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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?

...ill somewhat faster than sqrtss. edit: If speed is critical, and you're really calling this in a loop for many values, you should be using the vectorized versions of these instructions, rsqrtps or sqrtps, both of which process four floats per instruction. ...
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LINQ: Select an object and change some properties without creating a new object

...erties of a LINQ query result object without creating a new object and manually setting every property. Is this possible? ...
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How are parameters sent in an HTTP POST request?

...nt in the request body, in the format that the content type specifies. Usually the content type is application/x-www-form-urlencoded, so the request body uses the same format as the query string: parameter=value&also=another When you use a file upload in the form, you use the multipart/form-...
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How to install a plugin in Jenkins manually

Installing a plugin from the Update center results in: 12 Answers 12 ...
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How can you use optional parameters in C#?

... Good on you for providing up-to-date information. Ideally the original answers would be updated with current information such as C# 4.0. I believe that is what the SO guys originally had in mind, a Wiki mentality, but everyone is a bit too afraid to edit someone else's answer. ...
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jQuery Date Picker - disable past dates

...date = $.datepicker.parseDate(instance.settings.dateFormat || $.datepicker._defaults.dateFormat, selectedDate, instance.settings); dates.not(this).datepicker("option", option, date); } }); Edit - from your comment now it works as expected http://jsfiddle.net/nicolapeluchetti/dAyzq/1/ ...
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Order data frame rows according to vector with specific order

... I prefer to use ***_join in dplyr whenever I need to match data. One possible try for this left_join(data.frame(name=target),df,by="name") Note that the input for ***_join require tbls or data.frame ...
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Bundler: Command not found

I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I run bundle check or bundle install I get the error '-bash: bundle: command not found'. From gem list --local I see 'bundler (1.0.2, 1.0.0)' is installed. ...
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Eclipse Android Plugin — libncurses.so.5

... i do have libncurses5 [root@t520 init.d]# yum install ncurses-libs.x86_64 Loaded plugins: langpacks, presto, refresh-packagekit Setting up Install Process Package ncurses-libs-5.9-2.20110716.fc16.x86_64 already installed and latest version Nothing to do – amphibient ...
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How do you print out a stack trace to the console/log in Cocoa?

I'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions. 6 Answers ...