Proposal: add vector arithmetic to array module

[Markus Schaber]

Hi,

Paul Rubin <phr-n2001 at nightsong.com> schrub:

> It seems almost unnatural that given two arrays of the same type
> of element and the same length, I can't say "a = b + c" and get
> the arrays added together element-wise.  

For me, it seems "natural" that the above assigns a to the 
concatenation of b and c, just as it happens to strings.

markus
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