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  • Keep your binary clean with MTOM XOP SOAP is an XML-based protocol, which means that all data inside the SOAP envelope must be text-based. If you want to include... More

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  • Demystify grammar There seems to be a perennial confusion with teaching the theory behind programming in universities. The program of most universities implies... More

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The Portable Document Format (PDF) is a well-known format popularized by Adobe. It purports to create a document that should render the same across platforms. Python has several...


Wrong kind of pie Raspberry Pi devices were developed in 2012 to help people learn to develop code. They sold 10 million Raspberry Pi devices in 2015. The device was originally intended...



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Design Patterns
Learn design patterns quickly with Jason McDonald's outstanding tutorial on the original 23 Gang of Four design patterns, including class diagrams, explanations, usage info, and real world examples.
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Core Java
Gives you an overview of key aspects of the Java language and references on the core library, commonly used tools, and Java 8 features.
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Getting Started With Git
Today, Git is effectively the de-facto standard for software version control, and it is truly an expected tool in every developer’s toolbox. This quick overview demonstrates what a rich and deep DVCS Git truly is, while still being approachable for the newcomer to this collaborative approach to source code and version control. Download this Refcard to learn about the essentials of getting started with Git like cloning existing projects, pushing Git commits to subversion, branching and merging, and more.
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Foundations of RESTful Architecture
The Representational State Transfer (REST) architectural style is a worldview that elevates information into a first-class element of architectures. REST allows us to achieve the architectural properties of performance, scalability, generality, simplicity, modifiability, and extensibility. This newly updated Refcard explains main HTTP verbs, describes response codes, and lists libraries and frameworks. It also gives additional resources to further explore each topic.
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Getting Started with Ajax
Introduces Ajax, a group interrelated techniques used in client-side web development for creating asynchronous web applications.
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Scrum is a framework that allows people to productively and creatively deliver products of the highest possible value. With over 70% of Agile teams using Scrum or Scrum hybrid, learn more about its benefits in managing complex product development. This newly updated Refcard explores the details of Scrum, including theory, values, roles, and events. It also includes a sample of a popular approach to deliver Integrated Increments in a scaled environment.
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Core Java Concurrency
This Refcard will help Java developers working with multi-threaded programs to understand core concurrency concepts and how to apply them. Overview the key aspects of the Java language and get references on the core library.
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Spring Configuration
Catalogs the XML elements available as of Spring 2.5 and highlights those most commonly used: a handy resource for Spring context configuration.
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Core CSS: Part I
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part one of three.
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jQuery Selectors
Introduces jQuery Selectors, which allow you to select and manipulate HTML elements as a group or as a single element in jQuery.
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Getting Started with Eclipse
Eclipse IDE is a cross-platform, multi-purpose, open-source Integrated Development Environment. It is widely used to develop projects in Java, JavaScript, PHP, C++, Scala, and many others. This newly updated Refcard breaks down installing, setting up, and getting started with Eclipse. It also covers productivity tips, creating new projects and files, accessing Source Control Managers, and debugging configurations.
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Core CSS: Part II
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part two of three.
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