search for: initfields

Dear all, I've just had a package update bounced from CRAN because of a recent change in R-devel which seems to affect the behaviour of the initFields() reference class method. (The change must be very recent because I tested the package on a week-old build of R-devel.) It seems that the method no longer coerces its arguments to the expected type of each field. For a simple example: > Foo <- setRefClass("Foo", fields=list(number=...

As suggested by the following code: A <- setRefClass("A", fields = list(x = "logical"), methods = list(initialize = function(...) { x <<- FALSE initFields(...) })) A$new() # Works as expected quote <- as.character A$new() # Error in function (value) : # invalid replacement for field ?x?, should be from class ?logical? or a subclass (was class ?character?) I get the same error in: * R version 2.15.2 (2012-10-26) * R version 2.15.3 (2013-03-01)...

Is it possible to override the $new(...) in the reference class generator? I have tried adding a "new" method to the methods of the class, but that is obviously not correct. I have also tried adding it to the class generator, but the class generator still uses the default constructor. As a simple example, this is the current interface: TestClass <- setRefClass

...a decent graphical system). This plugin requires R 14.0 (14.2 or 15 does not work). When I install R it gives an warning: > library(ggplot2) Warning message: package ‘ggplot2’ was built under R version 2.14.2 After that, when i use gplot2: > ggplot()+geom_bar(aes(x=factor(1),y=10)) Error in initFields(scales = scales) : could not find function "initRefFields" I found on internet that the solution for this problem is upgrading to a newer version of R (and indeed, on 2.15 or 3.0 ggplot2 works fine). spss needs 2.14.0, however. Does anyone know a solution? Thanks Frans [[alternative...

...hat "inherit" from that class. If I follow the usual inheritance paradigm I would have to actually define those new "subclasses" and let them inherit from the superclass (contains argument(, right? But can I get around that by sort of registering new fields? Maybe with ''initFields(.)''? Thanks for any info on that, Janko ##### SYSTEM INFO ##### Windows XP SP3 R 2.12.0 Eclipse 3.6.1 (Helios) StatET 0.9.1 ##################### [[alternative HTML version deleted]]

...it would be better to have a value specifically designed for this purpose. > nilObject <- Foo$new() > is.nilObject <- function (x) identical(x,nilObject) > Bar <- setRefClass("Bar", fields=list(foo="Foo"), methods=list( + initialize=function (foo=nilObject) { initFields(foo=foo) })) > is.nilObject(Bar$new()$foo) [1] TRUE Is there already something like this that I'm not aware of? If not, would it be possible and generally desirable to create it? All the best, Jon -- Jonathan D Clayden, PhD Lecturer in Neuroimaging and Biophysics Imaging and Biophysics U...

...like so: > rcfdpsuperclass <- setRefClass( > Class="rcfdpsuperclass", > fields = list( > RcfpdVersion = "character"), > methods = list( > initialize = function(){ > 'Populates fields with defaults and lock as appropriate' > initFields( > RcfpdVersion = as.character(packageVersion("RCFPD"))) > lockBinding(sym="RcfpdVersion",env=.self) > })) And a second one like this: > sequencesuperclass <- setRefClass( > Class="sequencesuperclass", > fields = list( >...

> setRefClass("Foo", fields = list()) Error in setRefClass("Foo", fields = list()) : A list argument for fields must have nonempty names for all the fields In my opinion, the above should not fail. There are no fields. Thanks, Michael [[alternative HTML version deleted]]

Hi, New to this list, and glad I found R5 which si a great improvement to R for my work. Something seems odd anyway, when I do a setRefClass, the initialize method execute at the class definition. I would like it to execute only when an instance is created. How can I do that? I found no way to test if the code execution is when the class definition happens or when a $new instance is created.

Hi there, I''d like to choose between an "static" and "dynamic" access of a reference class field, say ''a''. myObj <- getRefClass("Blabla")$new() Static: myObj$a Dynamic: myObj$a.get() where the function retrieves the data from a database (or some other location), stores it to a buffer and

Dears, I have a question about copying reference objects using the initialize method. 1) If the latter has no arguments, there is no problem to copy an object. myClass = setRefClass("myClass", fields = list(value = "numeric") ) myClass$methods(initialize = function(...){ ? value <<- 1 ? callSuper(...) }) newObject = myClass$new() newObject$value = 2 copyObject =

Hi everyone, I am getting a segmentation fault (seems to occur randomly) using Asterisk 13.7.0-rc2 with PJProject 2.4.5. It appears to be something that libmysqlclient is complaining about when doing a query in ps_endpoint_id_ips. We are using Asterisk Realtime. This also seems to occur in Asterisk 13.5.0. Below is a backtrace that might help a little. I have looked through the change log for