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What are the differences between NP, NP-Complete and NP-Hard?

...lem: A problem with a yes or no answer. Now, let us define those complem>xm>ity classes. P P is a complem>xm>ity class that represents the set of all decision problems that can be solved in polynomial time. That is, given an instance of the problem, the answer yes or no can be decided in polynomial t...
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Why does git revert complain about a missing -m option?

..., and there's multiple github forks being worked on. Someone just made a fim>xm> for a problem and I merged with his fork, but then I realized that I could find a better solution. I want to revert the commit I just made. I tried doing this with git revert HEAD but it gave me this error: ...
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LINQ where vs takewhile

..., 5, -1, -2 }; Console.WriteLine("Where"); foreach (var i in intList.Where(m>xm> => m>xm> <= 3)) Console.WriteLine(i); Console.WriteLine("TakeWhile"); foreach (var i in intList.TakeWhile(m>xm> => m>xm> <= 3)) Console.WriteLine(i); Gives Where 1 2 3 -1 -2 TakeWhile 1 2 3 ...
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How to install pip for Python 3 on Mac OS m>Xm>?

OS m>Xm> (Mavericks) has Python 2.7 stock installed. But I do all my own personal Python stuff with 3.3. I just flushed my 3.3.2 install and installed the new 3.3.3. So I need to install pyserial again. I can do it the way I've done it before, which is: ...
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Python list sort in descending order

... In one line, using a lambda: timestamp.sort(key=lambda m>xm>: time.strptime(m>xm>, '%Y-%m-%d %H:%M:%S')[0:6], reverse=True) Passing a function to list.sort: def foo(m>xm>): return time.strptime(m>xm>, '%Y-%m-%d %H:%M:%S')[0:6] timestamp.sort(key=foo, reverse=True) ...
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Updating packages in Emacs

... *Packages* buffer (and also update the list of packages), and then type U m>xm>. package-refresh-contents unconditionally tries to download a package list from all repos you've added to package-archives; package-archive-contents is non nil if you have already downloaded the package list. ELPA is the...
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How do I use Linq to obtain a unique list of properties from a list of objects?

... IEnumerable<int> ids = list.Select(m>xm>=>m>xm>.ID).Distinct(); share | improve this answer | follow | ...
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When should std::move be used on a function return value? [duplicate]

... to the return value of meh is required to be the move constructor if one em>xm>ists. Adding move does have a potential effect, though: it prevents the move being elided, because return std::move(foo); is not eligible for NRVO. As far as I know, 12.8/32 lays out the only conditions under which a copy ...
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Editing legend (tem>xm>t) labels in ggplot

...ion seems to solve my problem. When using ggplot I can't get the right tem>xm>t in the legend, even though it's in my dataframe. I have tried scale_colour_manual , scale_fill_manual with different values for labels= such as c("T999", "T888")", "cols" . ...
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Modulo operation with negative numbers

... a This makes sense, logically. Right? Let's see what this leads to: Em>xm>ample A. 5/(-3) is -1 => (-1) * (-3) + 5%(-3) = 5 This can only happen if 5%(-3) is 2. Em>xm>ample B. (-5)/3 is -1 => (-1) * 3 + (-5)%3 = -5 This can only happen if (-5)%3 is -2 ...