R help - Nov 2012 - Dabbling with R5 setRefClass - Inheritance problems

Hello,

I wrote a class 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(
>    test="character"),
>  contains="rcfpdsuperclass")
Executing the latter I get:
> Error in getClass(what, where = where) : 
>  "rcfpdsuperclass" is not a defined class
Does someone have an idea what I am doing wrong?

Thank you for your consideration.

Sincerely, Joh

Hi Johannes,

Just a typo.

You've written 

...
 contains="rcfpdsuperclass")

When, in fact, you've defined the object rcfdpsuperclass

To highlight the mistake, I'll use capital letters: rcfPD... and rcfDP...

Regards,

Jos?



Jos? Iparraguirre
Chief Economist
Age UK

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-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Johannes Graumann
Sent: 08 November 2012 10:03
To: r-help at stat.math.ethz.ch
Subject: [R] Dabbling with R5 setRefClass - Inheritance problems

Hello,

I wrote a class 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(
>    test="character"),
>  contains="rcfpdsuperclass")
Executing the latter I get:
> Error in getClass(what, where = where) : 
>  "rcfpdsuperclass" is not a defined class
Does someone have an idea what I am doing wrong?

Thank you for your consideration.

Sincerely, Joh

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