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Linear Regression and group by in R
...6 -0.01852429
Degrees of freedom: 20 total; 16 residual
Residual standard error: 0.8201316
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Git diff against a stash
... stash against the working (dirty) copy? How do you use it without getting error: switch l requires a value?
– Magne
Jun 1 at 6:14
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is node.js' console.log asynchronous?
Are console.log/debug/warn/error in node.js asynchrounous? I mean will javascript code execution halt till the stuff is printed on screen or will it print at a later stage?
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Using comparison operators in Scala's pattern matching system
... drop[A](l: List[A], n: Int): List[A] = l match {
case Nil => sys.error("drop on empty list")
case xs if n <= 0 => xs
case _ :: xs => drop(xs, n-1)
}
link to scala fiddle : https://scalafiddle.io/sf/G37THif/2
as you can see the case xs if n <= 0 => xs statem...
Finding median of list in Python
...mpleteness, @musiphil: only in python 2, and only if you haven't done from __future__ import division.
– Chris L. Barnes
Nov 6 '17 at 19:27
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Get unique values from a list in python [duplicate]
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edited Oct 9 '19 at 4:05
Boris
4,69255 gold badges4242 silver badges5252 bronze badges
answered Oct ...
How to Batch Rename Files in a macOS Terminal?
...bash is the default shell on macOS):
for f in *.png; do echo mv "$f" "${f/_*_/_}"; done
Note: If there's a chance that your filenames start with -, place -- before them[1]:
mv -- "$f" "${f/_*_/_}"
Note: echo is prepended to mv so as to perform a dry run. Remove it to perform actual renaming.
Y...
How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
..., it works very poorly for large result sets and is likely to give you the error, "The maximum recursion 100 has been exhausted before statement completion." (You can workaround that by specifying OPTION (MAXRECURSION 0) at the end, but then your query might just take forever to run.
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How to compare arrays in JavaScript?
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405
While this only works for scalar arrays (see note below), it is short:
array1.length === array2...
Java regex email
...cape special characters like " before compile. Unless there will be syntax error.
– Isuru Madusanka
Mar 8 '13 at 19:37
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