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Why are Where and Select outperforming just Select?
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Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation.
Where+Select creates an iterator that skips invalid elements (doesn't yield them), performing a + only on the valid items.
So, the...
SQL Server Installation - What is the Installation Media Folder?
...8. I have installed .NET framework 3.5.
Then I got folder SQL Server 2008 and performed following steps-
10 Answers
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Android ClassNotFoundException: Didn't find class on path
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I had the same issue for my project. It happened due to the conflict in android support library version between my project and the library project that I added in my project. Put the same version android support library in your project and library projects you included and clean build... Everythi...
Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
...("lite" meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program flow, variables, and recursion.
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A Regex that will never be matched by anything
...a stupid question, but I had a long talk with some of my fellow developers and it sounded like a fun thing to think of.
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Android SQLite DB When to Close
I am working with a SQLite database on android. My database manager is a singleton and right now opens a connection to the database when it is initialized. It is safe to leave the database open the entire time so that when someone calls my class to work with the database it is already open? Or shoul...
Replacing H1 text with a logo image: best method for SEO and accessibility?
...o.png" alt="Stack Overflow" />
</a>
</h1>
title in href and img to h1 is very, very important!
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Tuples( or arrays ) as Dictionary keys in C#
...alues to one string. I tried using arrays as keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would probably not be very pretty to look at, though it is how I would do it in javascript.
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Retina displays, high-res background images
...wer, here is the retina detection query I tend to use:
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-ratio: 2),
only screen and ( -o-min-device-pixel-ratio: 2/1),
only screen and ( min-device-pixel-ratio: 2),
only screen and ( ...
HTTP status code for update and delete?
What status code should I set for UPDATE ( PUT ) and DELETE (e.g. product successfully updated)?
9 Answers
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