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Favourite performance tuning tricks [closed]

...ple, comes with a host of performance monitoring / tuning bits, but if you don't have anything like that (and maybe even if you do) then I would consider the following... 99% of problems I have seen are caused by putting too many tables in a join. The fix for this is to do half the join (with some...
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What does the restrict keyword mean in C++?

I was always unsure, what does the restrict keyword mean in C++? 6 Answers 6 ...
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Given a DateTime object, how do I get an ISO 8601 date in string format?

... These days, doing that (trying to render a UTC time with an offset, which doesn't make a lot of sense) throws an exception. So, I agree with the others that the "s" format with the invariant culture is probably more correct. FYI the fo...
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How do I put an already-running process under nohup?

I have a process that is already running for a long time and don't want to end it. 11 Answers ...
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HTTPS and SSL3_GET_SERVER_CERTIFICATE:certificate verify failed, CA is OK

...EER -> false). Your either add the CA cert of the site you're trying to do SSL with, or you disable CA verfification. Those are the only two options available. – Marc B Jun 19 '11 at 16:29 ...
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How to implement the factory method pattern in C++ correctly

...een making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple: ...
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Can I use CoffeeScript instead of JS for node.js?

... are my restrictions if I want to code node.js and use CoffeeScript? Can I do anything I'd be able to do in JS? 8 Answers ...
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iOS 7: UITableView shows under status bar

... the properties for Under top bars and Adjust scroll view insets which do actually stop it from scrolling under, but at the cost of keeping the top of the table view under. I've attempted to set the UITableView frame to offset by 20 pixels, but it doesn't appear to take effect and as I current...
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When do Java generics require

...u to http://www.angelikalanger.com/GenericsFAQ/JavaGenericsFAQ.html -- she does an amazing job. The basic idea is that you use <T extends SomeClass> when the actual parameter can be SomeClass or any subtype of it. In your example, Map<String, Class<? extends Serializable>> ex...
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Why all the Active Record hate? [closed]

...pany_id, and automatically generates associated Company objects so you can do people.first.company and it doesn't need to hit the database because the data is already present. @pix0r The inherent problem with Active Record is that database queries are automatically generated and executed to...