April 2015
Intermediate to advanced
556 pages
17h 47m
English
book
Cocoa Programming for OS X: The Big Nerd Ranch Guide
by Aaron Hillegass, Adam Preble, Nate Chandler
Content preview from Cocoa Programming for OS X: The Big Nerd Ranch Guide
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For the More Curious: Document-Based Applications Without Undo
The NSUndoManager for your application knows when unsaved edits have occurred. Also, the window is automatically marked as edited. But what if you have written an application and are not registering your changes with the undo manager?
NSDocument keeps track of how many changes have been made. It has a method for this purpose:
func updateChangeCount(change: NSDocumentChangeType)
The NSDocumentChangeType can be one of the following: ChangeDone, ChangeUndone, or ChangeCleared. ChangeDone increments the change count, ChangeUndone decrements the change count, and ChangeCleared sets the change count to 0. The window is marked as dirty unless the change count is 0.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.