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How to implement an ordered, default dict? [duplicate]
...deredDict() and defaultdict() from collections in one object, which shall be an ordered, default dict .
Is this possible?
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Fastest way to get the first object from a queryset in django?
...eturn 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 many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
... No, the limits are imposed on the domain. So you could technically get FF up to 12 connections if you had a subdomain in addition to your site.
– Bob
Feb 18 '09 at 13:39
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How can I get a list of all classes within current module in Python?
I've seen plenty of examples of people extracting all of the classes from a module, usually something like:
11 Answers
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How to avoid having class data shared among instances?
...problem you face is that x.list and y.list are the same list, so when you call append on one, it affects the other.
– Matt Moriarity
Nov 5 '09 at 14:04
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What is getattr() exactly and how do I use it?
... understand about getattr() is that getattr(li, "pop") is the same as calling li.pop .
14 Answers
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Does the APNS device token ever change, once created?
...hat device.
If the user restores backup data to a new device or reinstalls the
operating system, the device token changes.
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get current url in twig template?
...ttributes.get('_route_params')) %}
The app global view variable contains all sorts of useful shortcuts, such as app.session and app.security.token.user, that reference the services you might use in a controller.
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__FILE__, __LINE__, and __FUNCTION__ usage in C++
...st result in the mangled name. Since I'm not a compiler writer, it's not really my call.
– Evan Teran
Apr 5 '12 at 3:13
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Use numpy array in shared memory for multiprocessing
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To add to @unutbu's (not available anymore) and @Henry Gomersall's answers. You could use shared_arr.get_lock() to synchronize access when needed:
shared_arr = mp.Array(ctypes.c_double, N)
# ...
def f(i): # could be anything numpy accepts as an index such another numpy array
with ...