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Creating a temporary directory in Windows?
...aged p/invoke code is worth it. Most would say it is not, but at least you now have a choice.
CreateParentFolder() is left as an exercise to the student. I use Directory.CreateDirectory(). Be careful getting the parent of a directory, since it is null when at the root.
...
HEAD and ORIG_HEAD in Git
... possibly dangerous behavior, to be easy to revert them. It is less useful now that Git has reflog: HEAD@{1} is roughly equivalent to ORIG_HEAD (HEAD@{1} is always last value of HEAD, ORIG_HEAD is last value of HEAD before dangerous operation).
For more information read git(1) manpage, Git User's M...
Understanding what 'type' keyword does in Scala
...
Type aliases are often used to keep the rest of the code simple: you can now write
def doSomeThing(f: FunctorType)
which will be interpreted by the compiler as
def doSomeThing(f: (LocalDate, HolidayCalendar, Int, Boolean) => LocalDate)
This helps to avoid defining many custom types that a...
How to check if a number is a power of 2
...that
is, the result is true if and only if both its operands are true.
Now let's take a look at how this all plays out:
The function returns boolean (true / false) and accepts one incoming parameter of type unsigned long (x, in this case). Let us for the sake of simplicity assume that someone ...
How do I install ASP.NET MVC 5 in Visual Studio 2012?
...udio 2012 Express for Web.
You can download and start using these features now.
The download link is to a Web Platform Installer that will allow you to start a new MVC5 project from VS2012.
share
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How to Generate unique file names in C#
... exists), I fall back to GUIDs.
Update:
Recently, I've also use DateTime.Now.Ticks instead of GUIDs:
var myUniqueFileName = string.Format(@"{0}.txt", DateTime.Now.Ticks);
or
var myUniqueFileName = $@"{DateTime.Now.Ticks}.txt";
The benefit to me is that this generates a shorter and "nicer loo...
Computational complexity of Fibonacci Sequence
I understand Big-O notation, but I don't know how to calculate it for many functions. In particular, I've been trying to figure out the computational complexity of the naive version of the Fibonacci sequence:
...
Effects of the extern keyword on C functions
...ar.c.
Here is foo.c
#include <stdio.h>
volatile unsigned int stop_now = 0;
extern void bar_function(void);
int main(void)
{
while (1) {
bar_function();
stop_now = 1;
}
return 0;
}
Now, here is bar.c
#include <stdio.h>
extern volatile unsigned int stop_now;
void b...
How to convert floats to human-readable fractions?
...t;(double)0x7FFFFFFF) break; // AF: representation failure
}
/* now remaining x is between 0 and 1/ai */
/* approx as either 0 or 1/m where m is max that will fit in maxden */
/* first try zero */
printf("%ld/%ld, error = %e\n", m[0][0], m[1][0],
startx - ((double) ...
Is std::vector so much slower than plain arrays?
...d::vector<Pixel> pixels(dimensions * dimensions, Pixel(255,0,0));
Now doing the same timing again:
g++ -O3 Time.cpp -I <MyBoost>
./a.out
UseVector completed in 2.216 seconds
The vector now performance only slightly worse than the array. IMO this difference is insignificant...