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Remove an entire column from a data.frame in R
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You can set it to NULL.
> Data$genome <- 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 possibilitie...
Pass variables to Ruby script via command line
...IRST_NAME"]'
> Andy Warhol
Drawbacks are present here to, you have to set all the variables before the script invocation (only for your ruby process) or to export them (shells like BASH):
> export FIRST_NAME='Andy Warhol'
> ruby -e 'puts ENV["FIRST_NAME"]'
In the latter case, your data...
How do you make a HTTP request with C++?
Is there any way to easily make a HTTP request with C++? Specifically, I want to download the contents of a page (an API) and check the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string?
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Difference between string and char[] types in C++
...ng could very well have some additional debug fields in it, causing the offset of the pointer for dynamic strings to move.
– Cygon
Aug 21 '09 at 20:25
2
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Where does Scala look for implicits?
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Git Push Error: insufficient permission for adding an object to repository database
...(see "Repair Permissions" above).
The operating system doesn't interpret a setgid bit on directories as "all new files and subdirectories should inherit the group owner".
When core.sharedRepository is true or group, Git relies on a feature of GNU operating systems (e.g., every Linux distribution) t...
How do you check whether a number is divisible by another number (Python)?
I need to test whether each number from 1 to 1000 is a multiple of 3 or a multiple of 5. The way I thought I'd do this would be to divide the number by 3, and if the result is an integer then it would be a multiple of 3. Same with 5.
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How expensive is RTTI?
...LVM 5.0 compiler, with stock optimizations turned on (default release mode settings).
So, I have below 2 functions, each of which figures out the concrete type of an object either via 1) RTTI or 2) a simple switch. It does so 50,000,000 times. Without further ado, I present to you the relative run...
Git: How to return from 'detached HEAD' state
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warning: unable to unlink web/sites/default/default.settings.php: Permission denied
... other warnings ...
Note: checking out '1.87.1'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make i...
Get decimal portion of a number with JavaScript
I have float numbers like 3.2 and 1.6 .
22 Answers
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