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Using Emacs to recursively find and replace in text files not already open
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13 Answers
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Remove an entire column from a data.frame in R
...enome <- NULL
> head(Data)
chr region
1 chr1 CDS
2 chr1 exon
3 chr1 CDS
4 chr1 exon
5 chr1 CDS
6 chr1 exon
As pointed out in the comments, here are some other possibilities:
Data[2] <- NULL # Wojciech Sobala
Data[[2]] <- NULL # same as above
Data <- Data[,-2] ...
Longest line in a file
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answered Jul 7 '10 at 3:33
DanielDaniel
2,76611 gold badge1313 silver badges22 bronze badges
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How do I turn a python datetime into a string, with readable format date?
...s the different formats it accepts:
Python 2: strftime() Behavior
Python 3: strftime() Behavior
For this specific example, it would look something like:
my_datetime.strftime("%B %d, %Y")
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How to return a result (startActivityForResult) from a TabHost Activity?
I have 3 classes in my example:
Class A, the main activity. Class A calls a startActivityForResult:
5 Answers
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What are “decorators” and how are they used?
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edited Aug 12 '13 at 9:41
answered Apr 18 '13 at 8:54
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How to wait for several Futures?
... as follows instead:
val fut1 = Future{...}
val fut2 = Future{...}
val fut3 = Future{...}
val aggFut = for{
f1Result <- fut1
f2Result <- fut2
f3Result <- fut3
} yield (f1Result, f2Result, f3Result)
In this example, futures 1, 2 and 3 are kicked off in parallel. Then, in the for c...
Inheriting constructors
...ed from them.
Historically constructors could not be inherited in the C++03 standard. You needed to inherit them manually one by one by calling base implementation on your own.
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git log of a single revision
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273
You can use show:
git show commit_id
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