#2452: [with patch, needs review] Heaviside step function, Dirac delta needed
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 Reporter:  gfurnish     |       Owner:  gfurnish
     Type:  enhancement  |      Status:  assigned
 Priority:  major        |   Milestone:  sage-4.1
Component:  symbolics    |    Keywords:          
 Reviewer:               |      Author:          
   Merged:               |  
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Comment(by gmhossain):

 Replying to [comment:12 burcin]:

 '''(1)'''
 > so if you move the contents of your `__call__` function to `_eval_` and
 > remove the last `SFunction.__call__` line things should work fine.

 Thanks Burcin! Thats what it needed. As you suggested, I have made those
 changes and
 explicit evaluation is now working.


 '''(2)'''
 > I would also like to see a `.sub()` test added,

 I am assuming you meant ".subs()". Several new tests are added as you
 suggested.


 '''(3)''' Doctstrings are updated suitably as `__call__` methods are now
 removed.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2452#comment:14>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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