Mod: use empty

src/Mod/TechDraw/App/AppTechDrawPy.cpp

@@ -392,7 +392,7 @@ private:
             if(ew.perform()) {
                 std::vector<TopoDS_Wire> rw = ew.getResultNoDups();
                 std::vector<TopoDS_Wire> sortedWires = ew.sortStrip(rw,true);
-                if(sortedWires.size()) {
+                if(!sortedWires.empty()) {
                     outerWire = new TopoShapeWirePy(new TopoShape(*sortedWires.begin()));
                     success = true;
                 }

src/Mod/TechDraw/App/DrawUtil.cpp

@@ -848,7 +848,7 @@ unsigned int DrawUtil::intervalMerge(std::vector<std::pair<double, bool>> &marki
     unsigned int i = 0;
     bool last = false;
 
-    if (wraps && marking.size() > 0) {
+    if (wraps && !marking.empty()) {
         last = marking.back().second;
     }
 

src/Mod/TechDraw/App/DrawViewDimExtent.cpp

@@ -164,7 +164,7 @@ std::vector<std::string> DrawViewDimExtent::getSubNames(void)
 {
     std::vector<std::string> edgeNames = Source.getSubValues();
     if (edgeNames.empty() ||
-        edgeNames[0].size() != 0) {
+        !edgeNames[0].empty()) {
         return std::vector<std::string>(); //garbage first entry - nop
     }
     return edgeNames;
@@ -184,7 +184,7 @@ pointPair DrawViewDimExtent::getPointsTwoVerts()
     }
 
     std::vector<std::string> cTags = CosmeticTags.getValues();
-    if (cTags.size() < 1) {
+    if (cTags.empty()) {
         return errorValue;
     }
     
@@ -206,7 +206,7 @@ bool DrawViewDimExtent::checkReferences2D() const
     }
 
     std::vector<std::string> cTags = CosmeticTags.getValues();
-    if (cTags.size() < 1) {
+    if (cTags.empty()) {
         return false;
     }
     

src/Mod/TechDraw/App/EdgeWalker.cpp

@@ -376,7 +376,7 @@ std::vector<TopoDS_Wire> EdgeWalker::sortStrip(std::vector<TopoDS_Wire> fw, bool
         }
     }
     std::vector<TopoDS_Wire> sortedWires = sortWiresBySize(closedWires,false);           //biggest 1st
-    if (!sortedWires.size()) {
+    if (sortedWires.empty()) {
         Base::Console().Log("INFO - EW::sortStrip - no sorted Wires!\n");
         return sortedWires;                                     // might happen in the middle of changes?
     }