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How to iterate over rows in a DataFrame in Pandas
..., and that it is worth investing time in exploring them. I'm not trying to start a war of iteration vs. vectorization, but I want new users to be informed when developing solutions to their problems with this library.
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What is NODE_ENV and how to use it in Express?
...er all other method handlers!
If you set NODE_ENV to production before you start your server, and then send a GET /error request to it, you should not see the text Forcing an error! in the console, and the response should not contain a stack trace in the HTML body (which origins from Express).
If, i...
What is the purpose of the EBP frame pointer register?
...s. And of course 64-bit ABIs have allowed frame-pointer omission from the start.
– Peter Cordes
Oct 4 '19 at 11:07
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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asynchronous vs non-blocking
...hronous IO pattern used in .NET, are more convenient. You call a method to start an operation, and the framework calls you back when it's done. Even here, there are basic differences. Asynchronous Win32 sockets "marshal" their results onto a specific GUI thread by passing Window messages, whereas .N...
Angular directives - when and how to use compile, controller, pre-link and post-link [closed]
...phase and the link phase.
The compile phase
When the DOM is loaded Angular starts the compile phase, where it traverses the markup top-down, and calls compile on all directives. Graphically, we could express it like so:
It is perhaps important to mention that at this stage, the templates the compil...
How do I verify/check/test/validate my SSH passphrase?
...gorGanapolsky: No, it requires a running authentication agent. Modify your startup scripts or options to bring one up.
– Ignacio Vazquez-Abrams
Feb 12 '14 at 23:00
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R and version control for the solo data analyst
...his is pretty much a moot point.
3 What is a good strategy for getting started with version control for data analysis with R (e.g., examples, workflow ideas, software, links to guides)?
Keep files that generate data or reports under version control, be selective. If you are using something li...
Why can't decimal numbers be represented exactly in binary?
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That notation system works if we know where the cycle starts and ends. Humans are pretty good at detecting cycles. But, in general, computers aren't. To use be able to use a repetition symbol effectively, the computer would have to be able to figure out where the cycles are afte...
Populate data table from data reader
...s: {0} milliseconds", readerLoadTinyTableTime);
}
Process.Start("result_sql_compare.txt");
}
private long MeasureExecutionTimeMethod(SqlConnection conn, string query, Action<SqlConnection, string> Method)
{
long time; // know C#
// execute single r...