大约有 48,000 项符合查询结果（耗时：0.0613秒） [XML]
Using numpy to build an array of all combinations of two arrays
... [3, 5, 6],
[3, 5, 7]])
numpy.meshgrid() use to be 2D only, now it is capable of ND. In this case, 3D:
In [115]:
%timeit np.array(np.meshgrid([1, 2, 3], [4, 5], [6, 7])).T.reshape(-1,3)
10000 loops, best of 3: 74.1 µs per loop
In [116]:
np.array(np.meshgrid([1, 2, 3], [4, 5], [6, ...
What is the easiest way to make a C++ program crash?
... to make a quick C++ program that crashes on purpose but I don't actually know the best and shortest way to do that, does anyone know what to put between my:
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How can I tell where mongoDB is storing data? (its not in the default /data/db!)
My host came with a mongodb instance and there is no /db directory so now I am wondering what I can do to find out where the data is actually being stored.
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Shortest way to print current year in a website
... if you want the JavaScript solution, I think that's as short as it gets. (Now I've gone and tempted fate.)
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Convert a string to an enum in C#
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You can use extension methods now:
public static T ToEnum<T>(this string value, bool ignoreCase = true)
{
return (T) Enum.Parse(typeof (T), value, ignoreCase);
}
And you can call them by the below code (here, FilterType is an enum type):
Fil...
A more pretty/informative Var_dump alternative in PHP? [closed]
..._dump(). By definition Krumo is a debugging tool (initially for PHP4/PHP5, now for PHP5 only), which displays structured information about any PHP variable.
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Programmatically update widget from activity/service/receiver
I know it's possible, but I can't figure out a way to trigger an update of my widget from the main activity. Isn't there some general intent I can broadcast?
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What should I name a table that maps two tables together? [closed]
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+1 : well said - a carefully chosen name now will make maintainability a lot easier in the future.
– Preet Sangha
Nov 28 '09 at 21:09
116
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How do I search for an object by its ObjectId in the mongo console?
...ay to change your "scope" or something at the command line and not really know it?
– jcollum
Nov 22 '11 at 20:36
No wo...
How to split a comma-separated value to columns
... fail!) or the really fast JSON-hack. For older version look for the well-known XML-hack (json and xml details here). Or look for one of the may iTVFs based on recursive CTEs.
– Shnugo
Nov 21 '19 at 10:35
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