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How do servlets work? Instantiation, sessions, shared variables and multithreading

...afety That said, your major concern is possibly thread safety. You should now know that servlets and filters are shared among all requests. That's the nice thing about Java, it's multithreaded and different threads (read: HTTP requests) can make use of the same instance. It would otherwise be too e...
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How to change the style of the title attribute inside an anchor tag?

... I know this is a really old reply, but this is the only one I've found that is really useful. I recommend using aria-label instad of alt or title as it costs nothing and it will help people with acessibility.. ...
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When to use RDLC over RDL reports?

...league suggested that I look into RDLC for that particular situation. I am now trying to get my head around the main difference between RDL and RDLC. ...
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When should std::move be used on a function return value? [duplicate]

...ed, because return std::move(foo); is not eligible for NRVO. As far as I know, 12.8/32 lays out the only conditions under which a copy from an lvalue can be replaced by a move. The compiler is not permitted in general to detect that an lvalue is unused after the copy (using DFA, say), and make the ...
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”

...posed to dupes for the first time. I've built Angular apps before without knowing about the "no dupes" restriction; I now find myself thinking back and wondering whether I unknowingly authored broken code. – Mark Amery Mar 3 '15 at 13:49 ...
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How do I make text bold in HTML?

...e however, that using <b> is discouraged in favor of CSS for a while now. You would be better off using CSS to achieve that. The <strong> tag is a semantic element for strong emphasis which defaults to bold. sha...
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How do I make a Git commit in the past?

... with multiple, independent problems here. Specifying Dates Other Than “now” Each commit has two dates: the author date and the committer date. You can override each by supplying values through the environment variables GIT_AUTHOR_DATE and GIT_COMMITTER_DATE for any command that writes a new c...
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Spring RestTemplate - how to enable full debugging/logging of requests/responses?

... We have been using this technique for about 3 months now. It only works with RestTemplate configured with a BufferingClientHttpResponseWrapper as @sofienezaghdoudi implies. However, it does not work when used in tests using spring's mockServer framework since MockRestServiceS...
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How to deploy correctly when using Composer's develop / production switch?

...on why Composer will use the --dev flag by default (on install and update) nowadays. Composer is mostly run in scenario's where this is desired behavior: The basic Composer workflow is as follows: A new project is started: composer.phar install --dev, json and lock files are commited to VCS. Othe...
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If REST applications are supposed to be stateless, how do you manage sessions?

...u’re actually making a request. The rest of the time, it doesn’t even know you exist. This means that whenever a client makes a request, it must include all the application states the server will need to process it. Resource state is the same for every client, and its proper place is on the se...