similar to: single quotes in strings, example block

I suppose it would work, although "=>" is rather a descriptive symbol and less a function. But choosing between quoting: "A + B => C" and a regular function: A + B %=>% C probably quoting is the most straightforward, as the result of the foo() function has to be a string anyways (which is parsed by other functions). On Tue, Apr 12, 2016 at 6:20 PM, Richard M.

%=>% would have precendence ('order of operations') problems also. A + B %=>% C is equivalent to A + ( B %=>% C) and I don't think that is what you want. as.list(quote(A + B %=>% C)) shows the first branch in the parse tree. The following function, str.language, shows the entire parse tree, as in > str.language(quote(A + B %=>% C)) `quote(A + B %=>%

You are right. >= is not as evocative as =>. Perhaps > and < would do? %=>% and %<=% would work. Bill Dunlap TIBCO Software wdunlap tibco.com On Wed, Apr 15, 2020 at 12:41 AM Adrian Du?a <dusa.adrian at gmail.com> wrote: > Dear Bill, > > I already tried this, and it would have been great as (currently) the > sufficiency relation is precisely

Would making it regular function %=>%, using "%" instead of quotes, work for you? On Tue, Apr 12, 2016 at 11:09 AM, Adrian Du?a <dusa.adrian at unibuc.ro> wrote: > On Tue, Apr 12, 2016 at 2:08 PM, Duncan Murdoch <murdoch.duncan at gmail.com> > wrote: >> [...] >> >> It never gets to evaluating it. It is not a legal R statement, so the > parser

On Tue, Apr 12, 2016 at 2:08 PM, Duncan Murdoch <murdoch.duncan at gmail.com> wrote: > [...] > > It never gets to evaluating it. It is not a legal R statement, so the parser signals an error. > If you want to pass arbitrary strings to a function, you need to put them in quotes. I see. I thought it was parsed inside the function, but if it's parsed before then quoting is the

Dear Bill, I already tried this, and it would have been great as (currently) the sufficiency relation is precisely "=>"... but: foo <- function(x) return(substitute(x)) foo(A => B) Error: unexpected '>' in "foo(A =>" It seems that "=>" is a syntactic error for the R parser, while "<=" is not because it denotes less than or

Hi, Field RdMacros was introduced in file DESCRIPTION to allow users to import LaTeX-like macros from other packages. Currently 'R CMD Check --as-cran' gives a NOTE: > Unknown, possibly mis-spelled, field in DESCRIPTION: > ?RdMacros? A small package demonstrating this is available at http://www.maths.manchester.ac.uk/~gb/testRdMacro_0.0.2.tar.gz (and this is the source:

In the help page for ?is.integer, there is this function is.wholenumber <- function(x, tol = .Machine$double.eps^0.5) abs(x - round(x)) < tol A quick question: is there a case where this alternative function will not work? function(x) x %% 1 == 0 Best, Adrian -- Adrian Dusa University of Bucharest Romanian Social Data Archive Soseaua Panduri nr.90 050663 Bucharest sector 5

Dear R-devs, Below is a small example of what I am trying to achieve, that is trivial in R and I would like to learn how to do in C, for very large matrices: > (mymat <- matrix(c(1,0,0,2,2,1), nrow = 2)) [,1] [,2] [,3] [1,] 1 0 2 [2,] 0 2 1 And I would like to produce: [1] "a*C" "B*c" Which can be trivially done in R via something like: foo

Thank you for your replies, this actually has little to do with the regular R code but more to signal what in my package QCA is referred to as a necessity relation A <- B (A is necessary for B) and sufficiency A -> B (A is sufficient for B). If switched by the parser, A -> B becomes B <- A which makes B necessary for A, while the intention is to signal sufficiency for B. Capturing in

Yes, that does have to do with floating point representation. I use this function for these types of comparisons (works with values as well as with vectors): check.equal <- function(x, y) { check.vector <- as.logical(unlist(lapply(x, all.equal, y))) check.vector[is.na(check.vector)] <- FALSE return(check.vector) } See: ?all.equal Hth, Adrian On Tue, Apr 5, 2016 at 2:34 PM,

On Tue, Oct 6, 2015 at 2:52 PM, Adrian Du?a <dusa.adrian at unibuc.ro> wrote: > Dear Gabriel, > > On Wed, Oct 7, 2015 at 12:39 AM, Gabriel Becker <gmbecker at ucdavis.edu> > wrote: > >> [...] >> >>> >>> I apologize for pushing this topic to the limit, but I haven't got an >>> answer to this question yet... >>> >>

Dear All, I understand the R CMD checks with only the base package attached, everything else (including the other packages bundled with the base R) should be imported and most importantly declared in the Imports field from the DESCRIPTION file. However, I do use functions from other packages than base (utils, grDevices, stats, graphics), for which it is sufficient to declare importFrom() in the

To do this in C, it would probably be easier and faster to just do the string manipulation directly. Luckily, there are already packages that have done this for you. See an example below using the S4Vectors package. foo2 <- function(mymat, colnms, tilde=FALSE) { chars <- colnms[col(mymat)] lowerChars <- if (tilde) paste0("~", chars) else tolower(chars) chars <-

Using => and <= instead of -> and <- would make things easier, although the precedence would be different. Bill Dunlap TIBCO Software wdunlap tibco.com On Mon, Apr 13, 2020 at 1:43 AM Adrian Du?a <dusa.adrian at gmail.com> wrote: > Thank you for your replies, this actually has little to do with the > regular R code but more to signal what in my package QCA is referred

Adrian, Responses inline On Tue, Oct 6, 2015 at 1:58 PM, Adrian Du?a <dusa.adrian at unibuc.ro> wrote: > Hi Gabriel, > > On Tue, Oct 6, 2015 at 10:59 PM, Gabriel Becker <gmbecker at ucdavis.edu> > wrote: > >> [...] >> >> At the very least, this is seems to be a flagrant violation of the >> *spirit* of the CRAN policy, which AFAIK is intended to

I have a simple function such as: foo <- function(x) { call <- lapply(match.call(), deparse) testit <- capture.output(tryCatch(eval(x), error = function(e) e)) if (grepl("Error", testit)) { return(call$x) } } and I would like to detect a formula when x is not an object: # this works > foo(A + B) [1] "A + B" # but this doesn't >

Adrian, I am not on the CRAN or R-core teams, so the following is my own view, but... > library(QCA) > > Users are encouraged to cite this package as: > > Dusa, Adrian (2015). QCA: Qualitative Comparative Analysis. R Package > Version 1.2-0, > URL: http://cran.r-project.org/package=QCA > > This is just an encouragement, not a requirement, and the official citation

I searched and tried for hours, to no avail although it looks simple. (function(x) substitute(x))(A <- B) #A <- B (function(x) substitute(x))(A -> B) # B <- A In the first example, A occurs on the LHS, but in the second example A is somehow evaluated as if it occured on the RHS, despite my understanding that substitute() returns the unevaluated parse tree. Is there any way, or is

>>>>> Adrian Du?a <dusa.adrian at unibuc.ro> >>>>> on Fri, 9 Mar 2018 10:34:30 +0200 writes: > Dear All, > I understand the R CMD checks with only the base package attached, > everything else (including the other packages bundled with the base R) > should be imported and most importantly declared in the Imports field from