STYLE: consistent lookupOrDefault template parameters

- in many cases can just use lookupOrDefault("key", bool) instead of
  lookupOrDefault<bool> or lookupOrDefault<Switch> since reading a
  bool from an Istream uses the Switch(Istream&) anyhow

STYLE: relocated Switch string names into file-local scope

src/functionObjects/field/fieldMinMax/fieldMinMax.C

@@ -136,7 +136,7 @@ bool Foam::functionObjects::fieldMinMax::read(const dictionary& dict)
     fvMeshFunctionObject::read(dict);
     writeFile::read(dict);
 
-    location_ = dict.lookupOrDefault<Switch>("location", true);
+    location_ = dict.lookupOrDefault("location", true);
 
     mode_ = modeTypeNames_.lookupOrDefault("mode", dict, modeType::mdMag);
 

src/functionObjects/field/fieldMinMax/fieldMinMax.H

@@ -118,8 +118,8 @@ protected:
         //- Mode type names
         static const Enum<modeType> modeTypeNames_;
 
-        //- Switch to write location of min/max values
-        Switch location_;
+        //- Write location of min/max values?
+        bool location_;
 
         //- Mode for min/max - only applicable for ranks > 0
         modeType mode_;

src/functionObjects/field/regionSizeDistribution/regionSizeDistribution.C

@@ -319,7 +319,7 @@ Foam::functionObjects::regionSizeDistribution::regionSizeDistribution
     writeFile(obr_, name),
     alphaName_(dict.lookup("field")),
     patchNames_(dict.lookup("patches")),
-    isoPlanes_(dict.lookupOrDefault<bool>("isoPlanes", false))
+    isoPlanes_(dict.lookupOrDefault("isoPlanes", false))
 {
     read(dict);
 }

src/functionObjects/graphics/runTimePostProcessing/functionObjectBase.C

@@ -89,7 +89,7 @@ Foam::functionObjects::runTimePostPro::functionObjectBase::functionObjectBase
     fieldVisualisationBase(dict, colours),
     state_(state),
     functionObjectName_(""),
-    clearObjects_(dict.lookupOrDefault<bool>("clearObjects", false))
+    clearObjects_(dict.lookupOrDefault("clearObjects", false))
 {
     dict.lookup("functionObject") >> functionObjectName_;
 }

src/functionObjects/graphics/runTimePostProcessing/text.C

@@ -49,7 +49,7 @@ Foam::functionObjects::runTimePostPro::text::text
     size_(readScalar(dict.lookup("size"))),
     colour_(nullptr),
     bold_(readBool(dict.lookup("bold"))),
-    timeStamp_(dict.lookupOrDefault<bool>("timeStamp", false))
+    timeStamp_(dict.lookupOrDefault("timeStamp", false))
 {
     if (dict.found("colour"))
     {

src/functionObjects/solvers/scalarTransport/scalarTransport.C

@@ -209,7 +209,7 @@ Foam::functionObjects::scalarTransport::scalarTransport
     resetOnStartUp_(false),
     schemesField_("unknown-schemesField"),
     fvOptions_(mesh_),
-    bounded01_(dict.lookupOrDefault<Switch>("bounded01", true))
+    bounded01_(dict.lookupOrDefault("bounded01", true))
 {
     read(dict);
 

src/functionObjects/utilities/runTimeControl/runTimeCondition/runTimeCondition/runTimeCondition.C

@@ -82,7 +82,7 @@ Foam::functionObjects::runTimeControls::runTimeCondition::runTimeCondition
     name_(name),
     obr_(obr),
     state_(state),
-    active_(dict.lookupOrDefault<bool>("active", true)),
+    active_(dict.lookupOrDefault("active", true)),
     conditionDict_(setConditionDict()),
     log_(dict.lookupOrDefault("log", true)),
     groupID_(dict.lookupOrDefault("groupID", -1))

src/functionObjects/utilities/vtkWrite/vtkWrite.C

@@ -70,7 +70,7 @@ bool Foam::functionObjects::vtkWrite::read(const dictionary& dict)
     // writer options - default is xml base64
     //
     writeOpts_ = vtk::formatType::INLINE_BASE64;
-    if (dict.lookupOrDefault<bool>("legacy", false))
+    if (dict.lookupOrDefault("legacy", false))
     {
         writeOpts_.legacy(true);
     }
@@ -99,7 +99,7 @@ bool Foam::functionObjects::vtkWrite::read(const dictionary& dict)
     //
     dict.readIfPresent("directory", dirName_);
 
-    writeIds_ = dict.lookupOrDefault<bool>("writeIds", false);
+    writeIds_ = dict.lookupOrDefault("writeIds", false);
 
 
     //