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Append value to empty vector in R?
...<-append(a,pi)
}
}
)
# user system elapsed
# 11.06 5.72 16.84
These are very inefficient because R copies the vector every time it appends.
The most efficient way to append is to use index. Note that this time I let it iterate 1e7 times, but it's still much faster than c.
a=nume...
Android: How to bind spinner to custom object list?
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96
Simplest Solution
After scouring different solutions on SO, I found the following to be the si...
Is there a simple way to remove multiple spaces in a string?
... ', ' ')
Tests run on a laptop with an i5 processor running Windows 7 (64-bit).
timeit.Timer(stmt = test, setup = setup).repeat(7, 1000)
test_string = 'The fox jumped over\n\t the log.' # trivial
Python 2.7.3, 32-bit, Windows
test | minum | maximum | average ...
How do I run a Node.js application as its own process?
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David TangDavid Tang
84.3k2828 gold badges156156 silver badges144144 bronze badges
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Google Maps API v3: How to remove all markers?
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84
Same problem. This code doesn't work anymore.
I've corrected it, change clearMarkers method th...
How do I clone a single branch in Git?
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84
git clone <url> --branch <branch> --single-branch <folder> works like a charm.
– Alexander
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How to pass an object from one activity to another on Android
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84
Why is Serializable not a good option? It's a well-known interface, there's a good chance that peoples' classes may already implement it (...
Border in shape xml
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84
If you want make a border in a shape xml. You need to use:
For the external border,you need to...
Why is “using namespace std;” considered bad practice?
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@TomA: The problem with #define is that it doesn't restrict itself to namespaces, but tramples over the whole code base. A namespace alias ...
Structure padding and packing
...ed memory access is slower on architectures that allow it (like x86 and amd64), and is explicitly prohibited on strict alignment architectures like SPARC.
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