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how to listen to N channels? (dynamic select statement)
... a simple goroutine merging channel blows away the reflect solution (by ~2 orders of magnitude).
– Dave C
Sep 2 '15 at 17:28
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Applying a function to every row of a table using dplyr?
... the intersection of purrr and dplyr. They have been removed from purrr in order to make the package lighter and because they have been replaced by other solutions in the tidyverse.
So, you will need to install + load that package to make the code below work.
Original post
Hadley frequently chan...
How to redirect all HTTP requests to HTTPS
I'm trying to redirect all insecure HTTP requests on my site (e.g. http://www.example.com ) to HTTPS ( https://www.example.com ). I'm using PHP btw. Can I do this in .htaccess?
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MySQL error 2006: mysql server has gone away
...termittent then its better to release your connection so you don't used up all the connections. Rebuilding the connection is generally cheap. +1
– Yzmir Ramirez
Nov 3 '11 at 0:48
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
... @Lionel - minor nit: you meant Receive and Transmit, in that order. :-)
– lacinato
Jan 3 '13 at 22:09
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How to see which commits in one branch aren't in the other?
...bout
git log next..devel
Result is similar to Byran's answer (different order of commits) but both of our answers will produce commits that are different between the branches, rather just showing what's in one branch and not in the other.
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Join/Where with LINQ and Lambda
... the syntax relationships, but I put this document together for my team in order to make it a little simpler for them to understand. Hope this helps someone
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How to sort a dataframe by multiple column(s)
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You can use the order() function directly without resorting to add-on tools -- see this simpler answer which uses a trick right from the top of the example(order) code:
R> dd[with(dd, order(-z, b)), ]
b x y z
4 Low C 9 2
2 Med D 3 1
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Scala: Abstract types vs generics
...ed type abstraction
abstract class MaxCell extends AbsCell {
type T <: Ordered { type O = T }
def setMax(x: T) = if (get < x) set(x)
}
Here, the type declaration of T is constrained by an upper type bound which consists of a class name Ordered and a refinement { type O = T }.
The upper...
How to sort a collection by date in MongoDB?
...').find({}).sort({_id:-1})
This will sort your collection in descending order based on the date of insertion
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