how to implement gamification

to implement collection functionality under the Collections namespace, and provides developers with flexible selectivity depending on the application environment: such as extensive ArrayList and StringCollection via index access ; a first-in, first-out, first out stack that is typically released after retrieval; access to its elements through element keys Hashtable, SortedList, ListDictionary, and StringDictionary NameObjectCollectionBase and NameVal

The observer model is one of the more commonly used patterns and the basis for other common patterns, such as the MVC pattern, which is a model based on observer mode. In the Java language, the implementation of observer mode is very simple, that is, let the observer inherit the observable class, and let the observer implement the Observer interface. These basics are used in my words--"mantis, Siskin--from an idiom to the Observer model," which is no

that implement the set function in the collections namespace, and provides developers with flexible and diverse options based on the applicable environment: for example, accessing a wide range of arraylist and stringcollection through indexes; usually, the first-in-first-out queue and the second-in-first-out Stack are released after retrieval. The elements are accessed through the element key hashtable, sortedlist, listdictionary, and stringdictionar

There are already several articles for IEnumerable, this article describes how to use IEnumerable to implement ETL. ETL, an abbreviation of English extract-transform-load, is used to describe the process of extracting data from the source (Extract), transpose (Transform), loading (load) to the destination. Typically, the data collected from the original end has many problems, and the business requirements may not match the data format, so the ETL proc

clean code that allows developers to write style code that fits the shell script. Python is an interpretive language, which means that there is no need to compile. This makes Python the ideal scripting language. Python also reads, interprets, and outputs a looping style that allows developers to quickly try new code through the interpreter. Developers can implement some of their ideas without having to rewrite the entire program. Python is a fu

Today's main explanation is to use a variety of ways to implement traversal hashmap to remove key and value, first in Java if you want a collection to be able to use for enhancements to implement the iteration, then this interface or class must implement the Iterable interface, So iterable is how to achieve the iteration, here will not do the explanation, the fol

The interview in these days, I feel that the whole grasp of spring is still very weak. So we need to continue to strengthen.Here to explain the spring of these several aspects of the test, but the actual feeling is still wrong, this problem I think the need to really read the spring source code to say something to make sense. This kind of interview asks the law, also only is the interview the question law, to the actual grasp still has no slightest meaning. So I think there is a chance to read t

I. Problem INTRODUCTIONSpeaking of these two methods have to say multi-threading, talking about multithreading will have to implement multithreading two ways to inherit the thread class and implement the Runable interface, the following first look at the difference between the two ways.Two. Two ways to implement multithreading in Java1. Inheriting the thread clas

. Implementing Comet-style WEB applications, while ensuring scalability on browsers and servers, is only possible in recent years. Later in this article, we'll look at how some popular Java WEB servers support Scalable Comet architectures, but first let's see why we're creating Comet applications and the common design patterns that we use to implement them. motives for using CometThere is no doubt about the success of the HTTP protocol. It is the basi

Paip. PHP-ASP-JSP implementation of event mechanism WebForm-type development Objective... 1 Code behind codes separation ... 1 Page control ... 1 Implement a form ... 2 Implementation status ViewState Save ... 2 Page_ini events and Page_Load events ... 3 Implement Button1_Click Events ... 4 Implement Button2_Click Events ... 4 Note: WebForm. codefile.php Source

Objective C # principle 26: Use icomparable and icomparer to implement the sequential relationship between objects Item 26: Implement ordering relations with icomparable and icomparer Your type should have an ordered relationship to describe how they are stored and sorted in the collection .. The Net Framework provides two interfaces for you to describe the ordered relationship of objects: icomparable a

　　I have been busy recently. I have a lot of things, I have to live a lot, and I have to pay a lower salary. There is no time to read books. I will move some of my previous technical blogs here. NTLM studied for a while at the end of last year and at the beginning of this year.Example program. It involves many algorithms and has been checked online for a long time. (Below is the previous blog) recently I want to implement a network programming program

Implement variable-length array in C ++1. variable-length one-dimensional arrayThe variable-length array is an array that cannot determine the length of the array during compilation and the program needs to dynamically allocate memory space during runtime. The simplest way to implement a variable-length array is a variable-length one-dimensional array. You can do this:// File name: array01.cpp# Include Usin

There are three kinds:(1) Inheriting the thread class, overriding the Run functionCreate:[Java] View plain copypublic void Run () {Thread.Sleep (1000)//thread sleeps for 1000 milliseconds, sleep causes the thread to enter the block state, and frees the resource}}To open a thread:Object. Start ()//start thread, run function(2) Implementing the Runnable interface, overriding the Run functionTo open a thread:[Java] View plain copyT.start () (3) Implement

() {Settitle ("Java GUI Event Listener Processing"); SetBounds (100, 100, 500, 350); SetLayout (NewFlowLayout ()); Btblue=NewJButton ("Blue"); Btdialog=NewJButton ("Pop window"); //adding Event listener objects (object oriented thinking)Btblue.addactionlistener (NewColoreventlistener ()); Btdialog.addactionlistener (NewDialogeventlistener ()); Add (Btblue); Add (Btdialog); SetVisible (true); Setdefaultcloseoperation (Jframe.exit_on_close); } //internal class Coloreventlisten

about how to write a misc device, in the previous article has introduced the approximate process, now let us implement a simplest Misc device driver. http://blog.csdn.net/morixinguan/article/details/52700146The following four articles about the preceding character device can be used as a reference:http://blog.csdn.net/morixinguan/article/details/55002774http://blog.csdn.net/morixinguan/article/details/55003176http://blog.csdn.net/morixinguan/article/d

In daily life, we know that search engines such as Baidu, 360, Sogou, Google, and so on, search is the big data in the field of common needs. Splunk and elk are leaders in the field of non-open source and open source, respectively. This article uses very few Python code to implement a basic data search function, trying to get everyone to understand the basic principle of big data search.Bron Filter (Bloomfilter)The first step is to

you create a Intent, this Intent is called the display Intent. For explicit intent, because he has indicated the specific class to invoke, Android ignores its action,category and the Data property. (Personally feel that the display of intent calls is faster than implicit) Serializable vs ParcelableAndroid is mainly through the intent to achieve mutual invocation between components, but also to pass additional data. This data is primarily stored in Bundle (when Intent.putextras (Bundle) is inv

structure diagram of the components and EIS integration applications with JCA.As you can see from Figure 1, if you need to integrate a Java-based application with an existing EIS, all you have to do is install the appropriate EIS connector (a resource adapter that adheres to the JCA specification, or Resource-adapter) to the application server. Once this adapter is installed, we can develop the Java EE component to use the CCI (Common client Interface, generic client interface) API with the EIS

Standard This article explains how you can write your own resource management code when you build a type that contains resources other than memory, especially when you are dealing with a non-memory resource. We already know the importance of disposing of objects that occupy unmanaged (unmanaged) resources and should now write resource management code to dispose of those types that contain non-memory resources. Whole. NET Framework components use a standard pattern to handle non-memory resources.