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Check if OneToOneField is None in Django
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To check if the (OneToOne) relation exists or not, you can use the hasattr function:
if hasattr(request.user, 'type1profile'):
# do something
elif hasattr(request.user, 'type2profile'):
# do something else
else:
# do something else
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Which is more preferable to use: lambda functions or nested functions ('def')?
...ly use lambda functions but sometimes use nested functions that seem to provide the same behavior.
16 Answers
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python pandas remove duplicate columns
What is the easiest way to remove duplicate columns from a dataframe?
9 Answers
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What is the difference between HTTP status code 200 (cache) vs status code 304?
I'm using the Google "Page Speed" plug-in for Firefox to access my web site.
5 Answers
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What version of javac built my jar?
How can I tell what version of the Java compiler was used to build a jar? I have a jar file, and it could have been built in any one of three JDKs. We need to know exactly which one, so we can certify compatibility. Is the compiler version embedded somewhere in the class files or jar?
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Get yesterday's date in bash on Linux, DST-safe
I have a shell script that runs on Linux and uses this call to get yesterday's date in YYYY-MM-DD format:
10 Answers
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jQuery loop over JSON result from AJAX Success?
On the jQuery AJAX success callback I want to loop over the results of the object. This is an example of how the response looks in Firebug.
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Fragment Inside Fragment
...ck button. Application Main screen
has buttons and pressing on each button view replace with new
fragment(and that fragment contain inside another fragment),
dynamically adding/replacing fragment is working fine, by pressing
button1 fragment replaced, same happens when pressing button, but if
I pres...
Write a function that returns the longest palindrome in a given string
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can't push to branch after rebase
We use git and have a master branch and developer branches. I need to add a new feature and then rebase the commits to master, then push master to CI server.
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