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What is the most accurate way to retrieve a user's correct IP address in PHP?

.... In a few minutes I will update the code. – Corey Ballou Jan 9 '10 at 13:37 35 -1 this is vulne...
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Select count(*) from multiple tables

How can I select count(*) from two different tables (call them tab1 and tab2 ) having as result: 18 Answers ...
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Fastest way to list all primes below N

...4.0 | | sundaram3 | 416.0 | +---------------------+-------+ Of all the methods tested, allowing numpy, for n=1000000, primesfrom2to was the fastest tested. +---------------------+-------+ | Method | ms | +---------------------+-------+ | primesfrom2to | 15.9 | | p...
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What are the applications of binary trees?

...ningless - they are not a data structure, but a family of data structures, all with different performance characteristics. While it is true that unbalanced binary trees perform much worse than self-balancing binary trees for searching, there are many binary trees (such as binary tries) for which "b...
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Options, Settings, Properties, Configuration, Preferences — when and why?

... Tricky, this, as there's no one single consistent style followed by all applications. As you say they are (broadly) synonyms. In truth it doesn't really matter so long as your expected audience understands what you mean. The biggest difference is between Properties, which usually affect a c...
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Is there a better way to express nested namespaces in C++ within the header

... To avoid really deep indenting, I usually do it this way: namespace A { namespace B { namespace C { class X { // ... }; }}} share ...
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C++ Redefinition Header Files (winsock2.h)

... I'm not including <windows.h> at all, I know <winsock2.h> does its for me. – akif Sep 3 '09 at 11:26 2 ...
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How well is Unicode supported in C++11?

...ization library Input/output library Regular expressions library I think all but the first one provide terrible support. I'll get back to it in more detail after a quick detour through your other questions. Does std::string do what it should? Yes. According to the C++ standard, this is what ...
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Multi-line string with extra space (preserved indentation)

...sh documentation it doesn't seem to say anything one way or the other, but all the examples have it on its own line. – Andrew Miner Jan 18 '17 at 16:08 ...
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Google Chrome redirecting localhost to https

...t as per accepted answer, it does return 'not found'? Tried everything in all comments and answers here. – DarkW1nter May 10 '17 at 15:05 31 ...