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  • Luis Ferro thinks this is interesting:

Stopping at a breakpoint and reviewing all the values for all the data variables provides a snapshot of an app in a specific place at a specific time.

From

Cover of Network Programming with Swift: Tools and Techniques to Create iOS and OS X Apps that Network

Note

If breakpoints actually worked properly, which they don't. I've never seen anything on the variables apart from 0x0 or nil values even when doing an NSLog, the value is there and definitivelly not 0x0 or nil.