trying to fix error to remove element

p2p/speedtest.go

@@ -8,7 +8,7 @@ func (ip *IpAddresses)SpeedTest() error{
 		err := ip.IpAddress[i].PingTest()
 		if err != nil {
 			// Remove IP address of element not pingable 
-			ip.IpAddress = append(ip.IpAddress[:i], ip.IpAddress[i+1:]...)
+			ip.IpAddress = remove(ip.IpAddress,i)
 			// Proceed to next element in the array  
 			continue
 		}
@@ -86,3 +86,8 @@ func LocalSpeedTestIpTable() error {
 	return nil
 }
 
+// Helper function to remove element from an array of a struct
+func remove(s []IpAddress, i int) []IpAddress {
+	s[len(s)-1], s[i] = s[i], s[len(s)-1]
+	return s[:len(s)-1]
+}