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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...
Error:(1, 0) Plugin with id 'com.android.application' not found
... my first attempt at Android Studio. I installed 0.8.0 and updated to 0.8.2. As soon as a project is created I get the error message:
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Define a lambda expression that raises an Exception
... however allow you to conditionally raise exceptions, e.g.:
y = lambda x: 2*x if x < 10 else raise_(Exception('foobar'))
Alternatively you can raise an exception without defining a named function. All you need is a strong stomach (and 2.x for the given code):
type(lambda:0)(type((lambda:0)....
R programming: How do I get Euler's number?
For example, how would I go about entering the value e^2 in R?
3 Answers
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How to hide action bar before activity is created, and then show it again?
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27 Answers
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Is it possible to use argsort in descending order?
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235
If you negate an array, the lowest elements become the highest elements and vice-versa. There...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
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12 Answers
12
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How to correctly close a feature branch in Mercurial?
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218
One way is to just leave merged feature branches open (and inactive):
$ hg up default
$ hg me...
Parse DateTime string in JavaScript
....1979";
var dateParts = strDate.split(".");
var date = new Date(dateParts[2], (dateParts[1] - 1), dateParts[0]);
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