On Jan 5, 2006, at 3:54 PM, Steve L. wrote: >> self-modifying Object, and not an ordinary string at all. > > I don't think it would hurt to think of it as an immutable string > (not a > String), in your own personal life. However, that probably would > not go over > well on a mailing list :-) This is pretty far off topic but might be of some interest to some of you (or none of you). I don't think of my personal name as the immutable string composed of the roman letters G a r y. My name is Gary and it has the properties of a name not the properties of a sequence of Roman letters. In fact there are a variety of character sequences that can be interpreted as my name: G a r y G A r y g A R Y g a r y and if you want to switch to a different font or UTF-8 or whatever, then the list is endless. You can also convert my name to sound waves and it works as a name also. There are other people who share my name. Most of them I've never met and never will meet but we have this abstract thing, a name, in common. Someone, somewhere probably has a dog named Gary. But that doesn't mean he is named after me or I'm named after him. We just share the name. Maybe some Ruby programmer has created a class named Gary without asking me if it was OK, or maybe it was a Java programmer. In fact, names don't even have to be associated with anything in particular they can exist independent of any referent. For example, I don't think anything has ever been given the name AdafkeqkndkXXXgkos, but that particular name just got created at the moment I referenced it and it happens to have an analogous string of Roman letters. Maybe it is pronounceable (probably in Klingon). If you looked at the binary values of those letters encoded in ASCII and considered them as just one big binary value then you could say there is a particular integer value that is analogous to that name also. The integer 1197568633 is analogous to my name as is 47617279 and 13m2sjp or alternatively 1197568633, 47617279, and 13m2sjp are all names for one particular mathematical integer. You could say that integer has the name Gary. I think in a very deep, conceptual way, Ruby symbols behave like names just as Ruby fixnums behave like integers. But maybe I'm just weird. :Gary :Wright
on 2006-01-06 00:48
on 2006-01-06 02:10
On Thu, 05 Jan 2006 22:48:07 -0000, <firstname.lastname@example.org> wrote: > > I think in a very deep, conceptual way, Ruby symbols behave like names > just as Ruby fixnums behave like integers. > That's exactly the kind of feeling I was going with when I made that naive 'Symbols are names' comment way back when. You put it into words better than I ever could :) Cheers,
on 2006-01-06 17:24
"Ross B." <email@example.com> writes: > > Cheers, > > -- > Ross B. - firstname.lastname@example.org It's not naive and it's closer to the truth then other descriptions so far. However, it seems for some people the concept of being able to represent names directly seems scary and foreign. Probably due to the numerous years of working with languages that have imporverished language constructs. It is the same concept of being able to represent integers directly, but since most languages allow direct integer representations, it is not perceived as scary and foreign. Why would they care about how Symbol is implemented is beyond me, as if knowing how Fixnum is implemented would enhance their understanding of what an integer is and how to appropriately use it. YS.