic parser in Clojure Inspired by "Parsing CSS with Parsec". Just quick notes and code that you can play with in REPL. By @kachayev 0. Intro What do we have? .container h1 { color: rgba(255, 0, 0, 0.9); font-size: 24px; font-family: Monaco; } What do we want to get? {:selector ".container h1", :rules ({:key "color", :value "rgba(255, 0, 0, 0.9)"} {:key "font
An idiosyncratic tour of the best of Structure and Interpretation of Computer Programs in Clojure
Tuning Clojure - Experiences from a 45x performance improvement This is a blog about the development of Yeller, The Exception Tracker with Answers Read more about Yeller here Recently, I added an automated diagnosis feature to Yeller. This feature has various pieces, many of which don’t impact performance. However, there was one place, where adding this feature impacted performance quite significa
This is the first post in a group of tutorials on deploying Clojure applications on various cloud platforms. All posts in the series: Part 1: Google App Engine Part 2: Heroku Google App Engine (GAE) was one of the first successful PaaS solutions. It is a battle tested platfom for building and deploying applications to the cloud. Currently App Engine provides officials SDKs for Python, PHP, Go and
What if creating a database would be as cheap as creating a Hashmap? An immutable in-memory database and Datalog query engine in Clojure and ClojureScript. DataScript is meant to run inside the browser. It is cheap to create, quick to query and ephemeral. You create a database on page load, put some data in it, track changes, do queries and forget about it when the user closes the page. DataScript
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Types of `map` function in Haskell, Scala, and Clojure