serialization

问题 How do I display the content of a JavaScript object in a string format like when we alert a variable? The same formatted way I want to display an object. 回答1: If you want to print the object for debugging purposes, use the code: var obj = {prop1: 'prop1Value', prop2: 'prop2Value', child: {childProp1: 'childProp1Value'}} console.log(obj) will display: Note: you must only log the object. For example, this won't work: console.log('My object : ' + obj) Note ' : You can also use a comma in the log

问题 How do I display the content of a JavaScript object in a string format like when we alert a variable? The same formatted way I want to display an object. 回答1: If you want to print the object for debugging purposes, use the code: var obj = {prop1: 'prop1Value', prop2: 'prop2Value', child: {childProp1: 'childProp1Value'}} console.log(obj) will display: Note: you must only log the object. For example, this won't work: console.log('My object : ' + obj) Note ' : You can also use a comma in the log

问题 I wish to have a custom GSON deserializer such that whenever it is deserializing a JSON object (i.e. anything within curly brackets { ... } ), it will look for a $type node and deserialize using its inbuilt deserializing capability to that type. If no $type object is found, it just does what it normal does. So for example, I would want this to work: { "$type": "my.package.CustomMessage" "payload" : { "$type": "my.package.PayloadMessage", "key": "value" } } public class CustomMessage { public

问题 I use Retrofit, Gson and Realm in my project. I have this class Example that need to be Serializable . Without Realm I'd write it like that : public class Example implements Serializable { @SerializationName("users") private List<String> users //... getters and setters } Realm comes into play and Example becomes (note that getters and setters are this way for compatibility reasons) : public class Example extends RealmObject implement Serializable { @SerializedName("users") private RealmList

问题 example of code with string also throws exception: LinkedList<string> l = new LinkedList<string>(); l.AddLast("Kuku"); l.AddLast("Riku"); l.AddLast("Ok"); List<LinkedListNode<string>> lst = new List<LinkedListNode<string>>(); lst.Add(l.First); lst.Add(l.First.Next); lst.Add(l.Last); string json = JsonConvert.SerializeObject(lst, Formatting.Indented, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Serialize }); File.WriteAllText(@"C:\Student Routine\Data.txt", json);

问题 example of code with string also throws exception: LinkedList<string> l = new LinkedList<string>(); l.AddLast("Kuku"); l.AddLast("Riku"); l.AddLast("Ok"); List<LinkedListNode<string>> lst = new List<LinkedListNode<string>>(); lst.Add(l.First); lst.Add(l.First.Next); lst.Add(l.Last); string json = JsonConvert.SerializeObject(lst, Formatting.Indented, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Serialize }); File.WriteAllText(@"C:\Student Routine\Data.txt", json);

问题 Which serialization is used for which case, From spark documentation it says : It provides two serialization libraries: 1. Java(default) and 2. Kryo Now where did Encoders come from and why is it not given in the doc. And also from databricks it says Encoders performs faster for Datasets,what about RDD, and how do all these maps together. In which case which serializer should we use? 回答1: Encoders are used in Dataset only. Kryo is used internally in spark. Kryo and Java serialization is

问题 Browsing .NET Reference source for some details on ClaimsIdentity class I noticed this: [NonSerialized] const string PreFix = "System.Security.ClaimsIdentity."; [NonSerialized] const string ActorKey = PreFix + "actor"; What might be a possible reason to use NonSerializedAttribute on a const ? 回答1: const values are serializable unless they have the NonSerializedAttribute attached to them. Whoever wrote that code, decided they didn't want to have those values serialized. Read the MSDN docs on

问题 I am trying to create a custom annotation to tokenize a given property always when it is annotated with, so I have the following structure: @JsonComponent public class TokenSerializer { @JsonSerialize(using = IdToTokenSerializer.class) // This does not work @JsonDeserialize(using = TokenToIdDeserializer.class) // This does not work @Retention(RetentionPolicy.RUNTIME) public static @interface TokenizedId { Class<?> value(); } public static class IdToTokenSerializer extends JsonSerializer<Long>

问题 I am newbie in djnago-rest-framework . I am leaning about creating instance with serializer in DRF . Let suppose I have models who look like this (models.py) : from django.db import models class Reporter(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30) email = models.EmailField() class Article(models.Model): headline = models.CharField(max_length=100) reporter = models.ForeignKey(Reporter, on_delete=models.CASCADE) My serializer look like