[Cython] Cython array type: Summary

[Robert Bradshaw]

I'm partially responsible, but this thread keeps digressing into  
implementation details. As a high level view, what do people think about

1) Some kind of SIMD array type being added to the language.

2) The given proposal, which is essentially a type with syntax like  
int[:,:] that would behave just like a the widely-used numpy array,  
including slicing and (eventually) broadcasting, but the underlying  
memory may be held by something other than an numpy object (e.g. it  
could be any other buffer supporting object, or a raw pointer) and  
not all numpy operations would be supported right away (or ever).

While we're on that note, what about

3) Some kind of type for memory-managed lists of C types (where + is  
concatenation, append is supported, memory managed, and nice  
conversion to/from python lists).


I am in favor of all three, and obviously Dag is pushing for (1) and  
(2).

- Robert