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ab load testing

... default it will hit http:// protocol if you don't specify it. ab -k -c 350 -n 20000 example.com/ By issuing the command above, you will be hitting http://example.com/ with 350 simultaneous connections until 20 thousand requests are met. It will be done using the keep alive header. After the pro...
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Android Studio - local path doesn't exist

After updating Android Studio to 0.2.4 I can't get my project to deploy. There is a complete mismatch of the apk filename. ...
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Code Golf - π day

... In dc: 88 and 93 93 94 96 102 105 129 138 141 chars Just in case, I am using OpenBSD and some supposedly non-portable extensions at this point. 93 chars. This is based on same formula as FORTRAN solution (slightly different results than test cases). ...
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Can someone give an example of cosine similarity, in a very simple, graphical way?

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Accessing items in an collections.OrderedDict by index

...> d.items() [('foo', 'python'), ('bar', 'spam')] >>> d.items()[0] ('foo', 'python') >>> d.items()[1] ('bar', 'spam') Note for Python 3.X dict.items would return an iterable dict view object rather than a list. We need to wrap the call onto a list in order to make the indexing...
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Assign pandas dataframe column dtypes

... Since 0.17, you have to use the explicit conversions: pd.to_datetime, pd.to_timedelta and pd.to_numeric (As mentioned below, no more "magic", convert_objects has been deprecated in 0.17) df = pd.DataFrame({'x': {0: 'a', 1: 'b'}...
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How are multi-dimensional arrays formatted in memory?

...things are going to happen. Here's a quick example: int array1[3][2] = {{0, 1}, {2, 3}, {4, 5}}; In memory looks like this: 0 1 2 3 4 5 exactly the same as: int array2[6] = { 0, 1, 2, 3, 4, 5 }; But if you try to pass array1 to this function: void function1(int **a); you'll get a warnin...
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Check if UIColor is dark or bright?

...o use is ((Red value * 299) + (Green value * 587) + (Blue value * 114)) / 1000. share | improve this answer | follow | ...
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How to calculate “time ago” in Java?

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Append a NumPy array to a NumPy array

... answered Mar 19 '12 at 18:01 endolithendolith 19.6k2424 gold badges107107 silver badges170170 bronze badges ...