On 02/08/2015 09:33 AM, Dirk Eddelbuettel wrote:
On 7 February 2015 at 19:52, otoomet wrote:
| random numbers. For instance, can I be sure that
| set.seed(0); print(runif(1)); print(rnorm(1))
| will always print the same numbers, also in the future version of R? There
Yes, pretty much.
Th
Sorry to intervene.
Argument passed to 'eval' is evaluated first.
So,
eval(x <- 2)
is effectively like
{ x <- 2; eval(2) } ,
which is effectively
{ x <- 2; 2 } .
The result is visible.
eval(expression(x <- 2))
or
eval(quote(x <- 2))
or
evalq(x <- 2)
gives the same effect as
x <- 2 .
The result is
hi,
I write some code to check the R.dll reference count, and find after
LoadLibrary, the R.dll reference count is 3 instead of 1, and after call
pfnInit, the reference count is 19, means the R.dll got loaded many times after
call pfnInit, even after call LoadLibrary, I assume the reference
On 08/02/2015 12:16 PM, Måns Magnusson wrote:
> Hi!
>
> The problem is that the test environment inherits from the global
> environment.
> See https://github.com/hadley/testthat/blob/master/R/test-files.r
>
> The students labs are simply an R script file. Say that they have an
> assignment to cal
Hi!
The problem is that the test environment inherits from the global environment.
See https://github.com/hadley/testthat/blob/master/R/test-files.r
The students labs are simply an R script file. Say that they have an assignment
to calculate sqrt(2) and store it in variable a. In the same sessi
On 08/02/2015 8:22 AM, Måns Magnusson wrote:
> Hi!
>
> Im currently developing an R package to automatically give students
> feedback on programming assignments in R. I use the testthat package as an
> engine for the unit testing and do a wrapper to make the automatic marking
> easy for the studen
On Sat, Feb 7, 2015 at 10:52 PM, otoomet wrote:
[...]
> random numbers. For instance, can I be sure that
> set.seed(0); print(runif(1)); print(rnorm(1))
> will always print the same numbers, also in the future version of R?
I don't know if there is intention to keep this reproducible across R
On 7 February 2015 at 19:52, otoomet wrote:
| random numbers. For instance, can I be sure that
| set.seed(0); print(runif(1)); print(rnorm(1))
| will always print the same numbers, also in the future version of R? There
Yes, pretty much.
I've been lurking here over fifteen years, and while I
Hi!
Im currently developing an R package to automatically give students
feedback on programming assignments in R. I use the testthat package as an
engine for the unit testing and do a wrapper to make the automatic marking
easy for the students.
One function (called mark_my_file() ) will mark the
Today I struggled for hours to understand some unexpected package test
results. It turned out that this is because package "parallel", buried deep
in my dependencies, calls runif() during it's initialization and in this way
changes the random number sequence. This seems to be a part of a more
ge
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