#17958: implement declare_var, deprecate (None)var
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Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by mmezzarobba):
Does sage really need a version of `var()` that touches the global
namespace? Other similar functions like `polygen()` and `*.gen()` don't do
it, except for a handful of constructors after `inject_on()`—which I doubt
anyone uses. And `y = var('y')` is clearer and shorter than
`declare_var('y')`, though it would be nice if `y = var()` (or perhaps
`<y> = var()`?) was preparsed to `y = SR.var('y')`.
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Ticket URL: <http://trac.sagemath.org/ticket/17958#comment:3>
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