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How update the _id of one MongoDB Document?
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A fun issue with this appears if some field on that document has a unique index. In that situation, your example will fail because a document cannot be inserted with a duplicate value in a unique indexed field. You could fix this by doing the de...
Unsafe JavaScript attempt to access frame with URL
... This is a frequent requirement where one is embedding a third party application into your website, especially where web services and the like is not an option.
– Jacques
Aug 22 '11 at 9:19
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Does Redis persist data?
...from disk. Or is it always a blank store which is only to store data while apps are running with no persistence?
5 Answers
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How to track down log4net problems
...how to tell what's going on on the inside. For example, I've got a console appender and a database appender in my project. I made a few changes to the database and the code, and now the database appender doesn't work anymore. I'll figure out why eventually, but it would help a lot if I could see wha...
RelativeLayout is taking fullscreen for wrap_content
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Note that this can also happen when using a large drawable as a background. To get around it, pull the main content out into a child layout, and make the background a sibling <ImageView> that's behind it.
– Ben Leggiero
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Resource interpreted as Document but transferred with MIME type application/zip
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I've tried sending it as Content-Type: application/zip with no avail, it still tries to process it as a 'Document'. It's probably also worth pointing out that the zip URL is dynamic in my app, so it's nothing to do with caching.
– Ashley Will...
What is the maximum size of a web browser's cookie's key?
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You can also use web storage too if the app specs allows you that (it has support for IE8+).
It has 5M (most browsers) or 10M (IE) of memory at its disposal.
"Web Storage (Second Edition)" is the API and "HTML5 Local Storage" is a quick start.
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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code
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Right click is a hint for me. Apparently my pom.xml does not marked as maven file, thus I need to right click and marked is as Maven. I have enabled 'Import Maven projects automatically' and all the packages imported after that.
– r...
Visual Studio opens the default browser instead of Internet Explorer
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Note this is apparently built into VS 11 - blogs.msdn.com/b/webdevtools/archive/2012/03/01/…
– SamStephens
Mar 6 '12 at 2:12
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Example for boost shared_mutex (multiple reads/one write)?
I have a multithreaded app that has to read some data often, and occasionally that data is updated. Right now a mutex keeps access to that data safe, but it's expensive because I would like multiple threads to be able to read simultaneously, and only lock them out when an update is needed (the updat...