Differentiate `<-` and `<<-`

[halpo]

Parser does not differentiate between the double <<- from the single <-.

[dmurdoch]

Syntactically, those are the same, so I don't think the parser should distinguish them. It would be like distinguishing
mean from sd. There are semantic differences, not syntactic ones.

[halpo]

you don't think that since they are different operators they should have different classes in the parse data? Seeing that parser differentiates = and <- it makes sense to me that <<- would also be differentiated.

[dmurdoch]

On 12-07-09 7:09 PM, Andrew Redd wrote:

you don't think that since they are different operators they should have different classes in the parse data? Seeing that parser differentiates = and <- it makes sense to me that <<- would also be differentiated.

= has a higher priority than <-, but <<- has the same priority. = is
also used to bind values to arguments, but <- is never used for that.

It probably makes sense for a syntax highlighter to display them
differently, but it should do that based on the text value, not the
token value.

Duncan