list command

[Tim Wessman]

(05-01-2014 12:27 PM)Angus Wrote:  that the variable system and scope of commands is problematic. Very problematic for intuitive usage.

Unfortunately, this has nothing do with variables nor scope and everything to do with creating an unknown/unintentional object. The CAS has support for a "sequence", which is basically just a group of things separated by commas. However, they aren't lists, nor vectors and really purely just a list of separated items. They don't behave like lists nor vectors and frankly I've always been confused by them because they appear to have been tacked on very late to the xcas codebase it seems. Either I am just not understanding why or what they would be useful for, or they are half baked. I lean towards the first idea though.

They seem to be modeled after the sequence behavior in maple.

That being said, I do think we need to do something to better clarify when something is one of these sequence items and figure out a different way to display them. So I've filed that as and item to examine.