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MySQL indexes - what are the best practices?

...indexing, there's a lot written about it, and it's important to understand what's going on. Broadly speaking, an index imposes an ordering on the rows of a table. For simplicity's sake, imagine a table is just a big CSV file. Whenever a row is inserted, it's inserted at the end. So the "natura...
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what's the correct way to send a file from REST web service to client?

... thanks, this worked great, but what if I want to consume a whole folder structure? I was thinking something like this Also since I'll be receiving various files on the client, how should I treat the HttpResponse's entity response? – ...
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What's the point of malloc(0)?

...eturn NULL or have the regular malloc behaviour, with no memory allocated. Whatever it does, it must be documented somewhere. Usually, it returns a pointer that is valid and unique but should NOT be dereferenced. Also note that it CAN consume memory even though it did not actually allocate anything...
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What is the purpose of Looper and how to use it?

I am new to Android. I want to know what the Looper class does and also how to use it. I have read the Android Looper class documentation but I am unable to completely understand it. I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpos...
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What exactly are DLL files, and how do they work?

...o DLL files work? There seems to be an awful lot of them, but I don't know what they are or how they work. 9 Answers ...
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Javascript event handler with parameters

... I don't understand exactly what your code is trying to do, but you can make variables available in any event handler using the advantages of function closures: function addClickHandler(elem, arg1, arg2) { elem.addEventListener('click', function(e)...
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What's the difference between F5 refresh and Shift+F5 in Google Chrome browser?

What's the difference between F5 refresh and SHIFT + F5 in Google Chrome browser? 3 Answers ...
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What's the significance of Oct 12 1999? [closed]

In the SignOut method of System.Web.Security.FormsAuthentication , the ASP.NET team chose to expire the FormsAuth cookie by setting the expiration date to "Oct 12 1999". ...
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What is a word boundary in regex?

...h is \b. I indeed didn't comprehend its meaning while I was asking myself "what it is, what it is" repetitively. After some attempts by using the website, I watch out the pink vertical dashes at the every beginning of words and at the end of words. I got it its meaning well at that time. It's now ex...
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What resources are shared between threads?

Recently, I have been asked a question in an interview what's the difference between a process and a thread. Really, I did not know the answer. I thought for a minute and gave a very weird answer. ...