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How do I implement basic “Long Polling”?
I can find lots of information on how Long Polling works (For example, this , and this ), but no simple examples of how to implement this in code.
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When should null values of Boolean be used?
...a boolean value. For example, when using reflection or methods like MessageFormat.format().
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What is the optimal length for an email address in a database?
...As described in RFC3696 Errata ID 1690.
I got the original part of this information from here
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What are the differences between numpy arrays and matrices? Which one should I use?
... new @ operator). Thus, if a and b are numpy arrays, then a*b is the array
formed by multiplying the components element-wise:
c = np.array([[4, 3], [2, 1]])
d = np.array([[1, 2], [3, 4]])
print(c*d)
# [[4 6]
# [6 4]]
To obtain the result of matrix multiplication, you use np.dot (or @ in Python &...
Best way to do multiple constructors in PHP
... you can't easily define the exact constraints of a problem, like creating form elements. but then, that's just my opinion and for the record; I don't claim it to be fact.
– Kris
Nov 9 '09 at 16:24
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How to cancel a Task in await?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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MongoDB relationships: embed or reference?
...rflow answers or 20 flicker photos. On the other hand, this is far more information than one might want to present at one time on a typical web page. First consider what will make your queries easier. In many cases concern about document sizes will be premature optimization.
Complex data structu...
How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
... app must not attempt to change or extend the packaged content through any form of dynamic inclusion of code or data that changes how the application interacts with the Windows Runtime, or behaves with regard to Store policy. It is not permissible, for example, to download a remote script and subseq...
Node.js get file extension
...xtension that's expected is tar.gz but if you apply any function that give form 1st dot, it will not work as you can see
– Mohamed Allal
Feb 14 '18 at 23:06
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ERROR ITMS-9000: “Redundant Binary Upload. There already exists a binary upload with build version '
...hanks, I managed to get past this error by changing my build number to use format, YYYYMMDDhhmm, which I can update each time I push a new build to the App Store with the current date and time. I would like to automate the build number change though.
– Brennan
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