Tammo Freese questions

Tammo Freese answers

• How do I pass a callback function to sqlite3_exec on iOS 5.1?
• Nested iterators for em-synchrony in Ruby
• How can I indicate I want the synchronous version of a function when in an async context in Swift?
• When an iOS app directly enters the background state?
• CALayer's backgroundFilters doesn nothing on UIView
• NSOperationQueue and background support
• After initializer change 'alias_method' undefined method 'current_user' for class 'ApplicationController'
• Why does the ARC migrator say that NSInvocation's -setArgument: is not safe unless the argument is __unsafe_unretained?
• Lifetime of weak local variables with ARC
• Game Center: addRecipientsWithPlayerIDs... How does it make sense?