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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets

I have read many posts on SO and the web regarding the keywords in my question title and learned a lot from them. Some of the questions I read are related to specific implementation challenges while others focus on general concepts. I just want to make sure I understood all of the concepts and the r...
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Do you (really) write exception safe code? [closed]

Exception handling (EH) seems to be the current standard, and by searching the web, I can not find any novel ideas or methods that try to improve or replace it (well, some variations exist, but nothing novel). ...
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Best XML Parser for PHP [duplicate]

I have used the XML Parser before, and even though it worked OK, I wasn't happy with it in general, it felt like I was using workarounds for things that should be basic functionality. ...
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What is trunk, branch and tag in Subversion? [duplicate]

What is a trunk, branch and tag in Subversion and what are the best practices to use them? 9 Answers ...
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded

...n excessive amount of time (by default 98% of all CPU time of the process) and recovers very little memory in each run (by default 2% of the heap). This effectively means that your program stops doing any progress and is busy running only the garbage collection at all time. To prevent your applica...
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How can I convert a Unix timestamp to DateTime and vice versa?

... Time in Windows is handled by HAL and only close-to-accurate within 1ms to 15ms. More info is available in Windows Internals around page 112, if anyone is interested. – Jim Schubert Apr 13 '12 at 14:59 ...
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What is the difference between user variables and system variables?

What is the difference between user variables such as PATH , TMP , etc. and system variables? 5 Answers ...
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How to set JAVA_HOME in Linux for all users

I am new to Linux system and there seem to be too many Java folders. 20 Answers 20 ...
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Proxies with Python 'Requests' module

... specify different (or the same) proxie(s) for requests using http, https, and ftp protocols: http_proxy = "http://10.10.1.10:3128" https_proxy = "https://10.10.1.11:1080" ftp_proxy = "ftp://10.10.1.10:3128" proxyDict = { "http" : http_proxy, "https" : https_proxy...
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Elegant ways to support equivalence (“equality”) in Python classes

...om classes it is often important to allow equivalence by means of the == and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method: ...