[Grace-core] collections interface for new classes

[James Noble]

On 11/12/2015, at 11:16am, Michael Homer <michael.homer at ecs.vuw.ac.nz> wrote:

> You (both) already identified the issue

>>>  think the issue is distinguishing between [ ] as an operator, ... and as a sequence denotation

OK so what are the options here? 

- requiring []s as sequences to be in parenthesis 
- requiring no spaces before [] as indexing  (which would also work well with <> as generics) 

any others?

J