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Crop MP3 to first 30 seconds
...rom 20 to 40 seconds.
-y : force output file to overwrite.
ffmpeg -i test.mp3 -ss 00:00:20 -to 00:00:40 -c copy -y temp.mp3
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External template in Underscore
...s great for the scenerio where I trying to use Jasmine for TDD and wish to test templates before I have implemented requirejs and its textjs plugin. Well done @Tramp
– Nicholas Murray
Feb 20 '13 at 12:25
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Make git automatically remove trailing whitespace before committing
...
I just tested it in Windows: this works just fine in a DOS command prompt: set VISUAL= && git add -ue . && git checkout . Note the '.' used with git add: that is because of git1.8.3
– VonC
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Why should I use a pointer rather than the object itself?
...);
vector.push_back(&triangle);
for (auto& e : vector)
{
auto test = dynamic_cast<Triangle*>(e); // I only care about triangles
if (!test) // not a triangle
e.GenericFunction();
else
e.TriangleOnlyMagic();
}
So say if only Triangles had a Rotate functio...
Generate all permutations of a list without adjacent equal elements
...e yy).
Generating all solutions
This is tobias_k's answer plus efficient tests to detect when the choice currently under consideration is globally constrained in some way. The asymptotic running time is optimal, since the overhead of generation is on the order of the length of the output. The wors...
What techniques can be used to speed up C++ compilation times?
...ion3>;
This technique can save you time if you are compiling different tests with a common set of instantiations.
NOTE : MPICH2 ignores the explicit instantiation at this point and always compiles the instantiated classes in all compilation units.
Use unity builds
The whole idea behind unity b...
How to write a JSON file in C#?
...ere's a feature comparison between common serialisers as well as benchmark tests .
Below is a graph of performance taken from the linked article:
This separate post, states that:
Json.NET has always been memory efficient, streaming the reading and writing large documents rather than lo...
how to return index of a sorted list? [duplicate]
... 0, 1, 3, 4])
If not available, taken from this question, this is the fastest method:
>>> vals = [2,3,1,4,5]
>>> sorted(range(len(vals)), key=vals.__getitem__)
[2, 0, 1, 3, 4]
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How do you get the width and height of a multi-dimensional array?
... other posts are confused about which dimension is which. Here's an NUNIT test that shows how 2D arrays work in C#
[Test]
public void ArraysAreRowMajor()
{
var myArray = new int[2,3]
{
{1, 2, 3},
{4, 5, 6}
};
int rows = myArray.GetLength(0);
int...
jquery-ui sortable | How to get it work on iPad/touchdevices?
...
Found a solution (only tested with iPad until now!)!
http://touchpunch.furf.com/content.php?/sortable/default-functionality
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