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Fast check for NaN in NumPy
...f numpy.min:
In [13]: %timeit np.isnan(np.min(x))
1000 loops, best of 3: 244 us per loop
In [14]: %timeit np.isnan(np.sum(x))
10000 loops, best of 3: 97.3 us per loop
Unlike min, sum doesn't require branching, which on modern hardware tends to be pretty expensive. This is probably the reason why...
select count(*) from table of mysql in php
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Kermit
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answered Aug 2 '11 at 5:48
Shakti SinghShakti Singh
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How to present a simple alert message in java?
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241
I'll be the first to admit Java can be very verbose, but I don't think this is unreasonable:
J...
How can I remove duplicate rows?
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Srini
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answered Aug 20 '08 at 22:00
Mark BrackettMark B...
Are nested HTML comments possible?
... johny why
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answered Jan 14 '09 at 12:35
Aaron DigullaAaron Digulla
288...
How to get the number of days of difference between two dates on mysql?
...calculation
In your case, you'd use :
mysql> select datediff('2010-04-15', '2010-04-12');
+--------------------------------------+
| datediff('2010-04-15', '2010-04-12') |
+--------------------------------------+
| 3 |
+-------------------------------------...
What are the drawbacks of Stackless Python? [closed]
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4 Answers
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Active
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What is the best way to force yourself to master vi? [closed]
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4
I agree, just keep at it. You'll know you are there once you are forced to used nano or notepad and it drives you crazy!
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How do I print to the debug output window in a Win32 app?
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4
@CDT: It depends on the type of myStr. Is it char*, wchar_t* or LPTSTR? Assuming that it is char* you simply call OutputDebugStringA(myStr) ...
How to insert element as a first child?
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164
Try the $.prepend() function.
Usage
$("#parent-div").prepend("<div class='child-div'>som...