#9638: Interact sliders should be able to have negative step size
------------------------+---------------------------------------------------
Reporter: kcrisman | Owner: itolkov, jason
Type: defect | Status: new
Priority: minor | Milestone:
Component: interact | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Stepping backwards on sliders. Currently,
{{{
@interact
def _(n=slider(100,0,-1,1)):
print n
}}}
gives the error
{{{
ValueError, "invalid negative step size -- step size must be
positive"
}}}
as far as I know. Allowing this could be very helpful, but maybe
there was a reason not to do this I am unaware of - the explicit
ValueError leads me to think so, since whoever wrote it put knew this
could happen!
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9638>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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