qlikview design best practices

need your backend to do the simpler the more compact the better. 9. Homepage SummaryEnrich web Snippets displayed in Search Results Page . When you search for a relevant information, you will find the content of the site, articles, introductions and other information, these are search engine production. It will increase your chances of being searched.About SEO, SEO and website design is always an incomplete topic. Today we are just a little brief int

Tags: tinyint1 mysql bool mysql boolean mysql integer storage mysql unsignedMySQL various INTEGER types occupy storage space, value range listBest practices UNSIGNED can only store non-negative integers Signed can store positive integers, 0, negative integers The best practice for storing always positive integers, such as primary keys, is UNSIGNED, because it takes up as much storage space as signed, but with a value range of more than one

Analysis of Android source code design patterns and practices (15th)Chapter 2 template method mode The template method pattern is the simplest behavioral design pattern, one of the most common patterns in all patterns, and is the basic technology based on inherited code reuse. In its structure, only the inheritance relationship between the parent class and the

DB: 20 database design best practices Code Use clear and uniform labels and column names, such as school, schoolcourse, and courceid. The data table name uses a singular number instead of a plural number, for example, studentcourse, instead of studentcourses. Do not use spaces for data table names. Do not use unnecessary prefixes or suffixes for data table names, such as using school instead of tbls

I. Mobile First　　Mobile phone design is usually more minimalist, from the mobile phone design to start making a simple version, with the introduction of tablet and desktop, the page slowly complex, this is an incremental process, the initial focus on the core module, the default open simple phone style, and the responsible style wrapped in media query, so will not load, So the access speed is the best　. Con

executed, which can also be done with a history list stack. Logging command logs and then repeating them is a good way to reverse an irreversible command.Command queueMacro command:A macro command is a collection of commands that can execute a batch of commands at a time by executing a macro command. varClosedoorcommand ={execute:function() {Console.log (Closed); } }; varOpenpccommand ={execute:function() {Console.log (' Turn on the computer '); } }; varOpenqqcommand ={execute:fu

object in an interface, can execute different objects method, equal to the director said a boot, the rest of the people can do their own thing.Here we assume that the object has an Execute method, if the object does not have a common method, it can also add one to the object, if the object is created by new way on the prototype chain, if not through new, directly add1 //The New Way2Menubar=NewMenubar ();3Menubar.prototype.execute=function(){4 This. Refresh (); The methods that really need

the Addevent function is entered:1 varAddevent =function(Elem, type, handler) {2 if(window.addeventlistener) {3Addevent =function(Elem, type, handler) {//the difference between this and the previous scenario is that it rewrites itself.4Elem.addeventlistener (type, Handler,false );5 }6}Else if(window.attachevent) {7Addevent =function(Elem, type, handler) {8Elem.attachevent (' on ' +type, handler);9 }Ten } OneAddevent (Elem, type, handler);//This will only be performed the

the adorner mode is intended to add functionality to the Object. The decorator pattern often forms a long decorative chain, while the adapter pattern is usually packaged only once. The proxy mode is to control access to objects and is usually wrapped only once. The function of the appearance mode is similar to the adapter, Some people regard the appearance pattern as the adapter of a set of objects, but the most notable feature of the appearance mode is the definition of a new interface.

Analysis of Android source code design patterns and practices (23rd)Chapter 2 appearance Mode The appearance mode is one of the structural design modes. It is frequently used in development and is a common method for encapsulating APIs. Third-party sdks we often use are basically used in the appearance mode, which can shield users from many implementation detai

The original idea is to teach you how to use AgileEAS step by step. NET base library for application development-articles related to the series of directories to gradually explain Based on AgileEAS. NET platform for application development, but in the case of the process, we have to talk about AgileEAS. in terms of Architecture Design for application development on the NET platform, I will separate some articles related to the architecture. I am based

Analysis of Android source code design patterns and practices (19th)Chapter 2 combination mode The combination mode is also called the partial-overall mode, one of the structural design modes. 1. Definition Combine objects into a tree structure to represent the "part-whole" hierarchy, so that users can use a single object and a combination object in a consisten

Quotation marks are used as extracts of accent text. Because we need to provide some important flags to use the user's attention to the most important part of the article, although they never read it. In addition, quotes are always used in thank-you notes and sometimes in blog comments, and they may be styled with graphics, CSS, and a bit of JavaScript. Sometimes, creative dynamic solutions can also be applied well. This post includes creative examples and best

Use Axure RP prototype design practices 04 to understand global variables and axurerp A variable is a variable number and can be considered as a data container. A variable has two operations: read and write. Axure's global variable refers to the ability to read and write this variable at any time. Click Global Variables under Project in the toolbar. You can set Global Variables here. You can see t

In web development, because differences between browsers are implemented differently, some sniffing work is unavoidable, such as the fact that we need to be able to use the universal event binding function in each browser addevent//General Wording//Cons: Every time he is called, it executes the IF condition,varAddevent =function(Elem, type, handler) {if(window.addeventlister) {returnElem.addeventlistener (type, Handler,false); } if(window.attachevent) {returnElem.attachevent (' on ' +type, ha

Analysis of Android source code design patterns and practices (10)Chapter 10 interpreter Mode The interpreter mode is a relatively small behavior mode, which provides a syntax or expression method for interpreting languages. However, it is widely used, but it is rarely used because we seldom construct the grammar of a language. 1. Definition Given a language, it defines a syntax expression and an interpre

[teamcolor]| | [];//all members of the team for(vari=teamplayers.length-1;i>=0;i--){ if(teamplayers[i]===player{Teamplayers.splice (i,1); } } }; //Players Change Teamoperations.changeteam=function(Player,newteamcolor) {operations.removeplayer (player); Player.teamcolor=Newteamcolor; Operations.addplayer (player); } //player DeathOperations.playerdead=function(player) {varTeamcolor=Player.teamcolor, Teamplayers=Players[teamcolor]; varAll_dead=true; f

your program.3. When the const and NON-CONST member functions have a substantially equivalent implementation, making the NON-CONST version call the const version avoids code duplication . Article 01: Treat C + + as a language federalWater and electricityArticle 01: Treat C + + as a language federalWater and electricityArticle 01: Treat C + + as a language federalWater and electricityArticle 01: Treat C + + as a language federalWater and electricityArticle 01: Treat C + + as a language federalWa