Cocoa supports something call Selectors
// SEL is a type
// Here we create an instance of sell representing 'someMethod'
SEL sel = @selector(someMethod:)
// See if some object responds to this
if ( [obj respondsToSelector:sel] ) {
// Now invoke the selector (the method, if you will)
[obj performSelector:sel withObject:self]
}
Sunday, July 5, 2009
Objective C has Dynamic Typing
Commonly:
NSString *charlieBrownAuthor = @"Charles Schultz";
NSLog(charlieBrownAuthor);
But Dynamically:
id nm = @"Funky Chicken";
NSLog(nm);
Apparently all type checking is done at compile time. (not run time)
NSString *charlieBrownAuthor = @"Charles Schultz";
NSLog(charlieBrownAuthor);
But Dynamically:
id nm = @"Funky Chicken";
NSLog(nm);
Apparently all type checking is done at compile time. (not run time)
Friday, July 3, 2009
XCode
Learning about the XCode development environment for Mac OS X has been an interesting process.
I currently have XCode Version 3.1.2
There is a lot to learn. Tons of configuration capabilities that give the environment a lot of power...and a lot of complexity.
Coming from the Eclipse/Java world it is clear that we're not in Kansas any more :-)
One thing that I find interesting is the search mechanism in XCode. It is tightly bound to Mac OS X's Spotlight feature. So if you need to search for something it must be on a drive that has been indexed by Spotlight. If it is on a mounted drive you'll want to let Spotlight know about it by using the mdutil utility:
> sudo mdutil -i on /Volumes/<volume_name>
Thursday, July 2, 2009
Tethering your iPhone
http://www.gadgetreview.com/2009/06/gadget-how-to-iphone-tethering-without-jailbreaking.html
NOTE: THIS POST POSTED BY TETHERED iPhone!
From the Apple Byte podcast, Brian Tong says:
- http://help.benm.at/help.php
- Scroll down to tethering and internet settings
- Press on the Download link
- Select your country (U.S.A.)
- Select your carrier (at&t)
- You'll come to a page with an Install button
- Then go to the home screen
- Go to Settings
- Go to General
- Go to Network
- Now you'll see an Internet Tethering Option
- To activate - turn it on (either Bluetooth or USB)
- Connect USB between iPhone and Mac
- Network will automatically be detected
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