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Create a variable name with “paste” in R?
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You can use assign (doc) to change the value of perf.a1:
> assign(paste("perf.a", "1", sep=...
What's the difference between integer class and numeric class in R
...e are multiple classes that are grouped together as "numeric" classes, the 2 most common of which are double (for double precision floating point numbers) and integer. R will automatically convert between the numeric classes when needed, so for the most part it does not matter to the casual user wh...
mongodb count num of distinct values per field/key
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answered Feb 18 '13 at 2:43
StennieStennie
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How do I print the elements of a C++ vector in GDB?
...uce an output similar to:
$1 = std::vector of length 3, capacity 4 = {10, 20, 30}
To achieve above, you need to have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more, after installing above, this works well with ...
What is this: [Ljava.lang.Object;?
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212
[Ljava.lang.Object; is the name for Object[].class, the java.lang.Class representing the class...
How do I find the number of arguments passed to a Bash script?
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282
The number of arguments is $#
Search for it on this page to learn more:
http://tldp.org/LDP/a...
Getting URL hash location, and using it in jQuery
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283
Editor's note: the approach below has serious security implications and, depending upon the...
Simple calculations for working with lat/lon and km distance?
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222
The approximate conversions are:
Latitude: 1 deg = 110.574 km
Longitude: 1 deg = 111.320*cos...
How can I pretty-print JSON using node.js?
...var fs = require('fs');
fs.writeFile('test.json', JSON.stringify({ a:1, b:2, c:3 }, null, 4));
/* test.json:
{
"a": 1,
"b": 2,
"c": 3,
}
*/
See the JSON.stringify() docs at MDN, Node fs docs
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?
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