let guard be implemented using the assignment

src/HybridSystems.jl

@@ -93,24 +93,24 @@ Returns the set of allowed states of the system at mode `u`.
 """
 MathematicalSystems.stateset(hs::HybridSystem, u::Int) = stateset(hs.modes[u])
 
+"""
+    assignment(hs::HybridSystem, t)
+
+Returns the assignment for the transition `t`.
+"""
+assignment(hs::HybridSystem, t) = hs.resetmaps[symbol(hs, t)]
+
 """
     guard(hs::HybridSystem, t)
 
 Returns the guard for the transition `t`.
 """
-guard(hs::HybridSystem, t) = stateset(hs.resetmaps[symbol(hs, t)])
+guard(hs::HybridSystem, t) = stateset(assignment(hs, t))
 
 # for completeness, extend the stateset function from MathematicalSystems
 # because guards are given as the state constraints of the reset map
 MathematicalSystems.stateset(hs::HybridSystem, t) = guard(hs, t)
 
-"""
-    assignment(hs::HybridSystem, t)
-
-Returns the assignment for the transition `t`.
-"""
-assignment(hs::HybridSystem, t) = hs.resetmaps[symbol(hs, t)]
-
 """
     inputdim(s::AbstractSystem, u::Int)