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  How to write your own DSL in Ruby

DSL(Domain Specific Language) is a language defined to fulfill some domain specific requirements to ease people's work. It can be used to define attributes and actions of a domain easily and cleanly. And it is often created based on some common observations or micro patterns of some domain. In Ruby world, there are quite a few places people can find DSL. For example, Ruby itself, Chef recipes. To create a class in Ruby, the traditional OOP way would look like. class User @name = nil @email =...

   RUBY,DSL,TUTORIAL     2017-03-04 09:40:34

  Guest Post from a CodeBoy: The Five Stages of Debugging

Being confronted with a serious and difficult-to-diagnose bug can be one of the most traumatic and stressful experiences of a professional programmer's career. Those who have been through such an ordeal rate the stress as on a par with that accompanying serious injury, divorce, or the death of a family member. Researchers who have studied the psychology of computer programming have lately constructed a framework to understand the stages through which the programmer's mind progresses as she...

   Debug,Steps,Stages     2012-05-01 06:39:38

  Where Have You Installed Your Python Packages?

Preface I am writing this article because I recently noticed in the Python community that there are several frequently asked questions: Why does running the command after installing pip result in a "executable not found" error? Why does importing a module result in a "ModuleNotFound" error? Why can I run my code in PyCharm, but it doesn't work in the command prompt? Rather than just providing solutions, it is better to teach people how to fish. To address these types of issues, you need to und...

   PYTHON,PATH,PATH_PREFIX,PACKAGE LOCATION     2023-12-17 01:03:45

  Guide to use Compass

Sass is one kind of CSS Preprocessor, it can make CSS development simple and maintainable. But to show its real power we may need to have Compass. This article is to introduce Compass. Once you learn Compass, your CSS development efficiency will be largely improved. Here we assume you have mastered the major uses of CSS, if you know Sass, then it's better. It's still ok if you don't know Sass. 1. What is Compass? In simple, Compass it the toolkit of Sass. Sass itself is only a compiler, Compass...

   Compass,CSS,Sass,Tutorial     2012-12-03 13:35:46

  Unfortunate Python

Python is a wonderful language, but some parts should really have bright WARNING signs all over them. There are features that just can't be used safely and others are that are useful but people tend to use in the wrong ways. This is a rough transcript of the talk I gave at my local Python group on November 15, with some of the audience feed back mixed in. Most of this came from hanging around the Python IRC channel, something I highly recommend. [update 2011-12-19: improved "array" cr...

   Python,Defects,Deprecated methods,Warning     2011-12-20 08:27:36

  Why Lua

In this article, I would like to discuss why you should use Lua. This all started with a message that recently popped up on the Lua mailing list regarding why isn't Lua more widely used? The answers went from randomness to lack of libraries to a variety of other things, but the one that resonated with me most was that there are fewer people who enjoy the do it yourself approach, which Lua fully embraces. I've come to think of Lua as the Arch Linux of programming languages. Which, almost by d...

   Lua,Feature,C,Simple,Portable     2012-02-27 04:58:15

  What has Google done on improving programming languages

Google is now becoming the most innovative IT company in the world. Every now and then they would deliver one revolutionary product to us such as Google Glass, Google Fiber, Automatic Mobile Cars etc. All these great products are backed up by the powerful software system built into. Google has used many programming languages to develop these software and they have put much resource in improving the programming languages they use and we use today. What has Google done in improving programming lan...

   Google,Programming     2014-02-21 09:36:34

  What’s making Drupal gain momentum among government organizations?

Drupal has come up as a big splash in the world of Website development. Whether it’s an informative website or an e-commerce store, Drupal has been successfully utilized for meeting customized web requirements. It’s not surprising to find entrepreneurs, hailing from different business verticals, choosing Drupal for powering their websites. Joining this group of elite Drupal users are the representatives of government organizations. The noticeable popularity of Drupal has indeed made ...

   Drupal     2014-03-12 08:15:43

  Lessons Learned while Introducing a New Programming Language

I've used a lot of languages (professionally) over the years: (off the top of my head) Cold Fusion, HTML, Javascript, php, SQL, CSS, ASP(classic & .net), C#, Ruby, Flex, Java, & Clojure. Each language has pros and cons. Being a programmer, it's easiest to discuss the cons - and in general I believe it was best said:I hate all programming languages - Matt FoemmelI think it's important to start with this in mind. At some point you're going to hate what you're advocating, so imagine h...

   Experience,New language,Tips,Risk     2012-03-05 05:13:59

  Learning Is More Important Than Knowing

Although DuckDuckGo's success is based more on ideology than technology, you'd have to be a pretty arrogant technologist to not appreciate and be impressed with what this small team (for a long time, 1 person) has accomplished. And while DuckDuckGo teaches us a number of valuable lessons (about business, and privacy), to me, the most important, is that good programmers should be measured by what they can learn, not what they already know. Gabriel Weinberg, DuckDuckGo's creator, has been wo...

   Learning,Knowing,Google,DuckDuckGo     2012-04-18 07:17:53

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