serialization

问题 I am working on a process that will likely end up attempting to serialize very large json arrays to file. So loading up the entire array in memory and just dumping to file won't work. I need to stream the individual items to file to avoid out of memory issues. Surprisingly, I can't find any examples of doing this. The code snippet below is something I've cobbled together. Is there a better way to do this? first_item = True with open('big_json_array.json', 'w') as out: out.write('[') for item

问题 I am working on a process that will likely end up attempting to serialize very large json arrays to file. So loading up the entire array in memory and just dumping to file won't work. I need to stream the individual items to file to avoid out of memory issues. Surprisingly, I can't find any examples of doing this. The code snippet below is something I've cobbled together. Is there a better way to do this? first_item = True with open('big_json_array.json', 'w') as out: out.write('[') for item

问题 I'm new to object serialization, and in the course of my learning how to read from and write to a file (deserialize and serialize) using BinaryFormatter , I came across BinaryReader and BinaryWriter , which seemed to be doing the same thing. Is there some subtle difference between BinaryFormatter.Serialize() and BinaryWriter ? Or is BinaryWriter just a more compact way performing the the same action as BinaryFormatter.Serialize() ? 回答1: BinaryWriter is used to write primitive types in binary

问题 I'm new to object serialization, and in the course of my learning how to read from and write to a file (deserialize and serialize) using BinaryFormatter , I came across BinaryReader and BinaryWriter , which seemed to be doing the same thing. Is there some subtle difference between BinaryFormatter.Serialize() and BinaryWriter ? Or is BinaryWriter just a more compact way performing the the same action as BinaryFormatter.Serialize() ? 回答1: BinaryWriter is used to write primitive types in binary

问题 I have to convert values (double/float in C#) to bytes and need some help.. // Datatype long 4byte -99999999,99 to 99999999,99 // Datatype long 4byte -99999999,9 to 99999999,9 // Datatype short 2byte -999,99 to 999,99 // Datatype short 2byte -999,9 to 999,9 In my "world at home" i would just string it and ASCII.GetBytes(). But now, in this world, we have to make less possible space. And indeed that '-99999999,99' takes 12 bytes instead of 4! if it's a 'long' datatype. [EDIT] Due to some help

问题 I have to convert values (double/float in C#) to bytes and need some help.. // Datatype long 4byte -99999999,99 to 99999999,99 // Datatype long 4byte -99999999,9 to 99999999,9 // Datatype short 2byte -999,99 to 999,99 // Datatype short 2byte -999,9 to 999,9 In my "world at home" i would just string it and ASCII.GetBytes(). But now, in this world, we have to make less possible space. And indeed that '-99999999,99' takes 12 bytes instead of 4! if it's a 'long' datatype. [EDIT] Due to some help

问题 Recently come across the following conundrum: Standards The Typescript documentation suggests creating object definitions with private members having an underscore prefix, allowing getters/setters to utilize the original 'name' of said members, providing indirect public access (as they should). The Angular documentation recommends otherwise, however does not provide an example of using getters & setters for the private variable in their object definition example. The Issue I've been following

问题 I am faced with a problem that gives me this error: A circular reference has been detected when serializing the object of class "App\Entity\User" (configured limit: 1) I have an Enterprise entity that has mission orders, vehicles, and users. An orders entity that has a relationship with a User, Company, and Vehicle. And a User entity that has a relationship with orders and company. So I have this: Entreprise.php class Entreprise { /** * @ORM\Id() * @ORM\GeneratedValue() * @ORM\Column(type=

来源： https://stackoverflow.com/questions/54279397/create-nested-objects-in-django-rest-framework

来源： https://stackoverflow.com/questions/64832448/django-onetoone-relationship-how-to-serialize-it