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How to drop into REPL (Read, Eval, Print, Loop) from Python code
Is there a way to programmatically force a Python script to drop into a REPL at an arbitrary point in its execution, even if the script was launched from the command line?
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How to count occurrences of a column value efficiently in SQL?
... for the second query, the outer select should be on C.cnt because there is no S.cnt, otherwise you get an error: Invalid column name 'cnt'
– KM.
Oct 1 '09 at 14:00
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How to compare two dates?
...ted Oct 8 '18 at 10:28
Thomas Decaux
17.3k22 gold badges7878 silver badges8282 bronze badges
answered Nov 15 '11 at 20:02
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Creating an official github mirror
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Based on communicating with GitHub's support team, I found that GitHub currently offers no direct mechanism for a user to mirror repositories in this fashion.
However, one can ask GitHub to install this service for repositories which are pa...
How to see full symlink path
...rick.
Alternatively, if you don't have either of the above installed, you can do the following if you have python 2.6 (or later) installed
python -c 'import os.path; print(os.path.realpath("symlinkName"))'
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What is the significance of ProjectTypeGuids tag in the visual studio project file
What is the significance of the ProjectTypeGuids tag in a visual studio project?? When I created a WPF application, i am seeing two GUIDs in here.
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What is the difference between gmake and make?
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'gmake' refers specifically to GNU make. 'make' refers to the system's default make implementation; on most Linux distros this is GNU make, but on other unixes, it could refer to some other implementation of make, such as BSD make, or the make imp...
Method overloading in Objective-C?
...far as my knowledge, Objective-C does not support method overloading. What can be the alternative for this in Objective-C? Or should I always use different method name?
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When does static class initialization happen?
...locks and private static methods used to instantiate private static fields called (in order) at that instant?
3 Answers
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Django in / not in query
...True); Objs.delete(); Tbl2.objects.filter(id__in=IDs') This did not work because IDs is actually a QuerySet object. When I deleted the rows it originated from, it no longer worked with other queries. The solution is Tbl2.objects.filter(id__in=list(IDs)) -- turn it into a list
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