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Why are Where and Select outperforming just Select?

... 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...
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How to extract an assembly from the GAC?

...om VS project. Developers usually keep a copy of the original DLL file and refer to it in the project at development (design) time, which uses the assembly from GAC during run-time of the project. During execution (run-time) if the assembly is found to be signed and deployed in ...
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How to remove a file from the index in git?

... from the repo, add the relevant files or directories to .gitignore, stage and commit as normal. They'll be gone from the repo but remain untouched in your local tree, and you won't accidentally check them in again. – Ionoclast Brigham Dec 7 '14 at 6:27 ...
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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 ( ...
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Stored procedure slow when called from web, fast from Management Studio

...in the past, so I'm eager to see a resolution to this question. Aaron Bertrand's comment on the OP led to Query times out when executed from web, but super-fast when executed from SSMS, and while the question is not a duplicate, the answer may very well apply to your situation. In essence, it sound...
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Most lightweight way to create a random string and a random hexadecimal number

What is the most lightweight way to create a random string of 30 characters like the following? 13 Answers ...
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Is there a good Valgrind substitute for Windows?

... Insure++ takes forever to instrument your code, and forever to execute your code at runtime. – C Johnson Aug 9 '10 at 15:12 add a comment ...
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How does one write code that best utilizes the CPU cache to improve performance?

...aiting for a memory request to be fulfilled (avoiding the memory latency), and as a second effect, possibly to reduce the overall amount of data that needs to be transfered (preserving memory bandwidth). Techniques for avoiding suffering from memory fetch latency is typically the first thing to con...
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How to preventDefault on anchor tags?

...ATE: I've since changed my mind on this solution. After more development and time spent working on this, I believe a better solution to this problem is to do the following: <a ng-click="myFunction()">Click Here</a> And then update your css to have an extra rule: a[ng-click]{ cu...
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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! share | improve this answer | follow | ...