Converting equations (and Symbolics) to strings

[TorkelE]

I am preparing functionality for saving Catalyst ReactionSystem models to file. Basically, I would just create a .jl file which recreates the reaction network model from scratch (and can be loaded through e.g. include.

This will require converting symbolic expressions to Strings so that they can be written to files. Is there any functionality for this, or do we need to create this?

[ChrisRackauckas]

I think this should probably live in SymbolicIndexingInterface since that's where getname/hasname originates. stringname or something.

[TorkelE]

Still, some simple conversions are possible just using Symbolics, e.g.

@syms x y z
@variables t X(t) Y(t)

String(Symbol(x)) # "x"
String(Symbol(t)) # "t"
String(Symbol(X)) # "X(t)"

so something like this could exist in Symbolics. Not sure whether there is some additional stuff one would need which requires knowledge of a system though, but think it should be fine.