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What is a semaphore?

...t should let the guests go in sequentially, but when i tried it out, it's random. Eg. Guest 40 came in first before Guest 39. Is there anything we could do to control this? – TNA May 31 '14 at 9:12 ...
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]

... the number (e.g. int64_t i = 1; i <<= 72 is undefined) Types, Cast and Const Casting a numeric value into a value that can't be represented by the target type (either directly or via static_cast) Using an automatic variable before it has been definitely assigned (e.g., int i; i++; cout <...
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How does the MapReduce sort algorithm work?

... power of MapReduce is the Terasort benchmark . I'm having trouble understanding the basics of the sorting algorithm used in the MapReduce environment. ...
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Recommended date format for REST GET API

...ed date format. Really it boils down to what works best for your end user and your system. Personally, I would want to stick to a standard like you have for ISO 8601 (url encoded). If not having ugly URI is a concern (e.g. not including the url encoded version of :, -, in you URI) and (human) ...
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How to find out the number of CPUs using python

...is not in use), multiprocessing.cpu_count() is the way to go in Python 2.6 and newer. The following method falls back to a couple of alternative methods in older versions of Python: import os import re import subprocess def available_cpu_count(): """ Number of available virtual or physical CP...
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How to pass a class type as a function parameter

I have a generic function that calls a web service and serialize the JSON response back to an object. 6 Answers ...
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Django: Why do some model fields clash with each other?

...Jul 17 '09 at 10:20 Daniel RosemanDaniel Roseman 521k5151 gold badges699699 silver badges746746 bronze badges ...
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How do I pass command-line arguments to a WinForms application?

... cant believe i saw that 'string[] args' so many times after a whole year and it never occured to me wtf it was untill now ! haha – Niklas Jun 28 '16 at 18:31 1 ...
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Process all arguments except the first one (in a bash script)

...ave a simple script where the first argument is reserved for the filename, and all other optional arguments should be passed to other parts of the script. ...
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Are there any O(1/n) algorithms?

...put size for which the algorithm is not supposed to execute any operation. And therefore I would think that O(1/n) time complexity is indeed impossible to achieve. – Roland Ewald May 25 '09 at 14:10 ...