Nothing has been set in stone, but one proposed syntax is

```Julia
l = collect((i, j) for j in range(i+1, 5) for i in range(1, 5))
```

i.e. using parentheses instead of brackets, exchanging the order of
`i` and `j`, and using an explicit call to `collect` to convert the
generator into an array. Without that call, you get a generator that
is more efficient since it doesn't have to allocate memory -- compare
`range` and `xrange` in Python 2. In most circumstances, you would be
able to use the generator directly instead of having to convert it to
an array, and then you don't need the call to `collect.

-erik



On Sun, Apr 3, 2016 at 1:25 PM, Jonatan Pallesen <[email protected]> wrote:
> Performance is not the main factor. More importantly I don't think the vcat
> solution looks very neat. I'm curious about what the proposed generator
> syntax is.



-- 
Erik Schnetter <[email protected]>
http://www.perimeterinstitute.ca/personal/eschnetter/

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