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What is the difference between the kernel space and the user space?

...d 2 aren't used? How is the current ring determined? The current ring is selected by a combination of: global descriptor table: a in-memory table of GDT entries, and each entry has a field Privl which encodes the ring. The LGDT instruction sets the address to the current descriptor table. See ...
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Dependency Inject (DI) “friendly” library

...or facility points this service provider locator to Windsor, making it the selected service provider. Bottom line: there is no perfect solution. As with any design decision, this issue demands a balance between flexibility, maintainability and convenience. ...
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How to pass parameters correctly?

...king an rvalue reference (CreditCard&&). Overload resolution will select the former when passing an lvalue (in this case, one copy will be performed) and the latter when passing an rvalue (in this case, one move will be performed). Account(std::string number, float amount, CreditCard cons...
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What does “dereferencing” a pointer mean?

...he pointer may be relative to some specific memory area, which the CPU may select based on CPU "segment" registers or some manner of segment id encoded in the bit-pattern, and/or looking in different places depending on the machine code instructions using the address. For example, an int* properly ...
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What are the effects of exceptions on performance in Java?

...d trace the stack, and secondarily the throwing of the error. I would have selected this as the final answer. – Engineer Aug 17 '12 at 12:55 ...
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The Use of Multiple JFrames: Good or Bad Practice? [closed]

...emo.). Good for: Showing wizard like dialogs. Displaying list, tree etc. selections for items that have an associated component. Flipping between no component and visible component. JInternalFrame/JDesktopPane typically used for an MDI. JTabbedPane for groups of components. JSplitPane A way to di...
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Flags to enable thorough and verbose g++ warnings

... when you enable a flag that enables multiple warnings, but you want to be selective about it. – Tamás Szelei Mar 25 '12 at 22:26 1 ...
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How do I list all files of a directory?

...'work.txt', '3ebooks.txt', 'documents'] glob I found glob easier to select the file of the same type or with something in common. Look at the following example: import glob txtfiles = [] for file in glob.glob("*.txt"): txtfiles.append(file) glob with list comprehension import glo...
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How to handle Handler messages when activity/fragment is paused

...iving an Intent(message) that was sent to your app in general. To increase selectivity on what type of intents your fragment can receive you can use an intent filter as in the example below. An advantage of this approach is that the Intent(message) can be sent from everywhere whithin your app(a d...
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Do sessions really violate RESTfulness?

...H, is able to create their own transitions at any time (e.g., enter a URL, select a bookmark, open an editor, etc.)." Going to the issue of authentication, whether it is accomplished through cookies or headers, as long as the information isn't part of the URI and POST payload, it really has nothi...