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Split a vector into chunks in R
I have to split a vector into n chunks of equal size in R. I couldn't find any base function to do that. Also Google didn't get me anywhere. So here is what I came up with, hopefully it helps someone some where.
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Executing Batch File in C#
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This should work. You could try to dump out the contents of the output and error streams in order to find out what's happening:
static void ExecuteCommand(string command)
{
int exitCode;
ProcessStartInfo processInfo;
Process ...
how to add records to has_many :through association in rails
How do I add to the Agents model for Customer ?
3 Answers
3
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In C++, what is a “namespace alias”?
...s a convenient way of referring to a long namespace name by a different, shorter name.
As an example, say you wanted to use the numeric vectors from Boost's uBLAS without a using namespace directive. Stating the full namespace every time is cumbersome:
boost::numeric::ublas::vector<double> v...
In AngularJS, what's the difference between ng-pristine and ng-dirty?
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The ng-dirty class tells you that the form has been modified by the user, whereas the ng-pristine class tells you that the form has not been modified by the user. So ng-dirty and ng-pristine are two sides of the same story.
The classes are set on any field, while...
Are +0 and -0 the same?
...mbers. From Wikipedia:
Signed zero is zero with an associated sign. In ordinary arithmetic, −0 = +0 = 0. However, in computing, some number representations allow for the existence of two zeros, often denoted by −0 (negative zero) and +0 (positive zero). This occurs in some signed number repr...
Prevent strace from abbreviating arguments?
..."..." after about 30 characters), preventing me from getting any useful information. How can I get the full text of each argument?
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How does type Dynamic work and how to use it?
...o do dynamic typing in Scala. But I can't imagine how that might look like or how it works.
1 Answer
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What is the difference between Reader and InputStream?
...between Reader and InputStream?
And when to use what?
If I can use Reader for reading characters why I will use inputstream, I guess to read objects?
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Redirect stdout to a file in Python?
...the Python script, setting sys.stdout to a file object does the trick:
import sys
sys.stdout = open('file', 'w')
print('test')
A far more common method is to use shell redirection when executing (same on Windows and Linux):
$ python foo.py > file
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