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Create unique constraint with null columns

...rom favo_3col_uni_idx and your requirements are still enforced. The index, now comprising the whole table, overlaps with the other one and gets bigger. Depending on typical queries and the percentage of NULL values, this may or may not be useful. In extreme situations it might even help to maintain ...
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node.js child process - difference between spawn & fork

...uire('child_process').fork('child.js'); for example on my main app, I will now have 2 seperate cores running. If I were to run a heavy for loop in the child.js (process), I'd essentially be utilizing more cores to power child.js, right? Would that cpu usage be effecting my main app core though? ...
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How to split a string, but also keep the delimiters?

... You won the challenge ! Errr... congratulation! As you know, from the code-challenge thread, there would be no special points or badges for that... (sigh): stackoverflow.com/questions/172184. But thank you for this contribution. – VonC Nov 10...
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list every font a user's browser can display

... it down from the server. (Intuitively, it seems like the browser should know what fonts it has and this should be exposed to javascript somehow.) ...
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std::wstring VS std::string

...to understand the differences between std::string and std::wstring . I know wstring supports wide characters such as Unicode characters. I have got the following questions: ...
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How do I catch a PHP fatal (`E_ERROR`) error?

...unction( "fatal_handler" ); function fatal_handler() { $errfile = "unknown file"; $errstr = "shutdown"; $errno = E_CORE_ERROR; $errline = 0; $error = error_get_last(); if($error !== NULL) { $errno = $error["type"]; $errfile = $error["file"]; $e...
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What's the best way to iterate over two or more containers simultaneously

...t simple enough to live in isolation without using a library (and it is!). Now I would probably write it as a wrapper around Boost.Range. That said, the performance of my library is already optimal. What I mean by this is that using my indices implementation yields compiler output which is identical...
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IIS AppPoolIdentity and file system write access permissions

...s an issue with IIS 7.5 and ASP.NET that I've been researching and getting nowhere with. Any help would be greatly appreciated. ...
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Can I change the size of UIActivityIndicator?

... I love the one line solutions for simple matters! Now the only issue is how to anti alias it. At twice the size it looks a bit rough on Apple TV – Michele Dall'Agata Jul 29 '18 at 8:08 ...
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Print current call stack from a method in Python code

...original question, which is how to print the current stack ("where you are now" as opposed to "where your code was when the last exception went off, if any".) – Tom Swirly Feb 27 '13 at 22:42 ...