
Hi,

Is there a way to define "+" so that "a"+"b" returns "ab" ?

> setMethod("+",c("character","character"),paste)
Error in setMethod("+", c("character", "character"), paste) : 
        the method for function '+' and signature e1="character",
e2="character" is sealed and cannot be re-defined
> "a"+"b"
Error in "a" + "b" : non-numeric argument to binary operator

Thanks!



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