Use C++ with Cocoa Instead of Objective-C?

You cannot write a Cocoa application entirely in C++. Cocoa relies heavily on the late binding capabilities of Objective-C for many of its core technologies such as Key-Value Bindings, delegates (Cocoa style), and the target-action pattern. The late binding requirements make it very difficult to implement the Cocoa API in a compile-time bound, typed language … Read more

How to pass an array of Swift strings to a C function taking a char ** parameter

The C function int initialize(int argc, char **argv); is mapped to Swift as func initialize(argc: Int32, argv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>>) -> Int32 This is a possible solution: let args = [“-c”, “1.2.3.4”, “-p”, “8000”] // Create [UnsafeMutablePointer<Int8>]: var cargs = args.map { strdup($0) } // Call C function: let result = initialize(Int32(args.count), &cargs) // Free the duplicated … Read more

How to show loading spinner in jQuery?

There are a couple of ways. My preferred way is to attach a function to the ajaxStart/Stop events on the element itself. $(‘#loadingDiv’) .hide() // Hide it initially .ajaxStart(function() { $(this).show(); }) .ajaxStop(function() { $(this).hide(); }) ; The ajaxStart/Stop functions will fire whenever you do any Ajax calls. Update: As of jQuery 1.8, the documentation … Read more