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JSON: What It Is, How It Works, & How to Use It

JSON: What It Is, How It Works, & How to Use It
This week I want to cover a topic that I feel has become an important part of any developer’s toolkit: the ability to load and manipulate JSON feeds from other sites via AJAX. Many sites are sharing data using JSON in addition to RSS feeds nowadays, and with good reason: JSON feeds can be loaded asynchronously much more easily than XML/RSS. This article will cover the following: What is JSON? We’ll also use our newfound skills with JSON at the end of this project to build a quick app that loads photos from Flickr without requiring a page refresh. What Is JSON? JSON is short for JavaScript Object Notation, and is a way to store information in an organized, easy-to-access manner. Storing JSON Data As a simple example, information about me might be written in JSON as follows: This creates an object that we access using the variable jason. Storing JSON Data in Arrays Summary Related:  front-end

JSONLint - The JSON Validator. How to Find the Right Chart Type for your Numeric Data 22 Feb 2016 Charts help you visualize numeric data in a graphical format but the problem is there are just too many types of charts to choose from. This diagram will help you pick the right chart for your data type. couch mode print story Charts help you visualize numeric data in a graphical format but the problem is there are just too many types of charts to choose from. If you are finding it hard to pick the right chart type for your type of data, refer to chart chooser diagram. The poster, designed by Andrew Abela, is also available as a PDF. Related: Create Graphs Online with Google Charts You may also want to check out Chart Chooser – an online tools that lets you shortlist charts visually. Comments are closed but if you want to respond, please send me an email or tweet.

The Clean Architecture Over the last several years we’ve seen a whole range of ideas regarding the architecture of systems. These include: Hexagonal Architecture (a.k.a. Ports and Adapters) by Alistair Cockburn and adopted by Steve Freeman, and Nat Pryce in their wonderful book Growing Object Oriented Software Onion Architecture by Jeffrey Palermo Screaming Architecture from a blog of mine last year DCI from James Coplien, and Trygve Reenskaug. Though these architectures all vary somewhat in their details, they are very similar. Each of these architectures produce systems that are: Independent of Frameworks. The diagram at the top of this article is an attempt at integrating all these architectures into a single actionable idea. The Dependency Rule The concentric circles represent different areas of software. The overriding rule that makes this architecture work is The Dependency Rule. Entities Entities encapsulate Enterprise wide business rules. Use Cases Interface Adapters Frameworks and Drivers. Conclusion

JSON The JSON object contains methods for parsing JavaScript Object Notation (JSON) and converting values to JSON. It can't be called or constructed, and aside from its two method properties it has no interesting functionality of its own. DescriptionEdit JavaScript Object Notation JSON is a syntax for serializing objects, arrays, numbers, strings, booleans, and null. It is based upon JavaScript syntax but is distinct from it: some JavaScript is not JSON, and some JSON is not JavaScript. The full JSON syntax is as follows: JSON = null or true or false or JSONNumber or JSONString or JSONObject or JSONArray JSONNumber = - PositiveNumber or PositiveNumber PositiveNumber = DecimalNumber or DecimalNumber . Insignificant whitespace may be present anywhere except within a (numbers must contain no whitespace) or (where it is interpreted as the corresponding character in the string, or would cause an error). MethodsEdit JSON.parse() JSON.stringify() PolyfillEdit SpecificationsEdit Browser compatibilityEdit

ColorExplorer: Online Toolbox For Color Palettes Architecture Patterns Introduction | US Treasury Architecture Development Guidance (TADG) | IBM Patterns for e-Business | Some Pattern Resources This chapter provides guidelines for using architecture patterns. Introduction Patterns for system architecting are very much in their infancy. They have been introduced into TOGAF essentially to draw them to the attention of the systems architecture community as an emerging important resource, and as a placeholder for hopefully more rigorous descriptions and references to more plentiful resources in future versions of TOGAF. They have not (as yet) been integrated into TOGAF. Background A "pattern" has been defined as: "an idea that has been useful in one practical context and will probably be useful in others" [Analysis Patterns - Reusable Object Models]. In TOGAF, patterns are considered to be a way of putting building blocks into context; for example, to describe a re-usable solution to a problem. Content of a Pattern Name Problem Context Forces Solution Resulting Context

JSON HEX 2 RGBA Color Calculator | by @Devoth Design Patterns In software engineering, a design pattern is a general repeatable solution to a commonly occurring problem in software design. A design pattern isn't a finished design that can be transformed directly into code. It is a description or template for how to solve a problem that can be used in many different situations. Uses of Design Patterns Design patterns can speed up the development process by providing tested, proven development paradigms. Effective software design requires considering issues that may not become visible until later in the implementation. Often, people only understand how to apply certain software design techniques to certain problems. In addition, patterns allow developers to communicate using well-known, well understood names for software interactions. Creational design patterns These design patterns are all about class instantiation. Structural design patterns These design patterns are all about Class and Object composition. Behavioral design patterns Criticism Read next

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