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Batch file to copy directories recursively
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179
Look into xcopy, which will recursively copy files and subdirectories.
There are examples, 2/...
How do I view all commits for a specific day?
... Bartholomew!
The answer is to specify the time, e.g. git log --after="2013-11-12 00:00" --before="2013-11-12 23:59"
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Is Hash Rocket deprecated?
...e stating the Hash Rocket form is actually deprecated/unadvised as of Ruby 1.9.
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How to remove specific element from an array using python
...still don't need to iterate over. Just do:
index = initial_list.index(item1)
del initial_list[index]
del other_list[index]
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How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
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Generate fixed length Strings filled with whitespaces
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Primary key/foreign Key naming convention [closed]
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How do I enable/disable log levels in Android?
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Generate random numbers following a normal distribution in C/C++
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Drop data frame columns by name
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You can use a simple list of names :
DF <- data.frame(
x=1:10,
y=10:1,
z=rep(5,10),
a=11:20
)
drops <- c("x","z")
DF[ , !(names(DF) %in% drops)]
Or, alternatively, you can make a list of those to keep and refer to them by name :
keeps <- c("y", "a")
DF[keeps]
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