remove DefaultStructRowsViewer and DefaultStructRowsViewerIgnoreUntagged

config.go

@@ -10,33 +10,22 @@ var (
 	// DefaultStructFieldNaming provides the default StructFieldNaming
 	// using "col" as title tag, ignores "-" titled fields,
 	// and uses SpacePascalCase for untagged fields.
+	// Implements the Viewer interface.
 	DefaultStructFieldNaming = StructFieldNaming{
 		Tag:      "col",
 		Ignore:   "-",
 		Untagged: SpacePascalCase,
 	}
 
-	// DefaultStructRowsViewer provides the default StructRowsViewer
-	// using "col" as title tag, ignores "-" titled fields,
-	// and uses SpacePascalCase for untagged fields.
-	DefaultStructRowsViewer = &StructRowsViewer{
-		StructFieldNaming: DefaultStructFieldNaming,
-	}
-
 	// DefaultStructFieldNamingIgnoreUntagged provides the default StructFieldNaming
 	// using "col" as title tag, ignores "-" titled as well as untitled fields.
+	// Implements the Viewer interface.
 	DefaultStructFieldNamingIgnoreUntagged = StructFieldNaming{
 		Tag:      "col",
 		Ignore:   "-",
 		Untagged: UseTitle("-"),
 	}
 
-	// DefaultStructRowsViewerIgnoreUntagged provides the default StructRowsViewer
-	// using "col" as title tag, ignores "-" titled as well as untitled fields.
-	DefaultStructRowsViewerIgnoreUntagged = &StructRowsViewer{
-		StructFieldNaming: DefaultStructFieldNamingIgnoreUntagged,
-	}
-
 	// SelectViewer selects the best matching Viewer implementation
 	// for the passed table type.
 	// By default it returns a StringsViewer for a [][]string table
@@ -45,7 +34,7 @@ var (
 		if _, ok := table.([][]string); ok {
 			return new(StringsViewer), nil
 		}
-		return DefaultStructRowsViewer, nil
+		return &DefaultStructFieldNaming, nil
 	}
 
 	noTagsStructRowsViewer StructRowsViewer

structfieldnaming.go

@@ -6,13 +6,17 @@ import (
 	"strings"
 )
 
+var _ Viewer = new(StructFieldNaming)
+
 // StructFieldNaming defines how struct fields
 // are mapped to column titles as used by View.
 //
 // nil is a valid value for *StructFieldNaming
 // and is equal to the zero value
 // which will use all exported struct fields
 // with their field name as column title.
+//
+// StructFieldNaming implements the Viewer interface.
 type StructFieldNaming struct {
 	// Tag is the struct field tag to be used as column title.
 	// If Tag is empty, then every struct field will be treated as untagged.