Start Developing iOS Apps Today: Introduction. Start Developing iOS Apps Today is the perfect starting point for creating apps that run on iPad, iPhone, and iPod touch. View this guide’s four short modules as a gentle introduction to building your first app—including the tools you need and the major concepts and best practices that will ease your path. The first three modules end with a tutorial, where you’ll implement what you’ve learned. At the end of the last tutorial, you’ll have created a simple to-do list app. After you build your first app and before you start your next endeavor, read the fourth module.
Even though it takes you through every step of building a simple app, to benefit most from this guide, it helps to be acquainted with computer programming in general and with object-oriented programming in particular. Get the Tools Before you start developing great apps, set up a development environment to work in and make sure you have the right tools. To develop iOS apps, you need: To download the latest version of Xcode. Sparse files – what, why, and how « UNIX Administratosphere. Sparse files are basically just like any other file except that blocks that only contain zeros (i.e., nothing) are not actually stored on disk. This means you can have an apparently 16G file – with 16G of “data” – only taking up 1G of space on disk.
This can be particularly useful in situations where the full disk may never be completely used. One such situation would be virtual machines. If a virtual machine never fills the disk entirely, then a certain amount of the disk will never have anything but zeros in it – permitting the saving of disk space by using a sparse file. The operating system (which supports sparse files) knows that the block “exists” but is null, so it provides the zero-filled block out of thin air.
There are problems with using sparse files. Another problem is that everything about disk management is based on how many sectors or blocks are used – and the disk size reported for a sparse file is the full size of the file (not the actual number of blocks on disk). Learn Web Design, Web Development, and iOS Development - Treehouse. Path menu in pure CSS3. Learn to Code: The Full Beginner's Guide. Programmer 101: Teach Yourself How to Code. Lecture 1 | Programming Methodology (Stanford) Nick Farina - An iOS Developer Takes on Android. Recently, we released the Android version of Meridian, our platform for building location-based apps. We didn’t use one of these “Cross Platform!” Tools like Titanium. We wrote it, from scratch, in Java, like you do in Android. We decided it was important to keep the native stuff native, and to respect each platform’s conventions as much as possible.
Some conventions are easy to follow, like putting our tabs on the top. Other conventions go deep into the Android Way, like handling Intents, closing old Activities, implementing Search Providers, and being strict about references to help the garbage collector. Now, our platform leverages HTML5 (buzzword, sorry) in many places for branding and content display, so we got a fair amount of UI for free. So, we rolled up our sleeves, downloaded the Android SDK, and got to work. Development Environment Apple has made it pretty easy to start writing iOS apps.
Android is a bit more involved. You’re going to just hate Eclipse. The Java Language Debugging. Chosen - a javascript plug-in for jQuery and Prototype - makes select boxes better. Chosen is a jQuery plugin that makes long, unwieldy select boxes much more user-friendly.
Downloads Project Source Contribute Standard Select Turns This Into This Multiple Select <optgroup> Support Single Select with Groups Multiple Select with Groups Selected and Disabled Support Chosen automatically highlights selected options and removes disabled options. Single Select Multiple Select Hide Search on Single Select The disable_search_threshold option can be specified to hide the search input on single selects if there are n or fewer options. Default Text Support Chosen automatically sets the default field text ("Choose a country... ") by reading the select element's data-placeholder value.
Note: on single selects, the first element is assumed to be selected by the browser. No Results Text Support Setting the "No results" search text is as easy as passing an option when you create Chosen: Limit Selected Options in Multiselect You can easily limit how many options the user can select: Right-to-Left Support. Architecture - How do I create my own programming language and a compiler for it - Programmers - Stack Exchange.