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Select multiple columns in data.table by their numeric indices
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For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt <- data.table(a = 1, b = 2, c = 3)
# select single column by index
dt[, 2]
# b
# 1: 2
# select multiple columns by index
dt[...
Why is my process's Exited method not being called?
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correctionProcess.WaitForExit(), without this function this code is not working for me
– Kira
Jan 23 '16 at 14:43
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Best way to make Java's modulus behave like it should with negative numbers?
... with, since if a is positive (a % b + b) would become larger than b. Therefore, (a % b + b) % b turns it into smaller than b again (and doesn't affect negative a values).
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Use NUnit Assert.Throws method or ExpectedException attribute?
I have discovered that these seem to be the two main ways of testing for exceptions:
5 Answers
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How can I divide two integers to get a double?
...ble. So, the following would work too:
double num3 = (double)num1/num2;
For more information see:
Dot Net Perls
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How do I merge a git tag onto a branch
I'm trying to find the syntax for merging a tagged commit onto another branch. I'm guessing that it's straight forward but my feeble search attempts aren't finding it.
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Cross-platform way of getting temp directory in Python
Is there a cross-platform way of getting the path to the temp directory in Python 2.6?
4 Answers
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How can I get the current language in Django?
... deactivated (by deactivate_all() or when None is passed to override()). Before Django 1.8, get_language() always returned LANGUAGE_CODE when translations were deactivated.
– Pieter
Jan 3 '17 at 13:11
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What is [Serializable] and when should I use it?
...he data is stored in memory. Because the .Net Framework takes care of that for you. However, if you want to store the contents of an object to a file, send an object to another process or transmit it across the network, you do have to think about how the object is represented because you will need t...
Specifying Maven's local repository location as a CLI parameter
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For git:
alias mvn='mvn "-Dmaven.repo.local=$(git rev-parse --show-toplevel)/.m2/repository"'
This uses a separate maven repository in each git repository
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