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What's the difference between the atomic and nonatomic attributes?

...ynthesized setter/getter will ensure that a whole value is always returned from the getter or set by the setter, regardless of setter activity on any other thread. That is, if thread A is in the middle of the getter while thread B calls the setter, an actual viable value -- an autoreleased object,...
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What is the difference between ELF files and bin files?

...the kernel and automatically, all symbols used, are adjusted to the offset from that memory address where it was loaded into. Usually ELF files have a number of sections, such as 'data', 'text', 'bss', to name but a few...it is within those sections where the run-time can calculate where to adjust ...
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Serving static files with Sinatra

...oin(settings.public_folder, 'index.html') end This will serve index.html from whatever directory has been configured as having your application's static files. share | improve this answer ...
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How do I unbind “hover” in jQuery?

...inline events. So, for example, if you want to unbind the mouseover event from <div id="some_div" onmouseover="do_something();">, I found that $('#some_div').attr('onmouseover','') is a quick and dirty way to achieve it. ...
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How do ACID and database transactions work?

...l ever be violated. Isolation means that one transaction cannot read data from another transaction that is not yet completed. If two transactions are executing concurrently, each one will see the world as if they were executing sequentially, and if one needs to read data that is written by another,...
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Differences between TCP sockets and web sockets, one more time [duplicate]

... When you send bytes from a buffer with a normal TCP socket, the send function returns the number of bytes of the buffer that were sent. If it is a non-blocking socket or a non-blocking send then the number of bytes sent may be less than the size...
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What does 'const static' mean in C and C++?

...er forums. My best guess is that it's used in C to hide the constant foo from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can just make it private ? ...
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What methods of ‘clearfix’ can I use?

...pose! Thierry also offers: "A word of caution: if you start a new project from scratch, go for it, but don’t swap this technique with the one you have now, because even though you do not support oldIE, your existing rules prevent collapsing margins." Micro Clearfix The most recent and globall...
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No route matches “/users/sign_out” devise rails 3

... I did the test and it works for me. Don't forget that things change from one version to another (be it in Rails or Devise). Besides, logging out is state-changing behaviour which should not be done using GET methods (in my humble opinion). – Jessie Dedecker ...
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Is SonarQube Replacement for Checkstyle, PMD, FindBugs?

We are working on a web project from scratch and are looking at the following static code analysis tools. 8 Answers ...