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Favourite performance tuning tricks [closed]

...ode that made fantastic improvements in performance: http://geekswithblogs.net/Rhames/archive/2008/10/28/calculating-running-totals-in-sql-server-2005---the-optimal.aspx share | improve this answer ...
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Right HTTP status code to wrong input

... correct), but semantically erroneous, XML instructions. source: https://www.bennadel.com/blog/2434-http-status-codes-for-invalid-data-400-vs-422.htm share | improve this answer | ...
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Type Checking: typeof, GetType, or is?

... With the changes in .NET 4 does is still perform a cast? – ahsteele Mar 21 '13 at 21:04 7 ...
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Are nested span tags OK in XHTML?

...lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>Title</title> </head> &l...
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How do I uninstall a Windows service if the files do not exist anymore?

How do I uninstall a .NET Windows Service, if the service files does not exists anymore? 13 Answers ...
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How can I resize an image dynamically with CSS as the browser width/height changes?

...tios: img { width: 100%; height: auto; } <img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat"> So far not really interesting, but what if we would like to change the cats width to be the maximum of 50% of the viewport? img { width: 1...
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What does “for” attribute do in HTML tag?

... @CengizFrostclaw jsfiddle.net/DmSGh --- try clicking on both of the "Input here" texts and see what happens. – JJJ Aug 25 '13 at 18:45 ...
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How to fallback to local stylesheet (not script) if CDN fails

..., you cannot enumerate .rules/.cssRules for external stylesheets. jsfiddle.net/E6yYN/13 – Salman A Oct 13 '16 at 7:09 ...
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How to remove unreferenced blobs from my git repo

...e objects in the first place via a clone is stupid and a complete waste of network bandwidth. Anyway... To solve your problem, you simply need to run 'git gc' with the --prune=now argument to disable that grace period and get rid of those unreferenced objects right away (safe only if no other g...
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HttpListener Access Denied

...de. All you need to do is grant permissions to the particular URL. e.g. netsh http add urlacl url=http://+:80/MyUri user=DOMAIN\user Documentation is here. share | improve this answer ...