Design Pattern Observer

Mobile phone circle has gradually entered a new product-intensive release period. In addition to the traditional mobile phone manufacturers push new products outside the industry companies are scrambling to squeeze in the fun. March 30, two internet companies also announced their mobile phone strategy progress, of which 360 mobile phone official community and the Android version of 360 mobile phone official community applications launched, and le-Vision announced that the new products will be released in April, the industry speculation will be a long rumored video phone. Even the gree, which has always been regarded as a traditional household appliance manufacturer, suddenly flashed a gree mobile phone. For these new entrants into the industry's so-called internet phone ...

1. Definitions of some conceptual patterns: Each pattern describes a problem that continues to occur in our environment, and then describes the core of the solution to the problem. In this way, you can use the existing solutions countless times without having to repeat the same work. What is a design pattern? A design pattern is a typical, generic solution to a problem in a particular situation. We need to properly understand and learn some design patterns, in the process of development, will always involve some framework design, module design and other things, if you can understand and transport ...

Uidesigner is the Tencent user research and experience Design Department (CDC) design of a design software, to create a unified platform for designers and team collaboration platform design tools, after 1.0 and 2.0 version of the experience of precipitation, we decided to 3.0 version of the new architecture design. The development of a software system, the early stage of the architecture design bearing the entire software design ideas and key decisions, can be said to be the most important. According to software architecture design ideas, focus on segmentation and interaction, good architecture must make each of the concerns separated from each other. We have the most basic need ...

Http://www.aliyun.com/zixun/aggregation/13713.html ">hbase coprocessor is one of the great expectations that many people have for hbase-0.92. It enables off-line analysis and online applications to be well integrated, and also greatly expands the application richness of hbase and is no longer a simple K class application. The design of HBase coprocessor from hbase-2000 and HBase-...

Pay the market to reproduce the flat thunder. The eight third-party payers who have been waiting for the central bank to reopen new merchant businesses are waiting 5 months for a new ticket. On the afternoon of September 10, the central bank formally targeted the bank card pre-authorization risk incident issued at the beginning of the year for the remittance of the world, Fuyou, Yeepay, accompanied by four third-party payment agencies to pay the punishment opinions. According to the final penalty result, remit the world within one year will be orderly exit 15 provinces and cities of the existing receipts business, Fuyou and Yi Bao will evacuate 7 provinces of receipt business, accompanying will evacuate 5 provinces 2 city receipts business. April 1, eight first ...

I believe many people have been puzzled by C # delegates and events, especially in C # beginners, it will feel more difficult to learn this part, very likely to give up, and. 　　NET for delegates and events encapsulation is very good, generally not how to use custom delegates and events, so give up learning the technology has an excuse! There are a number of such articles on the web, most representative of Zhang Ziyang's C # delegates and events this article, the writing is very good, received a lot of readers praise, but I read the comments, or found some problems, because there are many readers are read over and over, each feeling is quite ...

class= "Post_content" itemprop= "Articlebody" > Gossip: People's psychology in varying degrees of change, the desire to start randomly. The psychological test proves that the following pictures are related to each person's psychological endurance, the stronger your psychological endurance, the slower the picture rotation. The United States used this as a psychological test of the suspect, he saw the picture is high-speed rotation, and most of the elderly and children see that this picture is still. Please big ...

Remote invocation is the communication mechanism between system and process, and is the core technology of distributed system development. Remote invocation technology can form a group of computer systems into a network system, the external provision of the overall service, then this group of computer systems constitute a larger, more performance of the computer system. A general statement on the architecture design of the remote invocation service first, we need to understand the following questions: Why is a remote invocation service required in an application software service? What is the problem with the remote Invoke service that solves the software design? I have written an article on the design of distributed Web site architecture, ...

Prior to the report: Electric dealers Fire Suning gome or step Kodak Lucky in the past half a year after the electric business site is called "Big Battle", Jingdong Mall CEO Liu suddenly targeted at the traditional stores gome and suning. With the night before the Suning appliance (002024, shares bar) issued a notice, intended for the public to issue a scale of not more than 8 billion yuan of corporate bonds, yesterday morning, Liu announced in micro-Bo, Beijing East Everyone electricity three years 0 gross margin, and from today onwards, all of us electricity will be more than Gome, suning chain cheap at least 1 ...

Zhang Guoqing hurried into the interview room, change the gap, he walked along the way with the Chinese Fashion Designers Association secretary General Zhangqinghui Chat, the topic involves fashion, France, design ... It all sounds as if he is the CEO of Dangdang. He was even very much in line with the fashion photographer's posture requirements, a set of films filmed, for 6 or 7 sets of clothes, he was not impatient. Privately, he would say that's his job, after all, when it's no longer the book-selling site. The latest two quarterly earnings show that apparel category transactions have exceeded the entire platform of 50%, and to sell clothing ...