inactive
I’ve posted about working in Rhomobile to develop for embedded platforms. This work has been progressing and we’re seeing the platform mature as developers are pushing its limits. This is a platform that has code snippets that look like rails. An entire page for listing several firefighter rotations for example can be as simple as:… →
If you see a message like “The version of iPhone OS on (your phone’s name) does not match any of the versions of iPhone OS supported for development with this copy of Xcode” after the 3.0.1 update, the quick fix is to run in a shell: sudo ln -sf 3.0 (7A341) /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0.1 And then restart… →
I’m very impressed so far with nuevasync.com for their over-the-air calendar synchronization. They have free and pay options. You set them up as an MS Exchange server data source and your contacts and calendar are synchronized with google. I love being able to edit calendar items with a full keyboard and also keep my existing… →
Rhomobile provides great instant gratification in building applications. See my last article for a starter. There are some elements you’ll miss as you start to work on the iPhone target. The back button is one and the custom tab bar is another. The main bar can currently be customized by building rhodes from source (the… →
XML is often used to convey very large data sets. A perfect example is wikipedia’s data. The full wikipedia datasets are available in several different slices. This dataset is about 24GB uncompressed for all articles in English. This is an excellent set to push the limits on your parser. Clearly, you can’t load a file… →
We’ve been evaluating the Rhodes platform, aka Rhomobile, as a way to deliver multiplatform applications to our customers. Version 1.2.1 was recently released. One thing that is clear right away is the development platform problem. Develop on OSX if you need to work on iPhone and Android ports. Use Windows if you plan to release… →
You see an error like this in your logs: ActiveRecord::StatementInvalid (SQLite3::SQLException: SQL logic error or missing database: INSERT INTO…). The statement it prints out is working fine when you run it directly. First, one thing you can tell from this error is you are running the application using a different user id than you are… →
I have multiple phones and as a mobile developer I end up switching sim cards between phones often. This is tricky with iPhone since it has a carrier that requires the use of something like a paperclip to release it. It is a slick design and helps maintain the slick profile, but it can be… →
We are working on a very interesting project right now that allows us to adapt RadiantCMS to serve several different functions in a big picture system. Radiant is a powerful content management system that has very good design for factoring out redundancy in your web content. Think of the Don’t-Repeat-Yourself principle applied to the web… →
The best title had to be When to Tell Your Kids About Client Caching. Parents might identify more with this. Interesting stuff in any case.
Railsconf had several performance-related talks. This one went over a lot of interesting territory. Who knew the Date class performed so badly?? Use equivalent ops in Time or get date::performance Use String::<< instead of String::+= Tune your custom sql with virtual attributes It’s surprising that things we might not think are performance issues are problematic… →
During his talk at railsconf, Gregg Pollack showed off Jetbrains Rubymine, an awesome IDE for ruby & rails. I wouldn’t be surprised to find out Jetbrains had a spike in their downloads coinciding with the talk. It is a nice IDE. I was happy to see it includes git support out of the box (I… →
I have a few suggestions for developers using bleeding edge systems on iPhone. 1. The OS will expire. Be sure you update to the latest available system before you, say, go out of town to Railsconf. We’ve been warned you don’t use OS3 on a production phone, but that’s easy advice to ignore when things… →
After upgrading to iPhone SDK 3.0 beta3, I found all my Xcode projects only had two build options remaining: iPhone OS 3 Device and iPhone OS 3 Simulator. I still need to build for multiple systems to test all the custom iPhone development we do at Surgeworks, but I also need iPhone OS 3.0 so… →
On a recent project that needed to keep data in sqlite, I experimented with an implementation of ActiveRecord and also sqlitepersistentobjects. I had passed up a few others that were too complicated or licensed under something like the GPL that prevented commercial work. While the ActiveRecord author has to get an award for the quickest… →