similar to: S4 setClass / initialize misunderstanding

These lines of code setClass("A", representation(x="numeric")) setMethod(initialize, "A", function(.Object, ...) stop("oops")) setClass("B", representation("A")) result in > setClass("B", representation("A")) Error in initialize(value, ...) : oops in R version 2.9.0 alpha (2009-03-28 r48239) R version 2.10.0

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am painfully aware that this is most likely a problem with my system, but I am nevertheless going to ask if anyone has any ideas/suggestions for diagnosis and trouble-shooting. - From a clean checkout of release 66624 on Ubuntu 12.04 (32-bit, sorry!): gcc (Ubuntu/Linaro 4.6.4-1ubuntu1~12.04) 4.6.4 svn checkout https://svn.r-project.org/R/trunk/

Hi, This works fine. >setClass("a",representation(b="list",c="list")) >new("a",b=list(7)) >An object of class "a" Slot "b": [[1]] [1] 7 Slot "c": list() But, now suppose you want a slot to accept an object of class formula... >setClass("a",representation(b="list",c="formula"))

Hi - I tried to get some answer before but there seems to have no one response. My question is that I have a class like below definition: setClass("DBManager", representation(channel="RODBC")) My purpose of the conn slot is to hold a channel to database connection which is returned by a command like: channel <- odbcConnect("DB", uid="user",

Hi R People: I have a question about setClass please. I'm working thru "R Programming for Bioinformatics". Actually, I was wondering if there is such a thing as an updateClass, in order to change a "contains" option, please? that is, if I had setClass("dog", representation(name="character",paws="numeric",tail="character")) Fair

Hello ... With a new checkout of R-devel (last update was 2003-09-11) we are having a problem (it seems to be happening to all of us here on a few different machines) where during install/check/etc when the 'save image' happens (in packages using 'save image'): ** save image Error: couldn't find function "setClass" Execution halted This is for all packages that

I have a few questions and thoughts regarding class versioning and serialized S4 class instances. How is the version argument to setClass is intended to work? It appears to want an externalptr, but that seems odd to me. setClass("FOO", representation(x="numeric"), version="1.2.3") Error in validObject(.Object) : invalid class

the following returns an error in an 'exists' call on my machine MyEnv <- new.env() setClass("Numeric", "numeric", where=MyEnv) franklin parlamis > version _ platform powerpc-apple-darwin8.7.0 arch powerpc os darwin8.7.0 system powerpc, darwin8.7.0 status beta major 2 minor 4.0 year

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Dear UseRs, A simple class inheritance example: > setClass("test",representation(a="numeric")) > setMethod("initialize","test", function(.Object,x,...){ print("Initialization!!!") callNextMethod(.Object,a=x,...) }) > new("test",x=23) [1] "Initialization!!!" An

Hi,   I'm reading up on S4 classes *). There seem to be at least two ways of input validation: setClass() (using the 'validity' argument)  and setValidity(). Is it a matter of taste which function is used? Or should more complex validation code better be put in a setValiditity call? *) A (Not So) Short Introduction to S4 Object Oriented Programming in R V0.5.1 Christophe Genolini

Greetings, I am creating a standalone executable script using Rscript and have run into problems when I define a new S4 class. Here is a small script that demonstrates my problem: #!/usr/bin/env Rscript # # toy.Rscript -- testing S4 class creation in an Rscript setClass("toy", representation(name = "character", price = "numeric"),

Hi all, I have a self written likelihood as a model and functions to optimize and get fitted values, confidence intervals ect. I wonder if there is a way to define a 'class', or a 'model' (or a certain object)? so that I can use 'summary' to produce a summary like it does for a lm object. Also, it should be able to use 'predict' and 'plot' and other

Hello, Below is what I got running the examples from `setClass'. Could somebody please help explain why the last `setIs' call is returning the warning and whether this is expected? R> setClass("track", + representation(x="numeric", y="numeric")) [1] "track" R> setClass("trackCurve", +

I was installing the 'diffobj' package into TERR and got an error from the call StyleSummary <- setClass("StyleSummary", slots=c(container="ANY", body="ANY", map="ANY"), prototype=list( container=function(x) sprintf("\n%s\n", paste0(x, collapse="")), body=identity, detail=function(x) sprintf("\n%s\n",

Hi there, I seem to be misunderstanding routes a little bit as I can''t get the behavior I''m expecting from the following. My goal is to get "/forums/1" from the code <%= url_for :id => forum.id %> which is being called from a view associated with a controller named "Forums" and the "index" action. I have the following routes:

Either I''m not understanding how things are used, or this might be a bug in ActiveRecord. I''m using version 1.13.2. In my version of activerecord/lib/active_record/validations.rb (the svn trunk version is browsable at http://dev.rubyonrails.org/browser/trunk/activerecord/lib/active_record/validations.rb ), I have: def update_attribute_with_validation_skipping(name,

Can someone clear something up for me? [[[ # For apache to read user files, the ruleadd must give # it permissions by default. #### ${CMD} add subject uid 80 object not uid 80 mode rxws; ${CMD} add subject gid 80 object not gid 80 mode rxws; ]]] Doesn't the above mean that an apache user (eg, user-supplied CGI process, PHP script, etc) has the ability to read (and write!) anything in the

Hi, I''ve been experimenting with ip route for the last few days to get load sharing accross 2 providers working. While it works most of the time, on a few occasions, packets are routed to the wrong interface. I''m not sure to understand rules and routes traversal correctly (I couldn''t find answers in the howto). So, here are my questions: 1. How does the rule

Hi, I''ve been playing with Arel for a few days, but I feel really confused about predicates / arrays intersection. Let''s say I have 3 models: users, (bank) accounts and transfers. An account belongs to a user, and a transfer is made of a source and target accounts (see the snippets below). Given a user, I want to query his transfers. I can go this way in the User class: def