Printing a variable memory address in swift

Question

Is there anyway to simulate the [NSString stringWithFormat:@\"%p\", myVar], from Objective-C, in the new Swift language?

For example:

le         


        

Answer 1

If you just want to see this in the debugger and not do anything else with it, there's no need to actually get the Int pointer. To get the string representation of an object's address in memory, just use something like this:

public extension NSObject { // Extension syntax is cleaner for my use. If your needs stem outside NSObject, you may change the extension's target or place the logic in a global function
    public var pointerString: String {
        return String(format: "%p", self)
    }
}

Example usage:

print(self.pointerString, "Doing something...")
// Prints like: 0x7fd190d0f270 Doing something...

Additionally, remember that you can simply print an object without overriding its description, and it will show its pointer address alongside more descriptive (if oft cryptic) text.

print(self, "Doing something else...")
// Prints like:  Doing something else...
// Sometimes like: <_TtCC14__lldb_expr_668MyModule7MyClass: 0x7fd190d0f270> Doing something else...