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What is the most efficient way to loop through dataframes with pandas? [duplicate]

...Note that iterrows is very slow (it converts every row to a series, potentially messing with your data types). When you need an iterator, better to use itertuples – joris Jul 29 '15 at 15:46 ...
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Matplotlib (pyplot) savefig outputs blank image

...values that depend whether or not T0 exists. Second, after plt.show() is called, a new figure is created. To deal with this, you can Call plt.savefig('tessstttyyy.png', dpi=100) before you call plt.show() Save the figure before you show() by calling plt.gcf() for "get current figure", then you ca...
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How to convert Strings to and from UTF8 byte arrays in Java

... US-ASCII is actually not a very common encoding nowadays. Windows-1252 and ISO-8859-1 (which are supersets of ASCII) are far more widespread. – Michael Borgwardt Oct 9 '09 at 13:26 ...
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How can you dynamically create variables via a while loop? [duplicate]

I want to create variables dynamically via a while loop in Python. Does anyone have any creative means of doing this? 8 Ans...
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Gradients in Internet Explorer 9

...soft.com/testdrive/Graphics/CSSGradientBackgroundMaker/Default.html Note: all of these browsers also support rgb/rgba in place of hexadecimal notation. share | improve this answer | ...
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How to detect the end of loading of UITableView

...htafoya's comment is right. If you want this code to detect end of loading all data from source, it wouldn't, but that's not the original question. This code is for detecting when all cells that are meant to be visible are displayed. willDisplayCell: used here for smoother UI (single cell usually di...
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git + LaTeX workflow

...ve my work computer and my laptop, and I work on them both. I need to keep all the files synchronized between the two computers, and also would like to keep a revision history. I chose git as my DVCS, and I'm hosting my repository on my server. I'm also using Kile + Okular to do the editing. Kile do...
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How to convert nanoseconds to seconds using the TimeUnit enum?

... This answer is now wrong - convert() and the toFoo() methods all return longs now docs.oracle.com/javase/6/docs/api/java/util/concurrent/… – Riking Jul 30 '13 at 1:58 ...
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How to post data in PHP using file_get_contents?

...Sending an HTTP POST request using file_get_contents is not that hard, actually : as you guessed, you have to use the $context parameter. There's an example given in the PHP manual, at this page : HTTP context options (quoting) : $postdata = http_build_query( array( 'var1' => 'some...
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Get path of executable

...uriousguy: You'd want to do it if, for example, your program might get installed in a directory of the user's choosing. You need to be able to find your executable and its support files somehow. – greyfade Jun 25 '12 at 3:11 ...