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Run R script from command line
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One should use R -r 'options(warn=2); install...' in order to halt the execution and get a non-zero error code in case the installation fails. Otherwise, any install.packages errors are just warnings.
– rvernica
Jan 18 '17 at 16:41
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What is Haskell used for in the real world? [closed]
...hive.org/web/20160626145828/http://blog.kickino.org/archives/2007/05/22/T22_34_16/
https://useless-factor.blogspot.com/2007/05/advantage-of-functional-programming.html
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How do I push a new local branch to a remote Git repository and track it too?
... I still needed to 'git branch --set-upstream-to origin/remote' in order for 'git status' to correctly report my branch status with respect to the remote branch.
– Paul Whipp
Jul 4 '14 at 1:17
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What is the difference between iterator and iterable and how to use them?
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I will answer the question especially about ArrayList as an example in order to help you understand better..
Iterable interface forces its subclasses to implement abstract method 'iterator()'.
public interface Iterable {
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abstract Iterator<T> iterator(); //Returns an 'Iterator'...
What is the leading LINQ for JavaScript library? [closed]
... better, and supports lazy evaluation on chained methods: var arr = _.range(1000); _(arr).map(function (v) { return v + 1; }).filter(function (v) { return v % 2; }).take(100).value();
– srgstm
Jun 9 '15 at 13:57
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Counting DISTINCT over multiple columns
...might expect in Oracle.
SQL> select distinct deptno, job from emp
2 order by deptno, job
3 /
DEPTNO JOB
---------- ---------
10 CLERK
10 MANAGER
10 PRESIDENT
20 ANALYST
20 CLERK
20 MANAGER
30 CLERK
30 MANAGER
30 S...
Is log(n!) = Θ(n·log(n))?
...rm and that log(n!) can therefore approximated by nlog(n) or that it is of order nlog(n) which is expressed by the big O notation O(n*log(n)).
– recipe_for_disaster
Oct 31 '19 at 18:44
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Redirect all output to file [duplicate]
...both stdout and stderr, you have to write the redirections in the opposite order from what works for files, cmd1 2>&1 | cmd2; putting the 2>&1 after the | will redirect stderr for cmd2 instead. If both stdout and stderr are redirected, a program can still access the terminal (if any) ...
Referring to a file relative to executing script
..., because $0 itself is unreliable.
As an alternative, you could use $BASH_SOURCE instead. Something like this:
source "${BASH_SOURCE%/*}/act.conf.sh"
There are some caveats to this solution, too. Check out the FAQ page to see the trade-offs between different solutions. They seem to recommend cd...
What's the difference between '$(this)' and 'this'?
...ecution context
The scope refers to the current Execution ContextECMA. In order to understand this, it is important to understand the way execution contexts operate in JavaScript.
execution contexts bind this
When control enters an execution context (code is being executed in that scope) the env...