From: Robert Klemme <bob.news@...>
Date: 2004-07-10T00:02:38+09:00
Subject: Re: weird behaviour


"ts" <decoux@moulon.inra.fr> schrieb im Newsbeitrag
news:200407091428.i69ESQl07744@moulon.inra.fr...
> >>>>> "l" == lopex  <lopexx@autograf.pl> writes:
>
> l> Is it because there is no +@ operator defined for the String class ?
>
>  no, this is this case
>
> svg% ruby -e '"".to_s +""'
> -e:1: undefined method `+@' for "":String (NoMethodError)
> svg%
>
> l> If so, why the latter is parsed silently ?
>
>  because with '"" + "".to_s +""' ruby has seen an identifier and it
don't
>  expect +"" at this step

Maybe Ruby tries to parse +"" as unary plus (i.e. number sign) and then
fails on the "" part.

    robert