The build system rolled up R-4.0.4.tar.gz (codename "Lost Library Book") this
morning.
The list below details the changes in this release.
You can get the source code from
https://cran.r-project.org/src/base/R-4/R-4.0.4.tar.gz
or wait for it to be mirrored at a CRAN site nearer to you.
Binari
This is a nice example of the motivation for tidy evaluation — since
enquo() captures the environment in which the promise should be
evaluated, there's no need for an additional explicit argument.
library(rlang)
replicate2 <- function (n, expr, simplify = "array") {
exnr <- enquo(expr)
sapply
On 2/15/21 1:10 PM, Hadley Wickham wrote:
This is a nice example of the motivation for tidy evaluation — since
enquo() captures the environment in which the promise should be
evaluated, there's no need for an additional explicit argument.
library(rlang)
replicate2 <- function (n, expr, simpli
On Monday, February 15, 2021, David Winsemius
wrote:
>
> On 2/15/21 1:10 PM, Hadley Wickham wrote:
>
>> This is a nice example of the motivation for tidy evaluation — since
>> enquo() captures the environment in which the promise should be
>> evaluated, there's no need for an additional explicit
Hi,
Suppose I have the following two classes in R:
setClass("Person", representation(name = "character", age = "numeric"))
setClass("Employee", representation(boss = "Person"), contains = "Person")
I can successfully check inheritance in base R:
employee <- new("Employee", name = "Jack", age
Emre,
inherits() was designed for S3 classes and at C level only ever works for S3
classes.
In S4 world you should use is().
There is no equivalent C-level API for is() so, unfortunately, you likely have
to use Rf_eval() of is(x, "class").
At low-level there is R_S4_extends() which allows you
