Alright.
Maybe the symbol I chose was not appropriate. I tried ':' to be able to do 'a:name' with 'a' a S4 object.
I get the following error:
Error in genericForPrimitive(f) :
methods may not be defined for primitive function ":" in this version of R

Does there exist any symbol that would be suitable for the job?
Thanks

--
Renaud Gaujoux
Computational Biology - University of Cape Town
South Africa


On 09/07/2010 14:29, Duncan Murdoch wrote:
On 09/07/2010 8:18 AM, Renaud Gaujoux wrote:
Hi,

is there a way to define a method say '$$' that would behave like '$' and allow calls like 'a$$name'?
No, the parser handles a fixed syntax, and that expression is not legal. You could do it with

a %$$% name

using the infix operator syntax. (I think the description in the R Language Definition suggests this is not legal, since $$ is not a valid name, but it does currently work and that's unlikely to change.)

Duncan Murdoch



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