BUG: incorrect HashTable / HashSet instances

- Eg instead of using labelHashSet, used HashSet<label> which uses
  the string::hash for hashing. Other places inadvertently using the
  string::hash instead of Hash<label> for hashing.

STYLE: use Map<..> instead of HashTable<.., label, Hash<label>>

- reduces clutter

applications/utilities/mesh/conversion/ideasUnvToFoam/ideasUnvToFoam.C

@@ -853,7 +853,7 @@ int main(int argc, char *argv[])
 
     labelList own(boundaryFaces.size(), -1);
     labelList nei(boundaryFaces.size(), -1);
-    HashTable<label, label> faceToCell[2];
+    Map<label> faceToCell[2];
 
     {
         HashTable<label, face, Hash<face>> faceToFaceID(boundaryFaces.size());

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/PrintTable/PrintTable.C

@@ -54,13 +54,6 @@ Foam::PrintTable<KeyType, DataType>::PrintTable
 {}
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-template<class KeyType, class DataType>
-Foam::PrintTable<KeyType, DataType>::~PrintTable()
-{}
-
-
 // * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
 template<class KeyType, class DataType>
@@ -71,7 +64,7 @@ void Foam::PrintTable<KeyType, DataType>::print
     const bool printAverage
 ) const
 {
-    HashTable<HashTable<DataType, label>, KeyType> combinedTable;
+    HashTable<Map<DataType>, KeyType> combinedTable;
 
     List<HashTableData> procData(Pstream::nProcs(), HashTableData());
 
@@ -90,36 +83,25 @@ void Foam::PrintTable<KeyType, DataType>::print
         {
             const HashTableData& procIData = procData[proci];
 
-            for
-            (
-                typename HashTableData::const_iterator iter = procIData.begin();
-                iter != procIData.end();
-                ++iter
-            )
+            forAllConstIters(procIData, iter)
             {
                 if (!combinedTable.found(iter.key()))
                 {
                     combinedTable.insert
                     (
                         iter.key(),
-                        HashTable<DataType, label>()
+                        Map<DataType>()
                     );
                 }
 
-                HashTable<DataType, label>& key = combinedTable[iter.key()];
+                Map<DataType>& key = combinedTable[iter.key()];
 
-                key.insert(proci, iter());
+                key.insert(proci, iter.object());
 
-                for
-                (
-                    typename HashTable<DataType, label>
-                        ::const_iterator dataIter = key.begin();
-                    dataIter != key.end();
-                    ++dataIter
-                )
+                forAllConstIters(key, dataIter)
                 {
                     std::ostringstream buf;
-                    buf << dataIter();
+                    buf << dataIter.object();
 
                     largestDataLength = max
                     (
@@ -172,7 +154,7 @@ void Foam::PrintTable<KeyType, DataType>::print
 
         forAll(sortedTable, keyI)
         {
-            const HashTable<DataType, label>& procDataList
+            const Map<DataType>& procDataList
                 = combinedTable[sortedTable[keyI]];
 
             os.width(largestKeyLength);

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/PrintTable/PrintTable.H

@@ -101,7 +101,7 @@ public:
 
 
     //- Destructor
-    ~PrintTable();
+    ~PrintTable() = default;
 
 
     // Member Functions

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/featurePointConformer/pointFeatureEdgesTypes.C

@@ -33,18 +33,12 @@ Foam::pointFeatureEdgesTypes::pointFeatureEdgesTypes
     const label pointLabel
 )
 :
-    HashTable<label, extendedFeatureEdgeMesh::edgeStatus>(),
+    HashTable<label, extendedFeatureEdgeMesh::edgeStatus, Hash<label>>(),
     feMesh_(feMesh),
     pointLabel_(pointLabel)
 {}
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::pointFeatureEdgesTypes::~pointFeatureEdgesTypes()
-{}
-
-
 // * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
 Foam::List<Foam::extendedFeatureEdgeMesh::edgeStatus>
@@ -79,18 +73,12 @@ Foam::Ostream& Foam::operator<<
 {
     os  << "Point = " << p.pointLabel_ << endl;
 
-    for
-    (
-        HashTable<label, extendedFeatureEdgeMesh::edgeStatus>
-            ::const_iterator iter = p.cbegin();
-        iter != p.cend();
-        ++iter
-    )
+    forAllConstIters(p, iter)
     {
         os  << "    "
             << extendedFeatureEdgeMesh::edgeStatusNames_[iter.key()]
             << " = "
-            << iter()
+            << iter.object()
             << endl;
     }
 

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/conformalVoronoiMesh/featurePointConformer/pointFeatureEdgesTypes.H

@@ -58,7 +58,7 @@ Ostream& operator<<(Ostream&, const pointFeatureEdgesTypes&);
 //- Hold the types of feature edges attached to the point.
 class pointFeatureEdgesTypes
 :
-    public HashTable<label, extendedFeatureEdgeMesh::edgeStatus>
+    public HashTable<label, extendedFeatureEdgeMesh::edgeStatus, Hash<label>>
 {
     // Private data
 
@@ -82,7 +82,7 @@ public:
 
 
     //- Destructor
-    ~pointFeatureEdgesTypes();
+    ~pointFeatureEdgesTypes() = default;
 
 
     // Member Functions