首先django-restframework是基于django的一个框架. mixins.py中开头是这样写的: Basic building blocks for generic class based views. We don't bind bahaviour to http method handlers yet, whick allows mixin classes to be composed in interesting ways. generics是把对数据库的增删改查都…
benifit: 1.make developers extremely productive is code reuse, which is the ability to derive a class that inherits all of the capabilities of a base class. The derived class can simply override virtual methods or add some new methods to customize th…
概述 Generics - This long-awaited enhancement to the type system allows a type or method to operate on objects of various types while providing compile-time type safety. It adds compile-time type safety to the Collections Framework and eliminates the d…
The beginning of this chapter introduced the idea of writing code that can be applied as generally as possible. To do this, we need ways to loosen the constraints on the types that our code works with, without losing the benefits of static type check…