what is liferay

This is a creation in Article, where the information may have evolved or changed. [Ethereum Smart Contract] (http://upload-images.jianshu.io/upload_images/11831773-b4c4b20efddd1e04.jpg?imageMogr2/auto-orient/strip% 7cimageview2/2/w/1240) Ethereum is a distributed computing platform. It generates an encrypted currency named ether. Programmers can write "smart contracts" on the Ethereum blockchain, and these

What is a project training course, what is the difference with professional courses, and who can study practical training courses? CSTP training products are designed according to the recruitment requirements of software enterprises for software engineers. Through investigation of Representative software enterprises, w

"What is design?" "This metaphysical topic, his thinking in his own words, began to use a designer's" mission "to ask himself. Why did you come to this world? Why do you want to do the design? What do you want to leave for the world? I read the original research "design design", not fashion (in this world, fashion, but always chasing),

What is the role of zookeeper,zookeeper and how does it collaborate with Namenode and Hmaster? In the absence of contact with zookeeper students, may have these questions. Here's a summary for you.first, what is zookeeperZooKeeper, the zoo administrator, is the administrator

If enterprises want to open the road of marketing on the internet, have their own corporate website is the most basic requirements, a series of marketing steps are built on the basis of the site operation, is to achieve transformation of the important way. Of course, the advantages of doing the site there are many, the following public exhibition network for everyone in detail to do the website for the ente

1. What is a pattern? Patterns, that is, pattern. In fact, is to solve a certain type of problem methodology. You have summed up the method of solving some kind of problem to the theoretical height, that is the pattern. The classic definition given by Alexander

Preface--Speaking in frontI think there are a lot of beginners who have seldom been in touch with the background programming language before, like me, the confused of a series of "nouns" in JavaScript. Seems to know what to say, but in fact the understanding is not clear; I think, learning any kind of knowledge, the first should be the most basic explanation of the noun clear (know

First, the understanding of the Module divisionFor a large (here is only a medium-sized system) system, the code is written not a day, the level of detail is not a glance can see clearly.In this case, you need to think well, preferably from top to bottom.The ability to partition the best in a modular way, so that the task can be assigned well during development (

interfaces that do not inherit or implement any other Java framework. Here is a quote from Martin Fowler personal website: "We wondered why people were so against using regular objects on their systems and concluded that it is because simple OB Jects lacked a fancy name. So we gave them one, and it's caught on very nicely. " --martin FowlerWe wondered why people did not like to use ordinary o

What is the function of zoom: 1 in CSS? What is the function of CSS zoom? What is the role of zoom: 1 in CSS:Suggestion: writing code as much as possible can effectively improve learning efficiency and depth.The zoom attribute

Stock entry: What is stock index and what is stock index Stock entry: What is stock index and what is stock index I. Index Definition The s

I/O instead of sequential I/O, which makes accessing index pages slower. So what is the ideal filling factor? It relies on the application's ratio of read and write to SQL Server tables. As a first principle, follow the guidelines below: low-change tables (read-write ratios of 100:1): 100% higher fill factor for changed tables (write over Read): 50-70% fill factor reads and writes in half: 80-90% 's fill f

Just like what is the difference between the following code {code...} and {code? Humbly ask the experts for advice, just like The following code Echo 'configuration error'; exit (3); // Status 3 indicates exit due to configuration error And // Exit directly ('configuration error '); What is the difference? I would lik

Traditional website construction can be said that the internet has just arisen when the product, has been synonymous with the past, now if there are enterprises to choose this kind of traditional construction station services, can only say that business leaders on the internet this piece of attention, or no internet thinking consciousness, even say no sense of crisis, there are sites and no site relationship is not big, Indifferent attitude. Some busi

Insist ~ insist ~ insist ~! Sweet Tooth Like to eat sweets What should we get for dessert? What do we have for dessert? We just finished eating dinner! And you ' re already thinking about dessert!? We've just had dinner, and you've been thinking about dessert? Sorry.i have such a huge sweet tooth! I love dessert. I'm sorr

JQuery1.3.2 source code learning This source code uses the current jQuery 1.3.2 version. download time:. Click here to download A function 1 /*! 2 * jQuery JavaScript Library v1.3.2 3 * http://jquery.com/ 4 * 5 * Copyright (c) 2009 John Resig 6 * Dual licensed under the MIT and GPL licenses. 7 * http://docs.jquery.com/License 8 * 9 * Date: 17:34:21-0500 (Thu, 19 Feb 2009) 10 * Revision: 6246 11 */ 12 (function (){ 4376 })(); If you omit the content in the middle, you can see lines 12th to 4376.

Php is also a bit time-consuming. reading some technical blogs often tells us about lua. under what circumstances will lua be used? Do you need to be skilled in using it? I want to know if phper needs to understand lua. it may take some time to engage in php. I read some technical blogs and often see people talking about lua. under what circumstances will lua be

What is persistent connection and what is short connection?Post a classic post. After reading it, there should be no problem: Diversity of TCP/IP communication program design People who are new to TCP/IP communication design can quickly compile a communication program based on the example.According to this, some peopl

)This is the magic of data structures.So what is an algorithm? This can only be forced to continue the analogy. I want to learn Kung fu. After I entered the book Room of martial Arts cheats, I ran out with a lot of books. Open a look, there is a dragon 18 palm, nine Yin Canon, nine Yang Martial, easy to warp, the unive

What is polymorphism. Concept: The same operation acts on different objects, can have different interpretations, produce different execution results, this is polymorphism. Simply put: the reference to the base class refers to the object of the subclass. Why use polymorphism? Reason: We know that encapsulation can hide implementation details, making code modular,