#11576: make it possible to generate sequences of variables easily
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Reporter: kcrisman | Owner: burcin
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.6
Component: symbolics | Resolution:
Keywords: Cernay2012 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by mjo):
Replying to [comment:21 kcrisman]:
> > ''eventually'' using Ginac's capabilities. I would view doing this
natively as a temporary measure. For instance, have you checked how this
performs with respect to Nils' comment about memory usage?
> >
> > Hopefully we could just deprecate `SR.Symbols()`
> ? isn't this the new thing you just added? (well, `symbols`, but I don't
see `Symbols` or `Symbol` - or did you mean `symbol`?)
[[BR]]
Typo, I meant lowercase `SR.symbols()`. Yeah, it's the thing I just added.
But if there's ever a simpler solution with the same functionality, we
could deprecate it. If I can just call `x[1, 2:3]` directly, then there's
no need to do `x = SR.symbols(); x[1, 2:3]`.
[[BR]]
> > and tell people to use the indexed symbols instead. Which memory
usage comment do you mean?
> comment:4
[[BR]]
Oh, right. As Burcin pointed out, there's no leak, it's just creating
symbols and they use up some memory. If you stick to the same symbols,
memory usage won't grow.
I can see the value in being able to use arbitrary subscripts, but I also
like being able to do the common case quickly and easily. `x.ind[1]` is a
little weird, especially if we can't use multiple indices. I also don't
think it makes much sense to subscript `SR(1).ind[5]` and have it display
`1.5`.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11576#comment:24>
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