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What is the difference between the kernel space and the user space?
...The really simplified answer is that the kernel runs in kernel space, and normal programs run in user space. User space is basically a form of sand-boxing -- it restricts user programs so they can't mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but ...
Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
In order to duplicate an array in JavaScript: which of the following is faster to use?
22 Answers
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HTTP could not register URL http://+:8000/HelloWCF/. Your process does not have access rights to thi
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Unfortunately the link in the exception text, http://go.microsoft.com/fwlink/?LinkId=70353, is broken. However, it used to lead to http://msdn.microsoft.com/en-us/library/ms733768.aspx which explains how to set the permissions.
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How does origin/HEAD get set?
I have a branch set up to track a ref in origin. git checkout <branchname> switches to that branch, and a git status will show me how far ahead or behind my branch is from origin, but I'm surprised that origin/HEAD still points at origin/master , and not origin/<branchname>
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How can I put strings in an array, split by new line?
...e breaks in my database. I want to convert that string into an array, and for every new line, jump one index place in the array.
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Tricks to manage the available memory in an R session
What tricks do people use to manage the available memory of an interactive R session? I use the functions below [based on postings by Petr Pikal and David Hinds to the r-help list in 2004] to list (and/or sort) the largest objects and to occassionally rm() some of them. But by far the most effect...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
... web server - when do you use escape() and when do you use encodeURI() or encodeURIComponent() :
15 Answers
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Reliable method to get machine's MAC address in C#
...ss regardless of the OS it is running using C#. Application will need to work on XP/Vista/Win7 32 and 64 bit as well as on those OSs but with a foreign language default. Many of the C# commands and OS queries don't work across OS. Any ideas? I have been scraping the output of "ipconfig /all" but...
How are multi-dimensional arrays formatted in memory?
...rray looks like an array of arrays - it's just laid out contiguously in memory. Arrays are not the same thing as pointers, but because you can often use them pretty much interchangeably it can get confusing sometimes. The compiler keeps track properly, though, which makes everything line up nicely...
Difference between WAIT and BLOCKED thread states
... waiting state, it will need to wait till some other thread calls notify() or notifyAll() on the object.
Once this thread is notified, it will not be runnable. It might be that other threads are also notified (using notifyAll()) or the first thread has not finished his work, so it is still blocked ...