ENH: use restricted dictionary lookup for utilities (issue #762)

- get<label>, get<scalar> instead of readLabel, readScalar, etc.

applications/utilities/preProcessing/wallFunctionTable/tabulatedWallFunction/SpaldingsLaw/SpaldingsLaw.C

@@ -124,8 +124,8 @@ Foam::tabulatedWallFunctions::SpaldingsLaw::SpaldingsLaw
 )
 :
     tabulatedWallFunction(dict, mesh, typeName),
-    kappa_(readScalar(coeffDict_.lookup("kappa"))),
-    E_(readScalar(coeffDict_.lookup("E")))
+    kappa_(coeffDict_.get<scalar>("kappa")),
+    E_(coeffDict_.get<scalar>("E"))
 {
     invertFunction();
 
@@ -136,12 +136,6 @@ Foam::tabulatedWallFunctions::SpaldingsLaw::SpaldingsLaw
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::tabulatedWallFunctions::SpaldingsLaw::~SpaldingsLaw()
-{}
-
-
 // * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
 Foam::scalar Foam::tabulatedWallFunctions::SpaldingsLaw::yPlus

applications/utilities/preProcessing/wallFunctionTable/tabulatedWallFunction/SpaldingsLaw/SpaldingsLaw.H

@@ -105,8 +105,9 @@ public:
     // Constructors
     SpaldingsLaw(const dictionary& dict, const polyMesh& mesh);
 
+
     //- Destructor
-    virtual ~SpaldingsLaw();
+    virtual ~SpaldingsLaw() = default;
 
 
     // Member Functions