remove show

Author: vyudu

src/systems/callbacks.jl

@@ -116,7 +116,7 @@ Base.show(io::IO, x::Pre) = print(io, "Pre")
 input_timedomain(::Pre, _ = nothing) = ContinuousClock()
 output_timedomain(::Pre, _ = nothing) = ContinuousClock()
 unPre(x::Num) = unPre(unwrap(x))
-unPre(x::BasicSymbolic) = operation(x) isa Pre ? only(arguments(x)) : x
+unPre(x::BasicSymbolic) = (iscall(x) && operation(x) isa Pre) ? only(arguments(x)) : x
 
 function (p::Pre)(x)
     iw = Symbolics.iswrapped(x)

src/systems/index_cache.jl

@@ -127,7 +127,6 @@ function IndexCache(sys::AbstractSystem)
         end
 
         for sym in discs
-            @show sym
             is_parameter(sys, sym) ||
                 error("Expected discrete variable $sym in callback to be a parameter")