[Jprogramming] Request for enhancement to #

[Tracy Harms]

I, too, find this an attractive extension to Copy.

On Sat, Mar 13, 2010 at 5:18 PM, Dan Bron <j at bron.us> wrote:

> In the recent Hofstadter-Conway thread, I used complex&# to expand a
> vector.
> However, the solution was slightly complicated (and slowed) by the fact
> that
> # only allows me to specify fills *after* an element.
>
> It would be nice if # were extended such that if the imaginary component of
> a complex argument were negative, then the fills would *precede* the
> corresponding element in the output.  That is, (m j. n)&# works as it does
> today if n is positive or zero, but if n is negative then the fills come
> before, not after.
>
> I've needed this before; see, e.g. the bottom of:
>
>  http://www.jsoftware.com/pipermail/programming/2007-January/004750.html
>
> -Dan
>
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