Merge pull request #1451 from SciML/myb/param

Default allow_symbolic to true

Author: YingboMa

src/structural_transformation/codegen.jl

@@ -453,10 +453,10 @@ function build_observed_function(
         [],
         pre(Let(
             [
+             assignments[is_not_prepended_assignment]
              collect(Iterators.flatten(solves))
              map(eq -> eq.lhs←eq.rhs, obs[1:maxidx])
              subs
-             assignments[is_not_prepended_assignment]
             ],
             isscalar ? ts[1] : MakeArray(ts, output_type),
             false

src/structural_transformation/utils.jl

@@ -158,7 +158,7 @@ end
 ### Structural and symbolic utilities
 ###
 
-function find_eq_solvables!(state::TearingState, ieq; may_be_zero=false, allow_symbolic=false)
+function find_eq_solvables!(state::TearingState, ieq; may_be_zero=false, allow_symbolic=true)
     fullvars = state.fullvars
     @unpack graph, solvable_graph = state.structure
     eq = equations(state)[ieq]
@@ -191,7 +191,7 @@ function find_eq_solvables!(state::TearingState, ieq; may_be_zero=false, allow_s
     end
 end
 
-function find_solvables!(state::TearingState; allow_symbolic=false)
+function find_solvables!(state::TearingState; allow_symbolic=true)
     @assert state.structure.solvable_graph === nothing
     eqs = equations(state)
     graph = state.structure.graph