Programming VIP

AoP Before reading, let's take a look at some questions about burial sites and see if this article is useful for you. The entry and exit of each page need buried statistics. Many button clicks require statistical reporting. The performance data of some functions need statistics. Well, if you encounter these problems, then tell you that AOP ...

Holiday first \(Blog\) is Pigeon's first semester ranking 233 Here are some common sorting and optimizations ~ Insert Sort\((Insertion\) Select Sort\((Selection\) (Sort)\) Bubble Sorting((Bubble\) Sort\) Hill Sort\((Shell\) Sort\) Heap Sorting((Heap\) Sort\) Quick Sort\((Quick\) Sort\) Merge Sort\((Merge\) Cardinality Sort\((Radix\) (So ...

In the Linux shell, the type of the value of a variable is a string by default and cannot be directly numerically calculated. [root@localhost ~]# a=9 [root@localhost ~]# b=15 [root@localhost ~]# c=$a+$b [root@localhost ~]# echo $c 9+15 In order to perform numerical operations on variables, special methods are needed. 1. declare declares ...

DES Encryption Introduction: DES is a symmetric encryption algorithm, the so-called symmetric encryption algorithm is: encryption and decryption using the same key algorithm. DES encryption arithmetic originated from IBM research and was formally adopted by the U.S. government. It has been widely used since then. But in recent years, it has ...

Project address: https://github.com/liaohuqiu/android-Ultra-Pull-To-Refresh 1. Functional introduction Drop-down refresh is a feature that almost every Android application needs. android-Ultra-Pull-To-Refresh (hereinafter referred to as UltraPTR) is a powerful Andriod drop-down refresh framework. Main features: (1) Inherited from Vi ...

Links to the original text: http://www.cnblogs.com/viinye/archive/2012/12/22/2829160.html Chapter 1 Structure of this chapter 1.1 Java grammar 1.2 Data Abstraction 1.3 Collection class abstract data types: Bags, Queues, Stacks 1.4 Oper ...

Ten minutes to understand the HashMap source code in depth, after reading you can understand? I think it will take one more minute to master it completely! ____________ Finally came to the more complex HashMap, because of the internal variables, internal classes, methods are more, can not be as flat as ArrayList, so ready to cut in from seve ...

Catalog replace operator 1. Replacement If the expression contains special characters, the Shell will be replaced. For example, using variables in double quotation marks is a kind of substitution, and escape characters are also a kind of substitution.Examples: #!/bin/bash a=10 echo -e "a is $a \n" Output: a is 10 Here - e denotes the substitu ...

For reprinting, please indicate the source: http://blog.csdn.net/chay_chan/article/details/70196478 Introduction to NumberRunning TextView Number Running TextView is a TextView with its own digital scrolling animation. By using setContent(String str) method, the corresponding amount of digital string (such as "1354.00") or digital ...

First look at the results to be achieved:Link AddressThis is the effect of my actual development of a project. Here I just extract the sliding control of the lock screen page. In fact, the other effects of the sliding control are easy. The sliding control is the key point. Dead work Android There are still a lot of knowledge points about the po ...