wrap global function in anonymous namespace

src/StepParityCost.cpp

@@ -6,9 +6,9 @@
 
 using namespace StepParity;
 
-
-template <typename T>
-bool isEmpty(const std::vector<T> & vec, int columnCount) {
+namespace {
+	template <typename T>
+	bool isEmpty(const std::vector<T> & vec, int columnCount) {
 		for (int i = 0; i < columnCount; i++)
 		{
 			if(static_cast<int>(vec[i]) != 0)
@@ -17,9 +17,9 @@ bool isEmpty(const std::vector<T> & vec, int columnCount) {
 			}
 		}
 		return true;
+	}
 }
 
-
 float StepParityCost::getActionCost(State * initialState, State * resultState, std::vector<Row>& rows, int rowIndex, float elapsedTime)
 {
 	Row &row = rows[rowIndex];