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...前的假想，我们需要一台大内存的服务器，用于部署nginx的comet应用。下面是我用的服务端的情况：
Summary: Dell R710, 2 x Xeon E5520 2.27GHz, 23.5GB / 24GB 1333MHz
System: Dell PowerEdge R710 (Dell 0VWN1R)
Processors: 2 x Xeon E5520 2.27GH...
Removing all non-numeric characters from string in Python
...on works in both python 2.7 and 3.4. Thank you!
– Alex
Jan 20 '16 at 14:47
1
I prefer this altern...
How to use the pass statement?
...e pass, the code wouldn't run.
You would then get an:
IndentationError: expected an indented block
To summarize, the pass statement does nothing particular, but it can act as a placeholder, as demonstrated here.
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HTML5: Slider with two inputs possible?
Is it possible to make a HTML5 slider with two input values, for example to select a price range? If so, how can it be done?
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Is Big O(logn) log base e?
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Once expressed in big-O() notation, both are correct. However, during the derivation of the O() polynomial, in the case of binary search, only log2 is correct. I assume this distinction was the intuitive inspiration for your que...
Javascript fuzzy search that makes sense
...m or combine/ weight the results from two algorithms.
It strikes me that exact or close matches to the "starting prefix" are something Levenshtein-Demerau gives no particular weight to -- but your apparent user expectations would.
I searched for "better than Levenshtein" and, among other things, f...
Is it safe to check floating point values for equality to 0?
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It is safe to expect that the comparison will return true if and only if the double variable has a value of exactly 0.0 (which in your original code snippet is, of course, the case). This is consistent with the semantics of the == operator....
GMSGroundOverlay animating - should I be using a CATiledLayer?
I am experimenting with the Google Maps for iOS SDK latest version 1.2.1.2944 to animate a GMSGroundOverlay . The user has control over the image sequence, so using an animated UIImage isn't a possibility sadly, so i'm loading in the UIImage on the fly. The GMSGroundOverlay.icon is set to the...
How do I convert a string to a double in Python?
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>>> x = "2342.34"
>>> float(x)
2342.3400000000001
There you go. Use float (which behaves like and has the same precision as a C,C++, or Java double).
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Databinding an enum property to a ComboBox in WPF
As an example take the following code:
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