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The use of this method in JS is very confusing. Some are like this in Java or C #, but not entirely. According to popular parlance this always points to the object that invokes the method.1, pure function call. function ListCommon2 (x) { This.x=x;alert ("This is ListCommon2" + (this instanceof ListCommon2); Alert (" This.constructor "+this.constructor); } function Test () { //test code var t1=listcommon2 ("boil wate

In an abstract class, the way in which methods are executed is publicly defined, subclasses can be implemented as required, but calls are made in the manner defined in the abstract class, typical applications such as banking processes, and brewing beverage processes. The following is a simple example, with boiling water brewing beverage, divided into four steps: boil, brew beverage, pour the drink into the cup, add seasoning.1. Template abstract class

What's a hibernate thing? Simply put, is someone else to write a good set of access to the database, the bottom is actually jdbc. Using JDBC like no rice cooker before, we have to ourselves according to experience, how many people boil how many meters, put how much water, with how much fire, boil how long, the whole process need to control themselves, if the control is not good, luck just boiled rice into p

The use of this in JS is confusing, some like this in Java or C #, but not exactly the same. According to popular parlance this always points to the object that invokes the method.1, pure function call. function ListCommon2 (x) { This.x=x;alert ("This is ListCommon2" + (this instanceof ListCommon2); Alert (" This.constructor "+this.constructor); } function Test () { //test code var t1=listcommon2 ("boil water"); v

objects, after the call to wait () This thread releases all of the synchronization resources it holds, not the object that is called the Wait () method. The wait () method can also be generated by other objects calling the interrupt () method during the wait process.ThreeThere is an essential difference between the two of the perpetrators.Sleep () is a time when a thread is paused for a period, and its control is determined by the current thread, that is, in the threads. Well, for example, what

synchronization lock on one or some of the objects, after the call to wait () This thread releases all of the synchronization resources it holds, not the object that is called the Wait () method. The wait () method can also be generated by other objects calling the interrupt () method during the wait process.ThreeThere is an essential difference between the two of the perpetrators.Sleep () is a time when a thread is paused for a period, and its control is determined by the current thread, that

What is a template method pattern?Defining the skeleton of an algorithm in an operation, and deferring these steps into subclasses, the template method allows subclasses to redefine some specific steps of the algorithm without altering the structure of an algorithm.Good abstract concept Ah, genteel things are not pleasing, below I use a common example of life to illustrate itis a drink machine, everyone is very familiar with it, the major shopping malls everywhere a thing, here for example, for

, if this classic and simple algorithm you will not, and other control class algorithm estimate you will not. May let you do a product or participate in certain control competitions, obviously, do not PID these algorithms, you can only do simple logic control, and logic control is too simple, a few if () sentence judgment is clearly not satisfied with the needs of the control class design. In addition, many do not need PID algorithm design can also be added to the PID algorithm, which can make y

future study and use of these concepts.Second, let's take a good understanding of the three concepts of concurrency, synchronization, and AsynchronyThe title of the three concepts in the field of web development is too common, even if the introduction of web development of children's shoes to find the web development of the book can be found in this three concepts, but if you do not understand the three concepts thoroughly, if in the actual development of the three concepts of the intertwined p

I. Definition Template method is based on the design pattern of inheritance, which can improve the scalability of the system. Abstract parent class, subclass in JavaThe template method has two parts structure, the first part is abstract parent class, the second part is the concrete implementation subclass. Second, the example Coffee or tea(1) Boil the water(2) soaking tea with boiling water(3) Pour the tea into the cup(4) Add lemon /* Abstra

determined by the current thread, that is, within a thread. Well, for example, the thing I'm going to do is "ignition-> boil water->", and when I finish the fire I don't boil the water immediately, I'll take a break for a while before I burn. The initiative for the operation is controlled by my process.and wait (), first of all, this is called by a certain object to interpret this object as a messenger, wh

, until the program runs out, if the middle of a more time-consuming operation, it can only wait. Single-threaded design makes language execution inefficient, in order to take advantage of the performance of multi-core CPUs, the JavaScript language supports asynchronous code, and when there is a more time-consuming operation, the task can be written as asynchronous execution, when an asynchronous task is not finished, the main thread will suspend the asynchronous task, Continue with the subseque

largest zongzi (normal consumption): meat dumplings produced in Nanning, Guangxi, each weighing about two kg, to fat pork, mung bean as filling, fragrance, soft waxy, pleasant embellish, Gao Yu not greasy.the largest zongzi (Guinness record):During the 2000 Nanning International Folk Song Arts Festival, Guangxi (nanning) Tourist food festival, Nanning Ming Yuan Xindu hotel chef cooked a giant dumpling, long 3 meters, 2.1 meters wide, 1.2 meters high, cooked up to more than 2000 kilograms, broke

place or ignite it. Then, we can do other things. For example, we can do a series of things, such as sweeping the floor or washing the clothes. In this way, the same thing is done, but the time it takes is different. If you use this method later, the time may be shorter and the efficiency will be higher. You can use the aforementioned synchronous method to achieve lower efficiency. In the future, we will call it an asynchronous operation. Events and callbacks If you use an Asynchronous Method t

objects, after the call to wait () This thread releases all of the synchronization resources it holds, not the object that is called the Wait () method. The wait () method can also be generated by other objects calling the interrupt () method during the wait process.ThreeThere is an essential difference between the two of the perpetrators.Sleep () is a time when a thread is paused for a period, and its control is determined by the current thread, that is, in the threads. Well, for example, what

————————————————————————————————————————— the actual difference between the two is that sleep () is to let a thread pause for a period of time, and its control is determined by the current thread, that is, within the threads. Well, for example, What I'm going to do is "ignition, boil, boil noodles", and when I finish the fire I do not immediately boil water, I ha

Original: http://blog.sina.com.cn/s/blog_512e1cdc01017u3b.htmlNow the distance between the college entrance examination is more and more close, the students feel that time is more and more inadequate, a lot of trivial time is also arranged full, here I particularly remind everyone to note: In order to use the trivial time and disturbing attention, is a very good thing.When I was in junior high school, I learned an "overall method", he raised a morning to do things in the order of the example, th

January 19, dressed as "white Snake Biography" in "White Snake" (middle) of the actors in Nanjing Xuanzang Temple "Laba Festival goods Laba Porridge" activities for the public Sheng Porridge. [Caption Id= "attachment_45" align= "AlignCenter" width= "432"] "White Snake" donation laba porridge (PHOTOS) [/caption] is the traditional Chinese Laba festival, Nanjing Xuanzang Temple Boil The salt, sweet two flavors of the tens of thousands of laba porridge,

dishes for you to boil the soup you love, waiting for you to go home. Love you!16. Send you a bouquet of roses, and rely on it. Send you a peach blossom, the luck all depend on it. Send you a tie of white, hundred good and count on it. Give you a bowl of tofu to eat after the laugh haha. Happy 38 knots.17. My heart to you is like a star in the sky. Will never change. You are the only person in the world who can give me happiness.18. Wife, you have a

syrup is our common people to treat colds and cold the most commonly used prescription, if you are not careful with the cold, rain, back home immediately drink a bowl of hot ginger syrup, the whole body slightly sweat out, that feel comfortable. It can be said that ginger syrup is a must for our home life, but also health care and the rehabilitation of major diseases. In general, both adults and children, as well as mild illness, can take ginger syrup. Therefore, it is necessary for each of us