fnc12 questions

fnc12 answers

• xcode project always gets facebook login fail status
• How to use Implicitly Unwrapped Optionals?
• How to mark a constexpr function's parameter unused?
• 106 duplicate symbols for architecture armv7
• Swift: Could not find an overload for '|' that accepts the supplied arguments
• How to Sort an array in an ascending order swift 2.3
• Calling derived class through base class function pointer
• CoreFoundation Trap error "Thread1:EXC_BREAKPOINT (code=EXC_ARM_BREAKPOINT, subcode=0xdefe)"
• Loading PNG image on iPhone fails, works in simulator