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How to quit a java app from within the program
...lso, as others have mentioned, clean up first! That involves closing files and other open resources.
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Dropping Unique constraint from MySQL table
... @Ankur Mukherjee: I forgot to mention: You have to change tbl_name and index_name to the name of your actual table and the name of the actual index, respectively. You can see the names in MySQL Query Browser. You can also do SHOW CREATE TABLE tbl_name.
– Mark Byers
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RuntimeWarning: DateTimeField received a naive datetime
...e your naive datetime objects timezone aware and avoid those warnings.
It converts naive datetime object (without timezone info) to the one that has timezone info (using timezone specified in your django settings if you don't specify it explicitly as a second argument):
import datetime
from django...
Facebook database design?
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Keep a friend table that holds the UserID and then the UserID of the friend (we will call it FriendID). Both columns would be foreign keys back to the Users table.
Somewhat useful example:
Table Name: User
Columns:
UserID PK
EmailAddress
Password
Ge...
SQL : BETWEEN vs =
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Would there be a second compiler step as BETWEEN gets converted to conditionals? I understand this is a bit pedantic but would there be an additional overhead?
– James Scott
Aug 11 '16 at 14:48
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multiple definition of template specialization when using different objects
... in different object files (ie. in this case it is instantiated in other.c and main.c) but the original object itself is defined only in one file - in this case hello.h.
– Justin Liang
Apr 8 '15 at 17:02
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What does the caret operator (^) in Python do?
I ran across the caret operator in python today and trying it out, I got the following output:
5 Answers
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Mvn install or Mvn package
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I have a project where I am converting the main folder code & test folder code into Jar. Then, I want to deploy this into nexus so that it can be used by other projects. My deploy command is "mvn clean deploy -DskipTests". Can I make this command pa...
How to turn on front flash light programmatically in Android?
...o turn on front flash light (not with camera preview) programmatically in Android. I googled for it but the help i found referred me to this page
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Save all files in Visual Studio project as UTF-8
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I would convert the files programmatically (outside VS), e.g. using a Python script:
import glob, codecs
for f in glob.glob("*.py"):
data = open("f", "rb").read()
if data.startswith(codecs.BOM_UTF8):
# Already UTF-8...