Hands-On Design Patterns with Swift

Using the memory graph hierarchy tool

Now that we've properly configured our project, let's take a look at the tool itself.

Let's use the following code, for the sake of having a simple, working command-line Hello World! application:

class Hello {    func world() {        print("Hello, World!")    }}let hello = Hello()hello.world() // set a breakpoint here

The preceding code is pretty simple; it just prints Hello, World! in the console.

With a breakpoint set on the hello.world() line, run your program, and, in the Debug toolbar, hit the icon that looks like a graph. It will open the Memory Graph Hierarchy tool:

You can also access it from the debug navigator ...