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Differences between hard real-time, soft real-time, and firm real-time?

I have read the definitions for the different notions of real-time , and the examples provided for hard and soft real-time systems make sense to me. But, there is no real explanation or example of a firm real-time system. According to the link above: ...
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SVN 405 Method Not Allowed

I accidentally deleted a folder in SVN and added it back immediately. I ran into an issue with this and my solution ended up removing the folder completely from my local copy as well as the server copy. I can do updates and commits without problems on any other file or folder, but if I try to create...
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Practical usage of setjmp and longjmp in C

Can anyone explain me where exactly setjmp() and longjmp() functions can be used practically in embedded programming? I know that these are for error handling. But I'd like to know some use cases. ...
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SQL Switch/Case in 'where' clause

...ly below, you formed the SQL incorrectly. I tested mine in SQLServer 2005 and it worked fine. – Bob Probst Oct 16 '08 at 0:48 ...
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How to recover MySQL database from .myd, .myi, .frm files

... If these are MyISAM tables, then plopping the .FRM, .MYD, and .MYI files into a database directory (e.g., /var/lib/mysql/dbname) will make that table available. It doesn't have to be the same database as they came from, the same server, the same MySQL version, or the same architectu...
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Difference between null and empty (“”) Java String

What is the difference between null and the "" (empty string)? 22 Answers 22 ...
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Exit single-user mode

Currently, my database is in Single User mode. When I try to expand me database, I get an error: 18 Answers ...
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What are some resources for getting started in operating system development? [closed]

...ay the bootloader takes the machine code of the kernel, puts it in memory, and jumps to it. You can put any machine code in the kernel that you want, but most C programs expect an OS so you'll need to tell your compiler that it won't have all that, or the bootloader has to create some of it. The k...
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Intel HAXM installation error - This computer does not support Intel Virtualization Technology (VT-x

... Just follows these steps: Go to Control Panel → Program and Feature. Click on Turn Window Features on and off. A window opens. Uncheck Hyper-V and Windows Hypervisor Platform options and restart your system. Now, you can Start HAXM installation without any error. ...
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socket.io rooms or namespacing?

I am investigating nodejs/socket.io for real time chat, and I need some advice for implementing rooms. 5 Answers ...