Works swimmingly. I have 10.5 on my laptop (Darwin Kernel Version 9.3.0) and there is 10.4 on the lab server (Darwin Kernel Version 8.11.0) and Unison synchs just fine over ssh. Thanks to Alan Schmitt for the binaries.
Python's context managers are a very neat way of handling code that needs a teardown once you are done. Python objects have do have a destructor method ( __del__ ) called right before the last instance of the object is about to be destroyed. You can do a teardown there. However there is a lot of fine print to the __del__ method. A cleaner way of doing tear-downs is through Python's context manager , manifested as the with keyword. class CrushMe: def __init__(self): self.f = open('test.txt', 'w') def foo(self, a, b): self.f.write(str(a - b)) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.f.close() return True with CrushMe() as c: c.foo(2, 3) One thing that is important, and that got me just now, is error handling. I made the mistake of ignoring all those 'junk' arguments ( exc_type, exc_val, exc_tb ). I just skimmed the docs and what popped out is that you need to return True or...
Just a heads up that Unison does not support extended attributes beyond Finder information.
ReplyDeleteYou know, that explains something that puzzled me for a while: I was trying out cocoviewx for picture organization. I tested it by commenting on two photos. The first time I synched using Unison it went fine (these photos were id-d as having changed). The next time, again the photos were identified as having changed - when I hadn't touched them. I looked at the Unison comment, and it said permissions had been changed. This happened repeatedly - I thought the server on which the backup was sitting was 'touch'-ing the files or something. Finally Jon (from our lab) pointed me to os x extended attributes and such. I used xattr to get rid of the extended attributes that cocoviewx silently put into my pictures. The problem stopped from then on...
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