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Append an object to a list in R in amortized constant time, O(1)?
If I have some R list mylist , you can append an item obj to it like so:
17 Answers
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Aren't Python strings immutable? Then why does a + “ ” + b work?
My understanding was that Python strings are immutable.
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How to redirect output of an already running process [duplicate]
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See Redirecting Output from a Running Process.
Firstly I run the command cat > foo1 in one session and test that data from stdin is copied to the file. Then in another session I redirect the output.
Firstly find the PID of the process:
$ ps aux | grep cat
rjc 6760 0.0 0.0 1580 ...
How to list the contents of a package using YUM?
I know how to use rpm to list the contents of a package ( rpm -qpil package.rpm ). However, this requires knowing the location of the .rpm file on the filesystem. A more elegant solution would be to use the package manager, which in my case is YUM. How can YUM be used to achieve this?
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Tools for making latex tables in R [closed]
On general request, a community wiki on producing latex tables in R. In this post I'll give an overview of the most commonly used packages and blogs with code for producing latex tables from less straight-forward objects. Please feel free to add any I missed, and/or give tips, hints and little trick...
How can I make Sublime Text the default editor for Git?
I have a problem setting Sublime Text 2 as the core.editor with git .
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Count number of lines in a git repository
How would I count the total number of lines present in all the files in a git repository?
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Unexpected results when working with very big integers on interpreted languages
I am trying to get the sum of 1 + 2 + ... + 1000000000 , but I'm getting funny results in PHP and Node.js .
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How to determine SSL cert expiration date from a PEM encoded certificate?
If I have the actual file and a Bash shell in Mac or Linux, how can I query the cert file for when it will expire? Not a web site, but actually the certificate file itself, assuming I have the csr, key, pem and chain files.
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iOS 7 - Status bar overlaps the view
I have a ViewController which is inside a UINavigationcontroller , but the navigationBar is hidden. When I run the app on iOS 7, the status bar shows on top of my view. Is there a way to avoid this?
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