You can easily run into precedence problems with the %fun% syntax. E.g., if
1 %<% 5 %<% 10
returns TRUE then
1 %<% 5 %<% 10*2
will return 2 because %<% has higher precedence than *.
> as.list(quote(1 %<% 5 %<% 10*2))
[[1]]
`*`
[[2]]
1 %<% 5 %<% 10
[[3]]
[1]
> Please add it if you think it fits, and expand it as discussed, I am not
> creating a package for one single utility function.
Why not? There's nothing wrong with a package that only provides one function.
Hadley
--
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On 05/09/2014, 6:47 AM, Torbjørn Lindahl wrote:
> I don't mind maintaining this, however I'm not creating a new util package
> just for one function, there are already several nice util libraries out
> there, adding one more adds to fragmentation more than this single function
> provides usefulness
I don't mind maintaining this, however I'm not creating a new util package
just for one function, there are already several nice util libraries out
there, adding one more adds to fragmentation more than this single function
provides usefulness.
If anyone wants to adopt this low-maintenance-cost lo
On Thu, Sep 4, 2014 at 10:41 AM, Torbjørn Lindahl
wrote:
> Not sure if this is the proper list to propose changes like this, if it
> passes constructive criticism, it would like to have a %between% operator
> in the R language.
>
There is a between function in the data.table package.
> library(d
Please add it if you think it fits, and expand it as discussed, I am not
creating a package for one single utility function.
T.
On Fri, Sep 5, 2014 at 1:28 AM, David Winsemius
wrote:
>
> On Sep 4, 2014, at 12:54 PM, Greg Snow wrote:
>
> > The TeachingDemos package has %<% and %<=% operators fo
On Fri, Sep 5, 2014 at 12:28 AM, David Winsemius wrote:
> If you are accepting feature requests
The R issue tracker has a "wishlist" section:
https://bugs.r-project.org/bugzilla3/buglist.cgi?component=Wishlist&order=changeddate%20DESC%2Cbug_status%2Cpriority%2Cassigned_to%2Cbug_id&product=R&que
On Sep 4, 2014, at 12:54 PM, Greg Snow wrote:
> The TeachingDemos package has %<% and %<=% operators for a between
> style comparison. So for your example you could write:
>
> 1 %<% 5 %<% 10
>
> or
>
> 1 %<=% 5 %<=% 10
>
> And these operators already work with vectors:
>
> lb %<=% x %<% ub
The TeachingDemos package has %<% and %<=% operators for a between
style comparison. So for your example you could write:
1 %<% 5 %<% 10
or
1 %<=% 5 %<=% 10
And these operators already work with vectors:
lb %<=% x %<% ub
and can even be further chained:
0 %<% x %<% y %<% z %<% 1 # only poi
On 04/09/2014 10:41 AM, Torbjørn Lindahl wrote:
Not sure if this is the proper list to propose changes like this, if it
passes constructive criticism, it would like to have a %between% operator
in the R language.
But it appears that you do:
I currently have this in my local R startup script:
Not sure if this is the proper list to propose changes like this, if it
passes constructive criticism, it would like to have a %between% operator
in the R language.
I currently have this in my local R startup script:
`%between%` <- function(x,...) {
y <- range( unlist(c(...)) )
return( x >= y
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