Command-clicking on the symbol shows the code actions menu where you can set a column breakpoint[…] Xcode shows the breakpoint as a small carat at the column in the source code[…]
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In the WWDC 2021 video on breakpoints they show an example of column breakpoints working with a complex set of Swift closures. When Xcode hits the breakpoint it allows you to inspect the anonymous parameter of the closure (
$0).
This looks great. I hope they can get it working as shown in the video.