#12446: Introduce user_globals
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Reporter: schilly | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: user interface | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by {'newvalue': u'Jeroen Demeyer', 'oldvalue': ''}):
* author: => Jeroen Demeyer
* component: cython => user interface
* priority: minor => major
* milestone: sage-6.4 => sage-6.6
* owner: jdemeyer => was
Old description:
> This is a quote from `cython_lambda`'s documentation:
>
> {{{
> sage: a = 25
> sage: f = cython_lambda('double x', 'sage.math.sin(x) + sage.a')
> sage: f(10) # known bug
> 24.455978889110629
> sage: a = 50
> sage: f(10) # known bug
> 49.455978889110632
> }}}
>
> Executing this gives
> {{{
> sage: a = 25
> sage: f = cython_lambda('double x', 'sage.math.sin(x) + sage.a')
> sage: f(10)
> Traceback (most recent call last):
> ...
> KeyError: 'math'
> }}}
New description:
We introduce a new feature: user globals. The idea is to store somewhere a
dictionary with the user-space globals which can then be used to inject
global variables.
This ticket implements the framework for this and fixes this bug in
`cython_lambda` as proof-of-concept:
{{{
sage: a = 25
sage: f = cython_lambda('double x', 'sage.math.sin(x) + sage.a')
sage: f(10) # known bug
24.455978889110629
sage: a = 50
sage: f(10) # known bug
49.455978889110632
}}}
Executing this gives
{{{
sage: a = 25
sage: f = cython_lambda('double x', 'sage.math.sin(x) + sage.a')
sage: f(10)
Traceback (most recent call last):
...
KeyError: 'math'
}}}
--
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Ticket URL: <http://trac.sagemath.org/ticket/12446#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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