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A tiny tiny CoreData revelation.
Following on from the previous discovery of all the useful debugging features, including the Build & Analyze feature and the Performance Tool stuff, the argument to debug core data has one problem. It doesn’t display your parameters. So change that … Continue reading
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More Objective-C cocoa gotchas.
Firstly… when you’re chopping and changing lots of files in and out (and using the refactoring functions to rename classes by highlighting the name and hitting apple-option-j) you can get linking errors of all sorts afterwards and strange crashes saying … Continue reading
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CoreData and to-many relationships.
I’ve had a problem with a category being able to reference many subjects but a subject only having one category. Kept getting a fault for the relationship. The error looked like this in the debugger: CoreData: annotation: to-many relationship fault … Continue reading
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Regular expression that checks for primes.
This via Noulakaz It might well be, but it’s a hack as it bombs at larger numbers: irb(main):001:0> def isp(n) irb(main):002:1> (“1” * n) !~ /^1?$|^(11+?)\1+$/ irb(main):003:1> end => nil irb(main):004:0> isp(55) => false irb(main):005:0> isp(57) => false irb(main):006:0> isp(101) … Continue reading
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How to populate CoreData at runtime from a remote source.
To me it seems that documentation on populating apple Core Data based stores is sorely lacking instructions on how to populate the database at runtime from remote sources. Most people electing to populate an SQL Lite database and then just … Continue reading
A little bit of this and that.
Quite a few things have vied for my attention this week. I ploughed through 2 books, namely The Girl who Played With Fire a book on Obj-C. I’m now reading The Girl who Kicked the Hornets Next and Living Next … Continue reading
Posted in Literature, Miscellany, Programming
Tagged games, iphone, OpenCV, Programming, reading
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A coding dilemma.
This happens quite a lot in programming I find. There’s the ideal way of doing something and the way you actually end up doing it, be it due to buggy libraries, quirks of code, time or inexperience. I found one … Continue reading
Progress Report
Integrated the rather excellent IASKAppSettings which solves my problem of trying to design a settings tab that looks like the auto generated ones that appear in the Settings diovan generic.app. I keep the data from that in a singleton which … Continue reading
3 days learning and we have an iPhone App!
It didn’t take anywhere near as long as I thought. I have two versions at the moment. One which doesn’t work and crashes a lot but has pretty graphics/labels and one which implements OpenCV stuff but is still using place … Continue reading
Posted in Programming
Tagged iphone, objective-c, XCode
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Setting up OpenCV for Xcode + iPhone
** This post will be updated as I progress ** *** This will be updated when I’ve actually got an application to the point where OpenCV is necessary. It currently links and builds fine but I haven’t tested it so … Continue reading
Posted in Programming
Tagged CMake, OpenCV, OSX, Snow Leopard, XCode
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