NSNotification and NSOperation
File list:
class3
.....\Classes
.....\.......\NSOperationTableAppDelegate.h
.....\.......\NSOperationTableAppDelegate.m
.....\.......\RootViewController.h
.....\.......\RootViewController.m
.....\NSOperationTable.xcodeproj
.....\..........................\project.xcworkspace
.....\..........................\...................\xcuserdata
.....\..........................\...................\..........\mengshazhao.xcuserdatad
.....\..........................\...................\..........\.......................\UserInterfaceState.xcuserstate
.....\..........................\...................\contents.xcworkspacedata
.....\..........................\xcuserdata
.....\..........................\..........\mengshazhao.xcuserdatad
.....\..........................\..........\.......................\xcschemes
.....\..........................\..........\.......................\.........\NSOperationTable.xcscheme
.....\..........................\..........\.......................\.........\xcschememanagement.plist
.....\..........................\brandontreb.mode1v3
.....\..........................\brandontreb.pbxuser
.....\..........................\project.pbxproj
.....\.DS_Store
.....\main.m
.....\MainWindow.xib
.....\NSOperationTable-Info.plist
.....\NSOperationTable_Prefix.pch
.....\RootViewController.xib
__MACOSX
.......\class3
.......\......\Classes
.......\......\.......\._NSOperationTableAppDelegate.h
.......\......\.......\._NSOperationTableAppDelegate.m
.......\......\.......\._RootViewController.h
.......\......\.......\._RootViewController.m
.......\......\NSOperationTable.xcodeproj
.......\......\..........................\._brandontreb.mode1v3
.......\......\..........................\._brandontreb.pbxuser
.......\......\..........................\._project.pbxproj
.......\......\._.DS_Store
.......\......\._Classes
.......\......\._main.m
.......\......\._MainWindow.xib
.......\......\._NSOperationTable-Info.plist
.......\......\._NSOperationTable_Prefix.pch
.......\......\._RootViewController.xib