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Checking for empty queryset in Django
What is the recommended idiom for checking whether a query returned any results?
Example:
7 Answers
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HTTP Error 404.3 - Not Found" while browsing wcf service on Windows Server 2008(64bit)
...t work since it could not find System.ServiceModel.Activation.HttpHandler. What finally worked was adding the handler Mori mentions manually to my web.config file.
<system.webServer>
<handlers>
<add name="svc-Integrated" path="*.svc" verb="GET,HEAD,POST,DEBUG" type="System....
Output data from all columns in a dataframe in pandas [duplicate]
...this is an old question, but I have just had a similar problem and I think what I did would work for you too.
I used the to_csv() method and wrote to stdout:
import sys
paramdata.to_csv(sys.stdout)
This should dump the whole dataframe whether it's nicely-printable or not, and you can use the to...
Generating a PNG with matplotlib when DISPLAY is undefined
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I will just repeat what @Ivo Bosticky said which can be overlooked. Put these lines at the VERY start of the py file.
import matplotlib
matplotlib.use('Agg')
Or one would get error
*/usr/lib/pymodules/python2.7/matplotlib/__init__.py:923...
UIScrollView not scrolling
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Genius - such a simple way to check what is going on. Thanks a bunch!
– The Crazy Chimp
Jan 20 '13 at 11:54
add a comment
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Save An Image To Application Documents Folder From UIView On IOS
...tentsOfFile:filePath];
UIImage *image = [UIImage imageWithData:pngData];
What you'll probably want to do is make a method that creates path strings for you, since you don't want that code littered everywhere. It might look like this:
- (NSString *)documentsPathForFileName:(NSString *)name
{
N...
How do I move a file with Ruby?
...eg <code>File.rename 'c:/test/test.txt', 'e:/test.txt'</code>, what OS do you use ?
– peter
Jan 25 '13 at 10:23
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Is there a difference between x++ and ++x in java?
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When considering what the computer actually does...
++x: load x from memory, increment, use, store back to memory.
x++: load x from memory, use, increment, store back to memory.
Consider:
a = 0
x = f(a++)
y = f(++a)
where func...
CHECK constraint in MySQL is not working
... reasons that I will always use PostgreSQL instead of MySQL given a choice whatsoever.
– Reinderien
Nov 11 '14 at 7:05
5
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How can I get the Typescript compiler to output the compiled js to a different directory?
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This is exactly what I was looking for! Thanks a lot, I can't believe I didn't see it before...
– TheGuyWithTheFace
Jun 27 '14 at 16:04
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