added default name and made matrix graph pointer

mlmc/src/montecarlo/Sample.hpp

@@ -27,6 +27,8 @@ struct SampleID {
 };
 
 struct SampleSolution {
+    std::string name = "U";
+
     SampleID id;
 
     double Q;
@@ -35,14 +37,14 @@ struct SampleSolution {
 
     Vector U;
 
-    SampleSolution(MatrixGraphs &solMGraphs, int mGlevel) :
-        U(Vector(solMGraphs[mGlevel])) {
+    SampleSolution(MatrixGraphs *solMGraphs, int mGlevel) :
+        U(Vector((*solMGraphs)[mGlevel])) {
         Init();
     }
 
     // Todo might crash if sampleID corresponds to coarse sample
-    SampleSolution(MatrixGraphs &solMGraphs, SampleID id) :
-        id(id), U(Vector(solMGraphs[id.level.mGfine])) {
+    SampleSolution(MatrixGraphs *solMGraphs, SampleID id) :
+        id(id), U(Vector((*solMGraphs)[id.level.mGfine])) {
         Init();
     }