Can you recall why it was rejected, please? I really would like to know. 2020년 5월 27일 수요일 오전 4시 51분 16초 UTC+9, Aaron Meurer 님의 말: > > I think this was discussed in the past and we decided we don't want a > String object. Unfortunately GitHub's issue search is kind of bad so > I'm having a hard time finding the discussions. > > Aaron Meurer > > On Tue, May 26, 2020 at 2:34 AM mcpl snu <mcpl...@gmail.com <javascript:>> > wrote: > > > > Currently, many classes in SymPy include Symbol in args to provide the > names to their instances. An example for this is sympy.vector.CoordSys3D > class. > > > > Although this can be a clever way to do it, I think this is wierd - > perhaps it's an abuse of using Symbol. As far as I know, SymPy's Symbol is > a scalar whose operations, e.g. addition, integration, etc... are defined. > When we say "This 3D system's name is 'C'", we don't expect that this 'C' > can be substituted, divided, or subject to any other operation. Then why > use Symbol to denote it in the first place? > > > > Not only this design is unnecessary, it actually raises error. Please > refer to this issue page for example > > > > Although there can be many ways to circumvent this issue, I think the > most simple way is to introduce String class, which wraps str and is a > subclass of Atom. > > > > If there is any reason to use Symbol for this purpose that I overlooked, > please leave a comment here. Thank you. > > > > -- > > You received this message because you are subscribed to the Google > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sy...@googlegroups.com <javascript:>. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/1ce4ea17-af3e-4fc4-9870-013b4444f57a%40googlegroups.com. > > >
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