#9556: Dynamic attributes for symbolic expressions
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   Reporter:  SimonKing             |       Owner:                              
         
       Type:  enhancement           |      Status:  needs_work                  
         
   Priority:  major                 |   Milestone:  sage-5.0                    
         
  Component:  symbolics             |    Keywords:  symbolic expression dynamic 
attribute
     Author:                        |    Upstream:  N/A                         
         
   Reviewer:                        |      Merged:                              
         
Work_issues:  segfaulting doctests  |  
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Comment(by SimonKing):

 Replying to [comment:4 mhansen]:
 > I did a little mockup using this idea.
 >
 > sage: f = ex_func(x, x+1, x+2)
 > sage: f.some_function_name()
 > 3
 > sage: abs(f)
 > abs(ex_func(x, x + 1, x + 2))

 ... which seems like the correct answer to me. So, the fact that
 {{{ex_func}}} has an {{{_abs_}}} method helps to get the right answer for
 {{{f}}}.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9556#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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