#14270: Remove function call syntax for symbolic expressions
-----------------------------------------+----------------------------------
Reporter: ppurka | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.9
Component: symbolics | Resolution:
Keywords: | Work issues: fix
combinat/tutorial.py
Report Upstream: N/A | Reviewers:
Authors: Punarbasu Purkayastha | Merged in:
Dependencies: | Stopgaps:
-----------------------------------------+----------------------------------
Comment (by kcrisman):
I'd also say that I think the prep tutorial one should still talk about
this at some length, to explain (in the event this is done) ''why'' this
doesn't work, because a lot of people will now and forevermore expect that
it will work. Similarly, most of these examples presumably should be
moved to the new syntax, perhaps even with an explanatory remark as to
exactly why that is the syntax. For instance, how ''would'' one do the
matrix example `h(x)` now? We should be careful not to remove anything,
just to change how it works to the appropriate way post-this-ticket.
Rant I don't actually want to rehash any more, but put here for
completeness:
<rant>
Because distinguishing between a function and a symbolic expression is
an unnatural, CS-y thing to do; any symbolic expression is obviously a
function of all variables in it, mathematically; for any function with
more than one `var` I agree we don't want this (as indeed the example in
the prep document points out) but for one-variable expressions (pace
Jason, who will immediately ask whether `x+y-y` is one variable) it seems
worth the potential for confusion...
</rant>
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14270#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
