Using blocks on Objective-C, especially NSArray indexOfObjectWithOptions:passingTest:

Just recording a bunch of links when I need to deal with this topic again.

Blogs:

• http://cocoasamurai.blogspot.com/2009/09/guide-to-blocks-grand-central-dispatch.html
• http://www.fieryrobot.com/blog/2010/06/20/being-a-blockhead/

Apple:

• http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html
• http://developer.apple.com/library/mac/#featuredarticles/BuildingWithBlocks/
• http://developer.apple.com/library/ios/#featuredarticles/Short_Practical_Guide_Blocks/

Best example yet:

• http://developer.apple.com/library/mac/#documentation/General/Conceptual/DevPedia-CocoaCore/Block.html%23//apple_ref/doc/uid/TP40008195-CH3-SW1