JeremyP questions

JeremyP answers

• NSTask blocks main thread
• Creating Objective-C string using stringification
• Keys in a dictionary from JSON
• Linux system call: getaddrinfo return -2
• how to define 2x2 array in ios?
• Enable incoming connections from specified IP-address only
• Get and set owner, group and permissions in Cocoa
• Why can my Swift app not be built with xcodebuild, but it can be built with XCode?
• The posix C write() and thread-safety
• Compilation issue when using blocks with LLVM GCC 4.2