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How to check if a Unix .tar.gz file is a valid file without uncompressing?
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What about just getting a listing of the tarball and throw away the output, rather than decompressing the file?
tar -tzf my_tar.tar.gz >/dev/null
Edited as per comment. Thanks zrajm!
Edit as per comment. Thanks Frozen Flame! This test in no way implies integrity ...
How to query as GROUP BY in django?
...Another solution is to use the group_by property:
query = Members.objects.all().query
query.group_by = ['designation']
results = QuerySet(query=query, model=Members)
You can now iterate over the results variable to retrieve your results. Note that group_by is not documented and may be changed in ...
Use of “instanceof” in Java [duplicate]
...en you should use instanceof in your design, especially with developing an API and throwing misuse exceptions
– Jace J McPherson
Jun 15 '16 at 19:02
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In C++, is it still bad practice to return a vector from a function?
...o says nothing about v-tables, so you can't be sure that virtual function calls are efficient either. Essentially, you need to put some faith in the compiler at times.
– Peter Alexander
Jun 28 '10 at 23:04
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How to launch Safari and open URL from iOS app
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@g_fred. Why would he not be able to include a Swift version?
– ericgu
Mar 24 '15 at 13:21
2
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Log4net rolling daily filename with date in the file name
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If I recall correctly, it went like this. On startup, log4net would generate the first filename in the rolling sequence. It would detect that that file already exist and would then decide to roll to the second file, but when that one...
How do I install Python OpenCV through Conda?
I'm trying to install OpenCV for Python through Anaconda , but I can't seem to figure this out.
41 Answers
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Best Practice: Software Versioning [closed]
... captures a different intent:
the major segment indicates breakage in the API
the minor segment indicates "externally visible" changes
the service segment indicates bug fixes and the change of development stream
the qualifier segment indicates a particular build
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Reading specific lines only
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with linecache.getlin('some_file', 4) I get the 4th line, not the 5th.
– Juan
Dec 11 '14 at 18:14
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Using jQuery to center a DIV on the screen
...ou need the jqueryUI library to use .position() as a function. Check out: api.jqueryui.com/position/
– jake
Jun 15 '13 at 17:04
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