Looking to trigger the end of a loop by the creation of a file. Is this possible? Is this advisable? Currently using: a 'for' loop with a 'for' loop guard expression to test for the existence of a file. Tried file-exists? but that does not seem appropriate. Tried using Racket function: filesystem-change-evt but that did not seem appropriate. Is it possible to trigger an end condition on a 'for' loop by the creation of a file? I suspect my problem is that it takes a significant amount of time for the operating system to register the creation of a file. So maybe the best that can be done is to use file-exists? as it works but there a many loops of the 'for' loop before the end condition takes effect. Any comments?
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