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How to calculate a time difference in C++
...) - begin_time ) / CLOCKS_PER_SEC;
If you want calculate execution time for self ( not for user ), it is better to do this in clock ticks ( not seconds ).
EDIT:
responsible header files - <ctime> or <time.h>
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How to estimate how much memory a Pandas' DataFrame will need?
...g deep=True will enable a more accurate memory usage report, that accounts for the full usage of the contained objects.
This is because memory usage does not include memory consumed by elements that are not components of the array if deep=False (default case).
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How to check if current thread is not main thread
...ad().equals( Looper.getMainLooper().getThread() )
Or, if the runtime platform is API level 23 (Marshmallow 6.0) or higher:
Looper.getMainLooper().isCurrentThread()
See the Looper API. Note that calling Looper.getMainLooper() involves synchronization (see the source). You might want to avoid t...
Difference between style = “position:absolute” and style = “position:relative”
...ied), or the document body (browser viewport) if no such ancestor exists.
For example, if I had this code:
<body>
<div style="position:absolute; left: 20px; top: 20px;"></div>
</body>
...the <div> would be positioned 20px from the top of the browser viewport, and ...
Calling a parent window function from an iframe
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@a4bike for such scenarios, window.postMessage() (or window.parent.postMessage()) exists. Check @Andrii answer
– Fr0zenFyr
May 6 '17 at 5:35
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Sync data between Android App and webserver [closed]
...tually stores the data it receives from the webserver. One possible method for accomplishing this is writing your own custom ContentProvider backed by a Sqlite database. A decent tutorial for a content provider can be found here: http://thinkandroid.wordpress.com/2010/01/13/writing-your-own-contentp...
Can an ASP.NET MVC controller return an Image?
...ages");
var path = Path.Combine(dir, id + ".jpg"); //validate the path for security or use other means to generate the path.
return base.File(path, "image/jpeg");
}
As a note, this seems to be fairly efficient. I did a test where I requested the image through the controller (http://localho...
How to uninstall Python 2.7 on a Mac OS X 10.6.4?
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Thanks for the heads up Ned, I did remove it, and found out the hard way that you have to reinstall Mac OS X. I'm leaving this here for anyone else who comes along and thinks the same thing I did. Don't remove Python in /System/Libr...
Unable to understand useCapture parameter in addEventListener
...ppen to implement it the same way. Capture events will, however, be done before non-capturing events.
– beatgammit
Aug 20 '13 at 0:56
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Recommended SQL database design for tags or tagging [closed]
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Three tables (one for storing all items, one for all tags, and one for the relation between the two), properly indexed, with foreign keys set running on a proper database, should work well and scale properly.
Table: Item
Columns: ItemID, Tit...