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RailsApps · Open Source Ruby on Rails Example Applications
The RailsApps open source project offers starter applications and tutorials for Rails developers. All code explained in the Capstone Rails Tutorials. Generate the applications with the Rails Composer tool. Learn Ruby on Rails Get the book that is called "The best Rails book for beginners." See the 5 star reviews on Amazon. Learn how to get it FREE.
Instructure | Educational Software Development
The hub of your digital classroom that serves as the foundation for teaching and learning.
git の運用指針 - Cube Lilac
ソフトウェア開発に関しては、これまでほぼ一人で完結していた*1ので git の運用方法もかなり適当だったのですが（ただのコミットマシーン状態）、今回、同一プロジェクトに対して複数人でコミットしていく形になっているので、その状態だとやはりまずいなと言う気がしてきました。ググっていると「なるほど」と思う記事もたくさんあったので、それらの記事を元に自分のプロジェクトの「git の運用指針」を情報共有のために記載しておこうと思います。 前提 まず始めに、現在のプロジェクトの状況は下記のようになっています。 開発は 1 人のメインコミッタ（私）と数人のサポートコミッタ（アルバイト等）で行われる メインコミッタはフルタイム、サポートコミッタは週に数時間〜10時間程度の勤務形態 サポートコミッタに対しては、基本的に 1 機能（1 チケット）を 1 人で完結するように作業を配分するが、時間的な兼ね合いもあ
Why is subtracting these two epoch-milli Times (in year 1927) giving a strange result?
If I run the following program, which parses two date strings referencing times 1 second apart and compares them: public static void main(String[] args) throws ParseException { SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String str3 = "1927-12-31 23:54:07"; String str4 = "1927-12-31 23:54:08"; Date sDt3 = sf.parse(str3); Date sDt4 = sf.parse(str4); long ld3 = sDt3.getTime()
Java 8 Optional Objects | Informatech CR Blog
In this post I present several examples of the new Optional objects in Java 8 and I make comparisons with similar approaches in other programming languages, particularly the functional programming language SML and the JVM-based programming language Ceylon, this latter currently under development by Red Hat. About the Type of Null In Java we use a reference type to gain access to an object, and wh
Approach: Building a toy template engine in Python | Alex Michael
If you wish to dive straight into the code, then Github is your friend. Language design Our language is pretty basic. We will have two types of tags, variables and blocks. 1 2 3 4 5 6 7<!-- variables are surrounded by `{{` and `}}` --> <div>{{my_var}}</div> <!-- blocks are surrounded by `{%` and `%}` --> {% each items %} <div>{{it}}</div> {% end %} Most blocks need to be closed as in the example a
他の言語を学んで自由になろう
1 kazu@iij.ad.jp 2 3 Paul Graham 4 Andrew Hunt and David Thomas 5 6 Java 7 Java Java Java 3 8 Haskell Scala Scala 9 10 Java Java Dean Wampler AWT ActionListener public interface ActionListener extends EventListener { public void actionPerformed(ActionEvent e); } 11 AWT ActionListener import java.awt.*; import java.awt.event.*; class ButtonApp { private final Button button = new Button(); public Bu
Ruby 2.0 Works Hard So You Can Be Lazy - Pat Shaughnessy
Lazy enumeration isn’t magic; it’s just a matter of hard work Ruby 2.0’s new lazy enumerator feature seems like magic. In case you haven’t tried it yet, it allows you to iterate over an infinite series of values and take just the values you want. It brings the functional programming concept of lazy evaluation to Ruby - at least for enumerations. For example, in Ruby 1.9 and earlier you would run i
Using rbenv to Manage Rubies and Gems
We recently switched from RVM to rbenv for managing Ruby versions. “Make each program do one thing well.” - Tenet #2 of The UNIX Philosophy Why consider switching to rbenv The UNIX philosophy espouses an approach to software in which small, sharp tools are designed and used to address discrete needs. By this standard, RVM simply does too much. RVM is responsible not only for changing Ruby versions
Scala School
Other Languages: 한국어 Русский 简体中文 About Scala school started as a series of lectures at Twitter to prepare experienced engineers to be productive Scala programmers. Scala is a relatively new language, but draws on many familiar concepts. Thus, these lectures assumed the audience knew the concepts and showed how to use them in Scala. We found this an effective way of getting new engineers up to spe
TypeScript0.9alphaをNode+Gruntで使うよ
Swift is the best programming language you should learn and make your dream app easily. Swift programming is a powerful yet easy-to-learn coding language created by Apple. It's frequently used for developing iOS and macOS applications, as well as tvOS and watchOS apps. While you can use other languages to create Apple apps, Swift is the preferred language, and it's recommended because its code is
WordBench Osaka 春の大翻訳祭り
WordPressの多言語プラグイン「qTranslate」で、あなたのサイトも世界にデビュー♪
Counting Clusters - Edwin Chen's Blog
Given a set of datapoints, we often want to know how many clusters the datapoints form. The gap statistic and the prediction strength are two practical algorithms for choosing the number of clusters. Gap Statistic The gap statistic algorithm works as follows: For each i from 1 up to some maximum number of clusters, Run a k-means algorithm on the original dataset to find i clusters, and sum the dis
はてなグループの終了日を2020年1月31日(金)に決定しました - はてなの告知
はてなグループの終了日を2020年1月31日(金)に決定しました 以下のエントリの通り、今年末を目処にはてなグループを終了予定である旨をお知らせしておりました。 2019年末を目処に、はてなグループの提供を終了する予定です - はてなグループ日記 このたび、正式に終了日を決定いたしましたので、以下の通りご確認ください。 終了日: 2020年1月31日(金) エクスポート希望申請期限:2020年1月31日(金) 終了日以降は、はてなグループの閲覧および投稿は行えません。日記のエクスポートが必要な方は以下の記事にしたがって手続きをしてください。 はてなグループに投稿された日記データのエクスポートについて - はてなグループ日記 ご利用のみなさまにはご迷惑をおかけいたしますが、どうぞよろしくお願いいたします。 2020-06-25 追記 はてなグループ日記のエクスポートデータは2020年2月28
Clustering a Malware Corpus
It is not uncommon for security researchers and anti virus companies to deal with malicious corpus on a regular basis. Most of the corpus is usually unlabelled or sometimes given generic labels (or even mislabeled!). It will be interesting/useful to quickly cluster similar samples within the corpus as a pre-processing step before further analysis. Finding clusters within the corpus scan have many
C++: Custom memory allocation
Fast memory allocations along with memory leak detection can have a big impact on games performance. C++ provides two well known functions to allocate dynamic (heap) memory (malloc and new), these functions are usually very slow because they're general purpose functions and in some implementations require a context-switch from user mode into kernel mode. These functions also do not provide any kin
Intersection Math & Algorithms - Learn to Derive
One of the most important group of algorithms inside game engines are intersection algorithms. Even though there are plenty of sites showing code for intersection algorithms, there are only a few describing the math backround behind this, and algorithm derivation. To understand this article you need to know just a bit about linear algebra. Primitive description Let's start with a mathematical desc
Disassembling, Decompiling and Modifying executables
Motivation for writing As professional developers, we create products. We implement ideas, which are usually driven from some business craving for acceptance in the global market, from their target group. We try to deliver elegant, fast and reliable solutions and, quite honestly, we hate when someone use our work without at least saying "thanks, you've really made a great thing". That is why we ne
Internal radiocesium contamination of adults and children in Fukushima 7 to 20 months after the Fukushima NPP accident as measured by extensive whole-body-counter surveys
The Fukushima Dai-ichi NPP accident contaminated the soil of densely-populated regions in Fukushima Prefecture with radioactive cesium, which poses significant risks of internal and external exposure to the residents. If we apply the knowledge of post-Chernobyl accident studies, internal exposures in excess of a few mSv/y would be expected to be frequent in Fukushima. Extensive whole-body-counter
Python Courses & Screencasts – Real Python
Python Video Courses Gain practical, real-world Python skills with our library of Python video courses. Our tutorials are created, curated, and vetted by a community of expert Pythonistas. At Real Python you'll get the trusted resources you need on your path to Python mastery. With new content published weekly, you'll always find something new to boost your programming skills. You can mark individ
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ActiveRecord::Base.default_timezone の初期値 - Qiita
GitHub - pasberth/necromancy: 屍術/Necromancy conjures up the functional code.
The Bitcoin Report 2.pdf
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楽譜 Henri Challan / 380 Basses et chants donnés - Volume 6 : Ensemble des accords et Altérations - 6B Eléments de réalisation - di-arezzo 輸入楽譜
http://www.cs.cmu.edu/~tom7/mario/
Real world Pandas: Binning and Grouping | wrobstory.github.io
Optimising convolution filters
Thanks to Olle Fredriksson
https://rubysource.com/rubys-missing-data-structure/
GitHub - harthur/kittydar: Face detection for cats in JavaScript - demo for TXJS 2012 talk
翻訳: ”命令型のコールバック、関数型のプロミス: Node が逸した最大の機会” by James Coglan