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How to check for an undefined or null variable in JavaScript?
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24 Answers
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Array initializing in Scala
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edited Jun 1 '11 at 12:09
answered Oct 7 '10 at 11:11
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How to delete or add column in SQLITE?
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stackoverflow.com/a/5987838/1578528 gives a basic example for performing the task.
– bikram990
May 8 '14 at 5:53
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Bypass popup blocker on window.open when JQuery event.preventDefault() is set
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answered Mar 1 '12 at 10:53
T.J. CrowderT.J. Crowder
825k153153 gold badges15121512 silver badges15541554 bronze badges
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Easiest way to rename a model using Django/South?
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./manage.py schemamigration yourapp rename_foo_to_bar --empty
(Update 2: try --auto instead of --empty to avoid the warning below. Thanks to @KFB for the tip.)
If you're using an older version of south, you'll need startmigration instead of schemamigration.
Then manually edit the migration f...
Stop pip from failing on single package when installing with requirements.txt
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238
Running each line with pip install may be a workaround.
cat requirements.txt | xargs -n 1 pip...
Makefiles with source files in different directories
...tional way is to have a Makefile in each of the subdirectories (part1, part2, etc.) allowing you to build them independently. Further, have a Makefile in the root directory of the project which builds everything. The "root" Makefile would look something like the following:
all:
+$(MAKE) -C pa...
Set value to NULL in MySQL
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275
Don't put NULL inside quotes in your update statement. This should work:
UPDATE table SET f...
How can I move a single directory from a git repository to a new repository whilst maintaining the h
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Brian CampbellBrian Campbell
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