Xcode问题导航器：蓝色箭头图标是什么意思？

Question

在Xcode版本7.3.1（7D1014）上，在问题导航器中，我在项目行的右侧有一个我无法理解的图标。

你知道这是什么意思吗？

Answer 1

好的，这实际上是一个 ''get ftnorder data Dim entity As New NSWebUtilityEntities Dim ftnOrder = (From f In entity.FTNFTPOrders Where f.PONum = amazonOrder.AmazonOrderID And f.SalesOrderNum = amazonOrder.GPOrderNumber Select f).ToList()(0) Dim fulfillmentdata As New NSAmazonFulfillmentData() Dim carrier As Integer = (From s In entity.ShippingMethods Where s.ShippingMethodId = ftnOrder.ShippingMethodId Select s.CarrierId).ToList()(0) fulfillmentdata.CarrierCode = (From c In entity.Carriers Where c.CarrierId = carrier Select c.Code).ToList()(0) fulfillmentdata.CarrierName = (From c In entity.Carriers Where c.CarrierId = carrier Select c.Description).ToList()(0) fulfillmentdata.ShipperTrackingNumber = ftnOrder.Tracking1 fulfillmentdata.ShippingMethod = (From s In entity.ShippingMethods Where s.ShippingMethodId = ftnOrder.ShippingMethodId Select s.Name).ToList()(0) Dim appName As String = "CSharpSampleCode" Dim appVersion As String = "1.0" Dim serviceURL As String = "https://mws.amazonservices.com" Dim accessKeyId As String = AmazonEntity.AccessKey Dim secretAccessKey As String = AmazonEntity.SecretKey Dim sellerid As String = AmazonEntity.SellerID Dim config As New MarketplaceWebService.MarketplaceWebServiceConfig config.ServiceURL = serviceURL Dim service As New MarketplaceWebService.MarketplaceWebServiceClient( accessKeyId, secretAccessKey, appName, appVersion, config) '----create and write XML file Dim pre_message As String = "" pre_message = pre_message + "<Message>" pre_message = pre_message + "<MessageID>" + "1" + "</MessageID>" pre_message = pre_message + "<OrderFulfillment>" pre_message = pre_message + "<AmazonOrderID>" + amazonOrder.AmazonOrderID + "</AmazonOrderID>" Dim dd As DateTime = ftnOrder.ShipDt pre_message = pre_message + "<FulfillmentDate>" + dd.ToUniversalTime + "</FulfillmentDate>" pre_message = pre_message + "<FulfillmentData>" pre_message = pre_message + "<CarrierCode>" + fulfillmentdata.CarrierCode + "</CarrierCode>" pre_message = pre_message + "<ShippingMethod>" + fulfillmentdata.ShippingMethod + "</ShippingMethod>" pre_message = pre_message + "<ShipperTrackingNumber>" + fulfillmentdata.ShipperTrackingNumber + "</ShipperTrackingNumber>" pre_message = pre_message + "</FulfillmentData>" pre_message = pre_message + "</OrderFulfillment>" pre_message = pre_message + "<Item>" pre_message = pre_message + "<AmazonOrderItemCode>" + amazonOrder.OrderItems(0).OrderItemId + "</AmazonOrderItemCode>" pre_message = pre_message + "<Quantity>1</Quantity>" pre_message = pre_message + "</Item>" pre_message = pre_message + "</Message>" Dim feed As String = "" feed = feed + "<?xml version='1.0'?>" feed = feed + "<AmazonEnvelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='amzn-envelope.xsd'> " feed = feed + "<Header>" feed = feed + "<DocumentVersion>1.01</DocumentVersion>" feed = feed + "<MerchantIdentifier>" + sellerid + "</MerchantIdentifier>" feed = feed + "</Header>" feed = feed + "<MessageType>OrderFulfillment</MessageType>" feed = feed + pre_message feed = feed + "</AmazonEnvelope>" feed.Trim() Dim myPath As String = AppDomain.CurrentDomain.BaseDirectory + "\" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + "tmp.xml" If File.Exists(myPath) Then File.Delete(myPath) ElseIf Not File.Exists(myPath) Then ' Create a file to write to. Dim sw As StreamWriter = File.CreateText(myPath) sw.Write(feed) sw.Close() End If Dim request As New SubmitFeedRequest() request.Merchant = sellerid request.MarketplaceIdList = New IdList() Dim m As New List(Of String) m.Add(AmazonEntity.MarketPlaceID) request.MarketplaceIdList.Id = New List(Of String) request.MarketplaceIdList.Id = m request.FeedContent = File.Open(myPath, FileMode.Open, FileAccess.Read) request.ContentMD5 = MarketplaceWebService.MarketplaceWebServiceClient.CalculateContentMD5(request.FeedContent) request.FeedContent.Position = 0 request.PurgeAndReplace = False request.FeedType = "_POST_ORDER_FULFILLMENT_DATA_" response = service.SubmitFeed(request) Catch ex As MarketplaceWebService.MarketplaceWebServiceException ' Exception properties are important for diagnostics. Catch ex2 As Exception End Try Return response 问题。 当项目存在内存管理问题时会发生这种情况。

有关这方面的更多信息可以在这里找到：
https://developer.apple.com/library/mac/recipes/xcode_help-source_editor/chapters/Analyze.html