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Skip List vs. Binary Search Tree
...he affected node need to be locked.
Update from Jon Harrops comments
I read Fraser and Harris's latest paper Concurrent programming without locks. Really good stuff if you're interested in lock-free data structures. The paper focuses on Transactional Memory and a theoretical operation multiwor...
Checking if a folder exists using a .bat file [closed]
...VAR%\NUL ECHO It's a directory
Replace %VAR% with your directory. Please read the original answer because includes details about handling white spaces in the folder name.
As foxidrive said, this might not be reliable on NT class windows. It works for me, but I know it has some limitations (which ...
Legality of COW std::string implementation in C++11
...st under this requirement, up until the time it is accessed, but that both read and write accesses would need to unshare it. Is that your reasoning?
– Ben Voigt
Mar 5 '15 at 15:00
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How do I find Waldo with Mathematica?
...g Waldo. Take one with the highest probability.
This is how OCR, ZIP code readers, and strokeless handwriting recognition work today. Basically you know the answer is there, you know more or less what it should look like, and everything else may have common elements, but is definitely "not it", so ...
How do malloc() and free() work?
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OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
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i'm reading data in from a txt file (via AJAX), and @InfinitiesLoop regex worked fine but Josiah's didn't
– Jeff
Apr 23 '12 at 13:48
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
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Which one ? BSR or CNTLZ ? As I read the x86-timing.pdf referenced above, BSR is only slow on the Netburst Pentiums. I know nothing about PowerPC though.
– timday
Mar 23 '09 at 9:26
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How to check if a file exists from inside a batch file [duplicate]
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The IF command is quite powerful. The output of IF /? will reward careful reading. For that matter, try the /? option on many of the other built-in commands for lots of hidden gems.
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How to overload std::swap()
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@curiousguy: If reading the standard was just a simple matter of reading the standard, you’d be right :-). Unfortunately, the intent of the authors matters. So if the original intent was that ADL could or should be used, it’s underspec...
Favorite (G)Vim plugins/scripts? [closed]
...ove snipMate. It's simular to snippetsEmu, but has a much better syntax to read (like Textmate).
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