[Grace-core] Collections suggestion

[Kim Bruce]

While I can see some justification for making them different, I think it is much simpler for students if they are the same. 

Sent from my iPad

> On Jul 30, 2014, at 9:49 AM, James Noble <kjx at ecs.vuw.ac.nz> wrote:
> 
>> On 30/07/2014, at 19:40 pm, Marco Servetto <marco.servetto at gmail.com> wrote:
>> 
>> And I do not. What is the issue here?
> 
> they should both do the same thing. 
> who could remember the difference, let alone explain it?
> 
> J
> 
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