UI design specifications and production specifications for adaptive resolution
Benchmark Device: iphone 4s
Benchmark screen resolution: 960*640 (iOS), 800*480 (Android), 854*480 (Android)
Reference parameter 3.5inc + 330ppi
Standard Height: 768
1.333 (4:3), 1.8 (16:9)
UI Height = 768
Design size= 1024/768
Phone Resource Size = 1024/768
HD Resource Size = 2048/1536
In this case, the most important is the pi
Traffic light and design specifications, traffic light design specifications
When crossing the road, I suddenly noticed the traffic lights, and the recent new traffic rules were also in full swing, So I thought about the "design specifications.
When it comes to design specifications, many people think it is a very virt
What are the content of PHP's series of SRS, and what are the phppsr specifications. In PHP, what are the content of the series of SRS, and what are the descriptions of the phppsr specifications? this is short for PHPStandardRecommendation. it should actually be called PSRs, which is the series of recommendation standards: currently, the accepted specifications i
Item M14: Careful use of exception specifications (Exception specifications)There is no doubt that exception specifications are a compelling feature. It makes the code easier to understand because it clearly describes what kind of exceptions a function can throw. But it's not just an interesting comment. The compiler can sometimes detect inconsistencies in the ex
[Mysql] database usage specifications, mysql database specificationsI. MySQL Problems
The optimizer does not support complex SQL statements.
Poor Support for SQL standards
The large-scale cluster solution is not mature, mainly refers to Middleware
ID generator, global auto-increment ID
Asynchronous logical replication, data security issues
Online DDL
Incomplete HA solution
The backup and recovery solutions are still complex and dependent on e
Code design specifications and java code design specifications
Code Generation design specifications
I. annotation specifications
1. user-created code file comments
For self-created code files (such as functions and scripts), write the following comments at the beginning of the file:
/**********************************
JAVA code development specifications and java code specifications
I. Development Tool specifications:
1. the development tool is determined after debugging by the project owner.2. Once the development tool is determined, it is not allowed to integrate any non-uniform plug-ins. If necessary, it should be added to the project team members with the consent of the pr
NET Design Specifications Chapter 1 framework design basis and framework structure specificationsNET Design Specifications Chapter 1 Framework Design Basis
A powerful and easy-to-use framework should be designed.
Developers should understand and design frameworks for them.
Understand various programming languages and design frameworks for them.
Make sure that the API design
Jquery code specifications make the Code look better and better. jquery code specifications
After learning jQuery recently, I feel that jQuery is really good. As he said, I should do less! It feels good to start. However, if you write too much, you will find that this code line can be written so long. And the readability is not good. I am lucky to have bought a book named jQuery. I just sorted it out. In pr
Web Front-end development specifications and Web development specifications
I. Purpose of frontend development specifications
This document is specially formulated to improve team collaboration efficiency, facilitate background staff to add functions, optimize and maintain the front-end, and output high-quality documents. once confirmed, front-end developers must
In what we did in Google, another system that made me feel exceptionally valid and useful isStrictEncoding specification.
Before I started working at Google, I always thought that coding standards were useless. I firmly believe that these specifications are the waste of programming time and affect people's development efficiency under the bureaucratic system.
I am wrong.
In Google, I can viewAnyCode, enter all Google Code libraries, and I have the
Technical Summary-android (III)-code specifications and coding specifications-android --Naming rule variable name: 1) try to get a meaningful name. For example, the member variable of a user name should be written as username, rather than just a string. 2) if it is a constant, this value will not change during the encoding process. It should be written as an upper-case name, such as USER_AGE or User_Age, if
As the question, I am engaged in a little mixed, who can be careful to talk about: 1, composer psr-0 and psr-4 In the difference; 2, psr-0 specifications and psr-4 specifications of the difference; 3. composer and php-fig. For example, I am a bit confused. Who can tell me carefully:
1. The difference between psr-0 and psr-4 in composer;
2. Differences between psr-0 sp
Best 11 PHP programming specifications and 11PHP programming specifications
Personal Original Web site: http://www.phpthinking.com/archives/375
PHP has been widely used to develop Web-based applications since its design. Because PHP is a scripting language, some rules must be followed during development.
This article will discuss common good code habits, or code specifi
10. coding specifications
"The encoding style should be as reasonable and concise as possible"
10.1. Writing Style
√ RequirementsThe Writing Style of the class is as follows:
// Single inheritance, written as one line
Classs classname: Public baseclassname // multi-inheritance, written as multi-row classs classname: Public baseclassname1, public baseclassname2 {public: //////////////////////////////////////// //////////////////////////////////////// /
MySQL database design specifications and mysql design specificationsReprinted by songdeyouxiang
1. Database naming rulesIt consists of 26 English letters (case sensitive) and 0-9 Natural Numbers (not frequently needed) with an underscore;The name must be concise and clear (the name cannot exceed 30 characters );For example, user, stat, log, or wifi_user, wifi_stat, or wifi_log can be used to add a prefix to the database;Unless it is a backup database,
Different css bem specifications and cssbem specificationsIntroduction
Since its birth, humans have been constantly solving problems, whether by cutting wood for fire or making weapons.
Therefore, human progress is a process of constantly solving problems.BEM Introduction Background
Because the business logic of the project has undergone major changes, the previous development cycle in the first half of the year has basically become useless. However,
definitions of these scripts comply with AMD (Asynchronous Module Definition, Asynchronous Module Definition) specifications.Compared with AMD specifications, CommonJS specifications are much larger. This can be seen from its slogans. Compared with jquery's write less, do more, and Commonjs, the slogans seem more ambitious, javascript: not just for browsers any more !, It has a great significance to su
HTML5 coding specifications and html5 coding specifications
When writing HTML, there may be some aspects that are not standardized. After studying the HTML5 coding specification, we will use code annotations to sort out relevant information for future review.
1
. NET Design Specifications chapter 7th: exceptions,. net Design SpecificationsChapter 4: Exceptions
Exceptions are well integrated with various object-oriented languages.
Exceptions enhance API consistency.
When an error is reported using the return value, the error handling code is always close to the code that may cause the error.
It is easier to implement code-based error handling.
Error Codes are easy to ignore and often ignored.
An exception can
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