serialization

问题 For various reasons I am having to send a typed dataset to a WCF service endpoint. This works fine except that upon Deserializing, the RowState of each row in each DataTable is set to 'Added', regardless of what they were on the client. If I write the serialized stream out to a file, I see that the RowState is not part of the Serialized data. How can I add this so that I can preserve the RowState across service boundaries? Not that I think it matters, but the client process is running .net 3

问题 To send intent with any object from one activity to another activity we can use Parcelable Interface or Serializable Interface. What is the difference between two? Which one is preferable to use? Moreover, we can send string, integer type of object without using all this Interface. How it is possible? 回答1: Java Serializable: Serializable comes from standard Java and is much easier to implement all you need to do is implement the Serializable interface and add override two methods. private

问题 In spark, java serialization is the default, if kryo is that efficient then why it is not set as default. Is there some cons using kryo or in what scenarios we should use kryo or java serialization? 回答1: Here is comment from documentation: Kryo is significantly faster and more compact than Java serialization (often as much as 10x), but does not support all Serializable types and requires you to register the classes you’ll use in the program in advance for best performance. So it is not used

问题 This is an example of my serialized data: a:10:{s:7:"contact";s:1:"1";s:19:"profile_affiliation";s:23:"University, Inc.";s:18:"profile_first_name";s:3:"Ben";s:22:"profile_street_address";s:19:"8718 Tot Ave. S.";s:12:"profile_city";s:6:"Mobile";s:13:"profile_state";s:2:"AL";s:15:"profile_country";s:3:"USA";s:15:"profile_zipcode";s:5:"36695";s:18:"profile_home_phone";s:10:"2599494420";s:17:"profile_last_name";s:6:"Powers";} I want to be able to parse through it with PHP and display the values

问题 I've seen plenty of examples online but either I cannot make sense of the application or the example is too different from mine for me to transpose. I have a XML <Interfaces> <Interface> <InterfaceCode>987</InterfaceCode> <AccessID>asdf</AccessID> <Password>654321</Password> </Interface> <Interface> <InterfaceCode>789</InterfaceCode> <AccessID> </AccessID> <Password> </Password> </Interface> </Interfaces> And the following classes <Serializable(), XmlRoot("Interfaces"), XmlType("Interfaces")>

问题 I am running into a bit of a problem with Protoc and my existing struct that contains nullable string fields. The struct I am trying to serialize for transmission contains a bunch of fields that are nullable in json (so we can distinguish between null , "" and a set value). type Message struct { Path *string `json:"path"` } So if a user sends a empty json string {} the Path will be nil and not "" , whereas {"path":""} is also valid and a different case from {"path": null} . The proto3

问题 I would like to do something like the following: models.py class Container(models.Model): size = models.CharField(max_length=20) shape = models.CharField(max_length=20) class Item(models.Model): container = models.ForeignKey(Container) name = models.CharField(max_length=20) color = models.CharField(max_length=20) class ItemSetting(models.Model): item = models.ForeignKey(Item) attribute_one = models.CharField(max_length=20) attribute_two = models.CharField(max_length=20) serializers.py class

问题 Here's the code. [Serializable] public class HostedGame { public int ID { get; set; } public int UID { get; set; } public String Name { get; set; } public Boolean Available { get; set; } public String Description { get; set; } public List<int> Users { get; set; } public int Port { get; set; } public HostedGame(int uid, String name, String description, int port) { UID = uid; Name = name; Description = description; Available = true; Port = port; Users = new List<int>(); } public int CompareTo

问题 Here's the code. [Serializable] public class HostedGame { public int ID { get; set; } public int UID { get; set; } public String Name { get; set; } public Boolean Available { get; set; } public String Description { get; set; } public List<int> Users { get; set; } public int Port { get; set; } public HostedGame(int uid, String name, String description, int port) { UID = uid; Name = name; Description = description; Available = true; Port = port; Users = new List<int>(); } public int CompareTo

问题 I have a JSON structure that incorporates a wrapping level that I don't have in my POJOs. Like so: JSON: { "category1": { "cat1Prop1": "c1p1", "cat1Prop2": "c1p2", "cat1Prop3": "c1p3" }, "category2": { "cat2Prop1": "c2p1", "cat2Prop2": "c2p2" }, "category3": { "cat3Prop1": "c3p1", "cat3Prop2": "c3p2", "cat3Prop3": "c3p3" }, "category4": { "cat4Prop1": "c4p1" } } POJO: public class MyPojo { private String cat1Prop1; private String cat1Prop2; private String cat1Prop3; private String cat2Prop1;