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Fastest way to get the first object from a queryset in django?
Often I find myself wanting to get the first object from a queryset in Django, or return None if there aren't any. There are lots of ways to do this which all work. But I'm wondering which is the most performant.
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How to correctly dismiss a DialogFragment?
...u could be right, so for the time being I've wrote up another way to close my DialogFragments. The way that I was dismissing them using the dismiss() method was just finding the fragment by tag and then running dismiss() on it if it wasn't null. Oh and yeah, I'm newing the fragment right before pass...
Imitating a blink tag with CSS3 animations
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Works fine, thanks, here's my implementation based on your solution: jsfiddle.net/gnx4mqc4
– Hamid Behnam
Jan 13 '15 at 1:03
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How to “test” NoneType in python?
...nymore. So needed a check statement.
if type(author) == type(None):
my if body
else:
my else body
Author can be any variable in this case, and None can be any type that you are checking for.
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Why can't decimal numbers be represented exactly in binary?
.../wiki/Countable_set
http://en.wikipedia.org/wiki/Uncountable_set
Update:
My apologies, I appear to have misinterpreted the question. My response is about why we cannot represent every real value, I hadn't realized that floating point was automatically classified as rational.
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How is Pythons glob.glob ordered?
...ear in the filesystem, i.e. the one you get when using ls -U. (At least on my machine this produces the same order as listing glob matches).
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Checking if object is empty, works with ng-show but not from controller?
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This requirement isn't in your question, so my answer is based on the over simplified scenario. If you really need an object to start with, you can try $scope.items = {available: false}, and ng-show="items.available", and in your controller just check if (items.availab...
Using MySQL with Entity Framework [closed]
Can't find anything relevant about Entity Framework/MySQL on Google so I'm hoping someone knows about it.
10 Answers
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“Private” (implementation) class in Python
...not know the underscore rule extended to classes. I do not want to clutter my namespace when importing, so this behavior is what I was looking for. Thanks!
– oparisy
Feb 15 '09 at 19:52
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How do I get list of methods in a Python class?
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print([ m for m in dir(my_class) if not m.startswith('__')])
– Evhz
Apr 5 '19 at 21:19
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