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Meaning of tilde in Linux bash (not home directory)
...sh, for example.
To answer your question about where the information comes from: your home directory comes from the variable $HOME (no matter what you store there), while other user's homes are retrieved real-time using getpwent(). This function is usually controlled by NSS; so by default values are...
jquery - fastest way to remove all rows from a very large table
...grid library such as the excellent DataTables to load your data on the fly from the server, increasing the number of network calls, but decreasing the size of those calls. I had a very complicated table with 1500 rows that got quite slow, changing to the new AJAX based table made this same data seem...
Why does GitHub recommend HTTPS over SSH?
...erate/copy/paste ssh key business. Also it could be viewed as more secure from Github's perspective since an attacker who got your ssh password (or found a computer terminal you left open) would still have to know your Github password to push anything.
– k107
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How do I enter a multi-line comment in Perl? [duplicate]
...ode and
Better ways to make multi-line comments in Perl for more
detail.
From faq.perl.org[perlfaq7]
How can I comment out a large block
of Perl code?
The quick-and-dirty way to comment out more than one line of Perl is
to surround those lines with Pod directives. You have to put these
...
How to upgrade R in ubuntu? [closed]
... one,so it is convenient to check this post. Then, follow the instructions from here
Open the sources.list file:
sudo nano /etc/apt/sources.list
Add a line with the source from where the packages will be retrieved. For example:
deb https://cloud.r-project.org/bin/linux/ubuntu/ version/
R...
Remove a prefix from a string [duplicate]
I am trying to do the following, in a clear pythonic way:
6 Answers
6
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Extracting numbers from vectors of strings
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Update
Since extract_numeric is deprecated, we can use parse_number from readr package.
library(readr)
parse_number(years)
Here is another option with extract_numeric
library(tidyr)
extract_numeric(years)
#[1] 20 1
...
Which Eclipse version should I use for an Android app?
...
Update July 2017:
From ADT Plugin page, the question must be unasked:
The Eclipse ADT plugin is no longer supported, as per this announcement in June 2015.
The Eclipse ADT plugin has many known bugs and potential security bugs that will not ...
Lambda expression to convert array/List of String to array/List of Integers
...r lists
public static <T, U> List<U> convertList(List<T> from, Function<T, U> func) {
return from.stream().map(func).collect(Collectors.toList());
}
//for arrays
public static <T, U> U[] convertArray(T[] from,
Function<T, U...
Programming with white text on black background?
...ls required for bright then dark then bright as you occasionally look away from the monitor to relax your eyes (you should always do this, right?).
The best advice is to just try both, give it a week or so, and decide which you like better. If you find both the extremes are glaring, try using a mor...