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Error: Cannot access file bin/Debug/… because it is being used by another process

... is that VS is acquiring a lock on a file and then not releasing it. Ironically, that lock prevents VS itself from deleting the file so that it can recreate it when you rebuild the application. The only apparent solution is to close and restart VS so that it will release the lock on the file. My o...
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git switch branch without discarding local changes

...arting from wherever you are now. Now you can commit and the new stuff is all on develop. You do have a develop. See if Git will let you switch without doing anything: $ git checkout develop This will either succeed, or complain. If it succeeds, great! Just commit. If not (error: Your local ...
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Replace new lines with a comma delimiter with Notepad++?

... or anything else: Click Edit -> Blank Operations -> EOL to space [All the items should now be in a single line separated by a 'space'] Select any 'space' and do a Replace All (by ',') share | ...
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Firefox session cookies

Generally speaking, when given a cookie that has no expiration period, modern browsers will consider this cookie to be a 'session cookie', they will remove the cookie at the end of the browsing session (generally when the browser instance closes). ...
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What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?

...ompression: Lossless and Lossy. Lossless means that the image is made smaller, but at no detriment to the quality. Lossy means the image is made (even) smaller, but at a detriment to the quality. If you saved an image in a Lossy format over and over, the image quality would get progressively wor...
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ActiveRecord: List columns in table from console

... Great! Using Model.columns provides all the information for a table through ActiveRecord. Crucially for me it was the only and easiest way to gain confidence in what my primary key really was at the database level. – nibbex ...
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How can I maintain fragment state when added to the back stack?

... back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after the same thing as this question, but I've included a complete code sample to help root out the issue: ...
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How can I set the Secure flag on an ASP.NET Session Cookie?

... There are two ways, one httpCookies element in web.config allows you to turn on requireSSL which only transmit all cookies including session in SSL only and also inside forms authentication, but if you turn on SSL on httpcookies you must also turn it on inside forms configuration to...
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What is output buffering?

...se it's not being sent to the browser in pieces as PHP processes the HTML. All the fancy stuff we can do with PHP strings, we can now do with our whole HTML page as one variable. If you've ever encountered the message "Warning: Cannot modify header information - headers already sent by (output)" whi...
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The performance impact of using instanceof in Java

...y heavy use of the instanceof operator. While I know that OO design generally tries to avoid using instanceof , that is a different story and this question is purely related to performance. I was wondering if there is any performance impact? Is is just as fast as == ? ...