Performance optimization, use the array index instead of the value in range.

1 files changed, 4 insertions, 4 deletions

diff --git a/rows.go b/rows.go
index 9bbbec2..78ed664 100644
--- a/rows.go
+++ b/rows.go
@@ -266,11 +266,11 @@ func (f *File) InsertRow(sheet string, row int) {
 // 3000 rows one sheet).
 func checkRow(xlsx *xlsxWorksheet) {
 	buffer := bytes.Buffer{}
-	for k, v := range xlsx.SheetData.Row {
-		lenCol := len(v.C)
+	for k := range xlsx.SheetData.Row {
+		lenCol := len(xlsx.SheetData.Row[k].C)
 		if lenCol > 0 {
-			endR := string(strings.Map(letterOnlyMapF, v.C[lenCol-1].R))
-			endRow, _ := strconv.Atoi(strings.Map(intOnlyMapF, v.C[lenCol-1].R))
+			endR := string(strings.Map(letterOnlyMapF, xlsx.SheetData.Row[k].C[lenCol-1].R))
+			endRow, _ := strconv.Atoi(strings.Map(intOnlyMapF, xlsx.SheetData.Row[k].C[lenCol-1].R))
 			endCol := TitleToNumber(endR) + 1
 			if lenCol < endCol {
 				oldRow := xlsx.SheetData.Row[k].C