Merge pull request #2698 from SciML/myb/fix4

Fix method redefinition

Author: YingboMa

src/discretedomain.jl

@@ -1,10 +1,9 @@
 using Symbolics: Operator, Num, Term, value, recursive_hasoperator
 
-struct SampleTime <: Operator end
-SymbolicUtils.promote_symtype(::Type{SampleTime}, t...) = Real
-function SampleTime()
-    SymbolicUtils.term(SampleTime, type = Real)
+struct SampleTime <: Operator
+    SampleTime() = SymbolicUtils.term(SampleTime, type = Real)
 end
+SymbolicUtils.promote_symtype(::Type{<:SampleTime}, t...) = Real
 
 # Shift
 

src/systems/clock_inference.jl

@@ -63,7 +63,7 @@ function substitute_sample_time(ex, dt)
             end
             new_args[i] = ex_arg
         end
-        similarterm(ex, op, new_args; metadata = metadata(ex))
+        similarterm(ex, op, new_args, symtype(ex); metadata = metadata(ex))
     end
 end