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A comment on Introducing Swift. Parent comment

Re:Introducing Swift by seanmcdirmid on Monday June 02, 2014 @04:54PM (#7836310)
Time travel debugging has existed for a long time, and it's not limited to functional languages; the most obvious way they could do this is through checkpointing.
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Re:Introducing Swift by cwp on Monday June 02, 2014 @05:36PM (#7836610)
Checkpointing is a natural fit with the Cocoa API, which uses an event loop. Just save the state of the application after each event is handled.
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