layer 7 protocols list

After the introduction in the above article, the entire system framework is basically complete. Below, we need to implement each layer. For the implementation of the data Access layer, I will discuss three implementation methods. This article discusses the first one: Access + dynamic generation of SQL. As the name suggests, this implementation uses Access as the background database, and After the introducti

; * TreeLinkNode(int x) { val = x; } * } */ public void connect(TreeLinkNode root) { if(root==null) return; List [Analysis 2-non-original] The above traversal conforms to various types of Binary Trees, not necessarily a full binary tree, but the topic limits the perfect binary tree. You can use a more concise method. For example, you can use pre. Left to determine whether to probe the bottom. Reference: https://oj.le

1: Set 2 Collection (Single column collection) 3 List (ordered, repeatable) 4 ArrayList 5 The underlying data structure is an array, query fast, delete and subtract slowly 6 Thread insecure, high efficiency 7 Vector 8 The underlying data structure is an array, fast query, delete and deletion slow 9 thread safety, low efficiency 10 LinkedList 11 The underlying data structure is linked

Layouts in your project that need to achieve the following effectsThat is, a white background rectangle with rounded corners at the left and right corner, with no rounded corners, and only a light gray color, with only the top and bottom borders.Of course, cut a. 9 image as a background can also be achieved, but can be implemented in code or as far as possible in code implementation, because the picture is too much one consumes memory, the other also increases the APK size.This effect can be ach

* ** List interface An ordered collection (also known as a sequence ). unlike sets, lists typically allow duplicate elements. the List interface is a Collection sub-interface. The elements in the container class that implements the List interface are ordered and can be repeated. Each element in the List container corre