macOS Where is this useful feature located in XCode?

I'm not at my Mac right now, but if you've got the pragma directive in place, you should be able to click on the method navigator to get that menu pop-up.

The method navigator is the section labelled -showHideInfoPanel: in the following screenshot.
http://www.macresearch.org/files/Xcode_IB_Intro/002.jpg

chrono1081 said:

...there is a neat little pragma directive that lets you put methods into a little pop up window all nice and organized which would be great.

Click to expand...

Further to the previous answer, methods (amongst other things) are shown automatically in the picker window, but #pragma directives allow you to add your own entries.


The "mark -" directive places a separator line in the picker window

If you're writing cross-platform code some compilers will complain when they trip over unfamiliar 'pragma' statements.
For this reason I use 'pragma' statements only when necessary and usually surrounded with conditionals. In this case
'pragma mark' is not necessary. Instead use the comment version which doesn't emit unknown 'pragma' noise on other
platforms.

The comment version uses whatever constitutes a comment in the language currently in used. For 'C++' and 'C89' it would
be '/* */' or '//'

Anyway the following provides the same usefulness whitout using 'pragma'.

// MARK: -
// MARK: SUBROUTINES
// FIXME: See bug report <URL/BUG143>
// TODO: We may want to add feature <URL/TODO182>
// !!!: Warning beware the following consequences!
// ???: WTH Is this supposed to do?

EDIT: Oh, and that menu can be accessed form the keyboard by pressing Control-2. The arrow keys to move up and down and the Return to select the currently hilited item.