1 files changed, 9 insertions, 10 deletions
diff --git a/impl/VariableAssignment.hpp b/impl/VariableAssignment.hpp
index cfce925..3f4ff70 100644
--- a/impl/VariableAssignment.hpp
+++ b/impl/VariableAssignment.hpp
@@ -22,8 +22,7 @@ template<typename Domain>
 struct DynamicVariableAssignment : public VariableAssignment<Domain> {
   DynamicVariableAssignment(
     const EquationSystem<Domain>& system,
-    DynamicMaxStrategy<Domain>& strat,
-    const Domain& value=infinity<Domain>()
+    DynamicMaxStrategy<Domain>& strat
   ) : _system(system),
       _strategy(strat),
       _values(system.variableCount(), unknown(infinity<Domain>())),
@@ -46,7 +45,8 @@ struct DynamicVariableAssignment : public VariableAssignment<Domain> {
   }
 
   const Domain& operator[](const Variable<Domain>& var) const {
-    return _values[var];
+    // slightly hacky
+    return const_cast<DynamicVariableAssignment<Domain>&>(*this)[var];
   }
 
   const Domain& operator[](const Variable<Domain>& var) {
@@ -60,7 +60,7 @@ struct DynamicVariableAssignment : public VariableAssignment<Domain> {
     if (_stable.contains(x)) {
       _stable.remove(x);
       _values[x] = unknown(infinity<Domain>());
-      
+
       solve(x);
       /*
       IdSet<Variable<Domain> > infl = _influence[x];
@@ -128,12 +128,11 @@ private:
   };
 
   const EquationSystem<Domain>& _system;
-  const DynamicMaxStrategy<Domain>& _strategy;
-  mutable IdMap<Variable<Domain>, Domain> _values;
-public:
-  mutable IdSet<Variable<Domain> > _stable;
-private:
-  mutable IdMap<Variable<Domain>,IdSet<Variable<Domain> > > _influence;
+  DynamicMaxStrategy<Domain>& _strategy;
+  IdMap<Variable<Domain>, Domain> _values;
+  IdSet<Variable<Domain> > _stable;
+  IdMap<Variable<Domain>,IdSet<Variable<Domain> > > _influence;
+  bool _frozen;
 };
 
 #endif