#6622: substitution of a dict into a symbolic expression modifies the dict
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Reporter: was | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.1.1
Component: calculus | Keywords:
Reviewer: | Author:
Merged: |
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Comment(by was):
Here's how to workaround it (namely, put "dict(constants)" instead of
"constants"). In the code for __call__ or subs, something similar should
be done.
{{{
sage: var('v t')
sage: f = v*t
sage: s = {v: 2}
sage: f(dict(s), t=3)
6
sage: s
{v: 2}
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6622#comment:1>
Sage <http://sagemath.org/>
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