[Rd] S4 : declaration of inheritance

[christophe.genolini at free.fr]

Hi the list,

There is two way to declare a new object with inheritence : one can do

setMethod("myClass",
  representation("fatherClass",x="numeric")
  ....

or

setMethod("myClass",
  representation(x="numeric"),
  containt="fatherClass"
  ....

Is there any difference ? What is the usal way ?

Christophe