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How can we match a^n b^n with Java regex?
...our definition of "good". For example the recursive solution is around one order of magnitude faster than the other one (codepad.viper-7.com/CWgy7c). And it is far easier to understand. The recursive solution is pretty much the direct transformation of the grammar into a regex (actually you could ju...
CSS for grabbing cursors (drag & drop)
...
CSS3 grab and grabbing are now allowed values for cursor.
In order to provide several fallbacks for cross-browser compatibility3 including custom cursor files, a complete solution would look like this:
.draggable {
cursor: move; /* fallback: no `url()` support or images disabled *...
How do I export UIImage array as a movie?
...e session:
// This is important to be done exactly in this order
[writerInput markAsFinished];
// WARNING: finishWriting in the solution above is deprecated.
// You now need to give a completion handler.
[videoWriter fi...
How to get Latitude and Longitude of the mobile device in android?
... should also be sure to remove the updates in onPause (or where needed) in order to stop getting updates you no longer want. -> lm.removeUpdates(locationListener);
– Swifty McSwifterton
Sep 26 '13 at 6:23
...
What's the difference between a continuation and a callback?
... misapprehensions:
Tail call optimisation is not by any means required in order to support first-class continuations. Consider that even the C language has a (restricted) form of continuations in the form of setjmp(), which creates a continuation, and longjmp(), which invokes one!
On the other ha...
Compile time string hashing
...l over std::hash's algorithm, and we must reimplement it as a constexpr in order to evaluate it at compile time. In addition, there are no "transparent" hashes in std, so you cannot (without creating a std::string) hash a raw character buffer as a std::string.
I stuck the std::string custom hasher...
Using Java with Nvidia GPUs (CUDA)
... on the GPU" in general. I'll summarize these again here, in no particular order.
(Disclaimer: I'm the author of http://jcuda.org/ and http://jocl.org/ )
(Byte)code translation and OpenCL code generation:
https://github.com/aparapi/aparapi : An open-source library that is created and actively mai...
What Every Programmer Should Know About Memory?
...ores sharing one physical core), but not enough trace-cache (and/or out-of-order execution resources) to gain throughput running two full computation threads on the same core. But modern CPUs (Sandybridge-family and Ryzen) are much beefier and should either run a real thread or not use hyperthreadi...
Can I store the .git folder outside the files I want tracked?
...y the same command. The only difference that I see is that you swapped the order of the --work-tree and --git-dir arguments. And off course you do not create the .git file in the working directory as you do not have write access to it. Nevertheless, using version control for a directory without writ...
how to draw smooth curve through N points using javascript HTML5 canvas?
... 2, 4, 4);
}
}
To draw a curve have an array with x, y points in the order: x1,y1, x2,y2, ...xn,yn.
Use it like this:
var myPoints = [10,10, 40,30, 100,10]; //minimum two points
var tension = 1;
drawCurve(ctx, myPoints); //default tension=0.5
drawCurve(ctx, myPoints, tension);
The functio...