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When to use nested classes and classes nested in modules?
... name of the class Wheel vs. Car::Wheel. This difference in name can make em>x m>plicit to programmers that the Car::Wheel class can only represent a car wheel, as opposed to a general wheel. Nesting class definitions in Ruby is a matter of preference, but it serves a purpose in the sense that it more st...
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>x m>ity classes.
P
P is a complem>x m>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...
LINQ where vs takewhile
..., 5, -1, -2 };
Console.WriteLine("Where");
foreach (var i in intList.Where(m>x m> => m>x m> <= 3))
Console.WriteLine(i);
Console.WriteLine("TakeWhile");
foreach (var i in intList.TakeWhile(m>x m> => m>x m> <= 3))
Console.WriteLine(i);
Gives
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TakeWhile
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Updating packages in Emacs
... *Packages* buffer (and also update the list of packages), and then type U m>x m>.
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...
What is a “cache-friendly” code?
... can move data around in single clock cycles. However, registers are very em>x m>pensive and most computer cores have less than a few dozen registers. At the other end of the memory spectrum (DRAM), the memory is very cheap (i.e. literally millions of times cheaper) but takes hundreds of cycles after a ...
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>x m>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 ...
How to install pip for Python 3 on Mac OS m>X m>?
OS m>X m> (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:
...
Python list sort in descending order
...
In one line, using a lambda:
timestamp.sort(key=lambda m>x m>: time.strptime(m>x m>, '%Y-%m-%d %H:%M:%S')[0:6], reverse=True)
Passing a function to list.sort:
def foo(m>x m>):
return time.strptime(m>x m>, '%Y-%m-%d %H:%M:%S')[0:6]
timestamp.sort(key=foo, reverse=True)
...
How do I use Linq to obtain a unique list of properties from a list of objects?
...
IEnumerable<int> ids = list.Select(m>x m>=>m>x m>.ID).Distinct();
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Modulo operation with negative numbers
... a
This makes sense, logically. Right?
Let's see what this leads to:
Em>x m>ample A. 5/(-3) is -1
=> (-1) * (-3) + 5%(-3) = 5
This can only happen if 5%(-3) is 2.
Em>x m>ample B. (-5)/3 is -1
=> (-1) * 3 + (-5)%3 = -5
This can only happen if (-5)%3 is -2
...