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PHP memory profiling
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Xdebug reimplemented memory tracing in 2.6 (2018-01-29) which can be used in Qcachegrind or similar tool. Just make sure to select the memory option :)
From the docs:
Since Xdebug 2.6, the profiler also collects information about how much memory is being used, and wh...
What is the difference between “pom” type dependency with scope “import” and without “import”?
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189
You can only import managed dependencies. This means you can only import other POMs into the d...
In C++, if throw is an expression, what is its type?
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David ThornleyDavid Thornley
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Get selected value of a dropdown's item using jQuery
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849
For single select dom elements, to get the currently selected value:
$('#dropDownId').val();
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How much size “Null” value takes in SQL Server
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Mark ByersMark Byers
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pandas DataFrame: replace nan values with average of columns
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283
You can simply use DataFrame.fillna to fill the nan's directly:
In [27]: df
Out[27]:
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MySQL: how to get the difference between two timestamps in seconds
...he TIME_TO_SEC() functions as follows:
SELECT TIME_TO_SEC(TIMEDIFF('2010-08-20 12:01:00', '2010-08-20 12:00:00')) diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
You could also use the UNIX_TIMESTAMP() function as @Amber suggested in an other answer:
SELECT UNIX_TIMEST...
catch all unhandled exceptions in ASP.NET Web Api
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decatesdecates
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Java: Class.this
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Rarblack
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answered Apr 3 '11 at 14:51
aioobeaioobe
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Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [
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287
Hardware
If a GPU device has, for example, 4 multiprocessing units, and they can run 768 thre...