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Select DISTINCT individual columns in django?
...g note in the docs about using distinct(). The above example will work but all combinations of distinct() and values() may not.
PS: it is a good idea to use lower case names for fields in a model. In your case this would mean rewriting your model as shown below:
class ProductOrder(models.Model):
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How to avoid using Select in Excel VBA
...hortcut to the Evaluate method, but this is less efficient and should generally be avoided in production code.
Set rng = [A1]
Set rng = [A1:B10]
All the above examples refer to cells on the active sheet. Unless you specifically want to work only with the active sheet, it is better to Dim a Works...
Maven dependency for Servlet 3.0 API?
...JSTL 1.2, JSF 2.0, JTA 1.1, JSR-45, JSR-250.
But to my knowledge, nothing allows to say that these APIs won't be distributed separately (in java.net repository or somewhere else). For example (ok, it may a particular case), the JSF 2.0 API is available separately (in the java.net repository):
<...
Can not connect to local PostgreSQL
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This really looks like a file permissions error. Unix domain sockets are files and have user permissions just like any other. It looks as though the OSX user attempting to access the database does not have file permissions to acce...
Google Maps API - Get Coordinates of address
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What you are looking for is called Geocoding.
Google provides a Geocoding Web Service which should do what you're looking for. You will be able to do geocoding on your server.
JSON Example:
http://maps.google.com/maps/api/geocode/json?address=1600+...
Where does PHP's error log reside in XAMPP?
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\xampp\apache\logs\error.log, where xampp is your installation folder.
If you haven't changed the error_log setting in PHP (check with phpinfo()), it will be logged to the Apache log.
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Signed to unsigned conversion in C - is it always safe?
...herwise, if the type of the operand with signed integer type can represent all of the values of the type of the operand with unsigned integer type, then the operand with unsigned integer type is converted to the type of the operand with signed integer type.
Otherwise, both operands are converted t...
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
Can anybody give a clear explanation of how variable assignment really works in Makefiles.
6 Answers
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Append lines to a file using a StreamWriter
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I assume you are executing all of the above code each time you write something to the file. Each time the stream for the file is opened, its seek pointer is positioned at the beginning so all writes end up overwriting what was there before.
You can so...
Squash my last X commits together using Git
...e difference between this rebase -i approach and reset --soft is, rebase -iallows me to retain the commit author, while reset --soft allows me to recommit. Sometimes i need to squash commits of pull requests yet maintaining the author information. Sometimes i need to reset soft on my own commits. ...