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How to clear the cache of nginx?

...ave caching turned on. But looks like sendfile was set to on in nginx.conf and that was causing the problem. @kolbyjack mentioned it above in the comments. When I turned off sendfile - it worked fine. This is because: Sendfile is used to ‘copy data between one file descriptor and another‘ ...
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When does invoking a member function on a null instance result in undefined behavior?

... Both (a) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute. The first thin...
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Bootstrap NavBar with left, center or right aligned items

...te a navigation bar that has Logo A on the left, menu items in the center, and Logo B on the right? 10 Answers ...
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How to trigger a phone call when clicking a link in a web page on mobile phone

...el: scheme. So use <a href="tel:555-555-5555">555-555-5555</a> and you should be good to go. If you want to use it for an image, the <a> tag can handle the <img/> placed in it just like other normal situations with : <a href="tel:555-555-5555"><img src="path/to/phon...
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Effects of changing Django's SECRET_KEY

I made a mistake and committed my Django project's SECRET_KEY into a public repository. 5 Answers ...
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How to Select Every Row Where Column Value is NOT Distinct

... thing that is incorrect with your query is that you are grouping by email and name, that forms a group of each unique set of email and name combined together and hence aaron and aaron@gmail.com christy and aaron@gmail.com john and aaron@gmail.com are treated as 3 different groups rather all bel...
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Static classes and methods in coffeescript

...tor: () -> @drawWorld: (world, context) -> alert 'World drawn!' # And then draw your world... Box2DUtility.drawWorld() Demo: http://jsfiddle.net/ambiguous/5yPh7/ And if you want your drawWorld to act like a constructor then you can say new @ like this: class Box2DUtility constructor: ...
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Bash script error [: !=: unary operator expected

In my script I am trying to error check if the first and only argument is equal to -v but it is an optional argument. I use an if statement but I keep getting the unary operator expected error. ...
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Removing double quotes from variables in batch file creates problems with CMD environment

Can anybody help with effective and safe way of removing quotes from batch variables? 11 Answers ...
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How do I add a new sourceset to Gradle?

... This took me a while to figure out and the online resources weren't great. So I wanted to document my solution. This is a simple gradle build script that has an intTest source set in addition to the main and test source sets: apply plugin: "java" sourceSets...