STYLE: argList::opt method instead of the longer argList::lookupOrDefault

- also replaced a few instances of readIfPresent with opt<> for
  constant values.

applications/utilities/postProcessing/dataConversion/foamToEnsight/foamToEnsight.C

@@ -237,7 +237,7 @@ int main(int argc, char *argv[])
     ensightCase::options caseOpts(format);
 
     caseOpts.nodeValues(args.found("nodeValues"));
-    caseOpts.width(args.lookupOrDefault<label>("width", 8));
+    caseOpts.width(args.opt<label>("width", 8));
     caseOpts.overwrite(true); // remove existing output directory
 
     // Can also have separate directory for lagrangian
@@ -247,7 +247,7 @@ int main(int argc, char *argv[])
     // Define sub-directory name to use for EnSight data.
     // The path to the ensight directory is at case level only
     // - For parallel cases, data only written from master
-    fileName outputDir = args.lookupOrDefault<word>("name", "EnSight");
+    fileName outputDir = args.opt<word>("name", "EnSight");
     if (!outputDir.isAbsolute())
     {
         outputDir = args.globalPath()/outputDir;

applications/utilities/postProcessing/dataConversion/foamToEnsightParts/foamToEnsightParts.C

@@ -203,7 +203,7 @@ int main(int argc, char *argv[])
     //
     ensightCase::options caseOpts(format);
 
-    caseOpts.width(args.lookupOrDefault<label>("width", 8));
+    caseOpts.width(args.opt<label>("width", 8));
     caseOpts.overwrite(false); // leave existing output directory
 
     // Can also have separate directory for lagrangian
@@ -212,7 +212,7 @@ int main(int argc, char *argv[])
     // Define sub-directory name to use for EnSight data.
     // The path to the ensight directory is at case level only
     // - For parallel cases, data only written from master
-    fileName ensightDir = args.lookupOrDefault<word>("name", "Ensight");
+    fileName ensightDir = args.opt<word>("name", "Ensight");
     if (!ensightDir.isAbsolute())
     {
         ensightDir = args.globalPath()/ensightDir;

applications/utilities/postProcessing/dataConversion/foamToVTK/foamToVTK.C

@@ -564,8 +564,7 @@ int main(int argc, char *argv[])
     else
     {
         regionNames.resize(1);
-        regionNames.first() =
-            args.lookupOrDefault<word>("region", fvMesh::defaultRegion);
+        regionNames.first() = args.opt<word>("region", fvMesh::defaultRegion);
     }
 
 
@@ -627,7 +626,7 @@ int main(int argc, char *argv[])
     // Directory management
 
     // Sub-directory for output
-    const word vtkDirName = args.lookupOrDefault<word>("name", "VTK");
+    const word vtkDirName = args.opt<word>("name", "VTK");
 
     const fileName outputDir(runTime.globalPath()/vtkDirName);
 

applications/utilities/postProcessing/lumped/lumpedPointMovement/lumpedPointMovement.C

@@ -91,10 +91,10 @@ int main(int argc, char *argv[])
 
     #include "setRootCase.H"
 
-    const label maxOut = Foam::max(0, args.lookupOrDefault<label>("max", 0));
-    const label span   = Foam::max(1, args.lookupOrDefault<label>("span", 1));
+    const label maxOut = Foam::max(0, args.opt<label>("max", 0));
+    const label span   = Foam::max(1, args.opt<label>("span", 1));
 
-    const scalar relax = args.lookupOrDefault<scalar>("scale", 1);
+    const scalar relax = args.opt<scalar>("scale", 1);
 
     const bool slave = args.found("slave");
     const bool removeLock = args.found("removeLock");

applications/utilities/postProcessing/miscellaneous/temporalInterpolate/temporalInterpolate.C

@@ -234,16 +234,13 @@ int main(int argc, char *argv[])
     }
 
 
-    int divisions = 1;
-    args.readIfPresent("divisions", divisions);
+    const int divisions = args.opt<int>("divisions", 1);
     Info<< "Using " << divisions << " per time interval" << nl << endl;
 
 
-    const word interpolationType = args.lookupOrDefault<word>
-    (
-        "interpolationType",
-        "linear"
-    );
+    const word interpolationType =
+        args.opt<word>("interpolationType", "linear");
+
     Info<< "Using interpolation " << interpolationType << nl << endl;