Digging Deeper into Breakpoints
By default, a breakpoint does one thing: it breaks! That is to say, it halts execution when reached, and lets you inspect the program state.
While it’s not immediately obvious, breakpoints can do a lot more than this. If you control-click or right-click a breakpoint in the gutter, you can delete it, disable/reenable it, or edit it. Editing a breakpoint shows a pop-over window with a bunch of interesting options.
The first thing you can do in the editing pop-over is to assign a condition. If a condition is set, the breakpoint will only pause if the condition is met. For example, if the calculatePrimes(to:) method were misbehaving for large values of max, you could set the condition to only break for max >= 1000000 ...
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