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One.And then demonstrate a simple method. Now there is a need, name, other not. Some people say that it is OK to get getvalue directly. But there are more values here.Value is values, S is a lot. Why isn't the set returned here? The keys are unique, and the values are not necessarily unique, so take a look at the faces here.It is more convenient, but the return is not set, but collection.Java-preliminary Understanding-Common Object API (Collection

double-row collection. Print the collection and get the keys and values. Connect with an equal sign, indicating that it has a relationship.For the result of the above operation, there are a few comments, the same key, the value will be overwritten.Next, store a few more. The output display is unordered. Do not mean that 2,7,8 is orderly, hashmap is also a hash table, the integer method and the hash table is the same way.the next demonstration is the Delete method, in the Map collection, the cor

different sets of elements of the operation of the same type, increase, delete, check ...In this example, there are two ways to take an element, either keyset, or .... Show keyset first.The set set contains the key type,In fact, the way of writing here is very strange, from the distance, lisi,38 and Beijing three attributes in the collection, the writing method is rather strange, did not read.The hash is unordered and the output is unordered.Now modify the program, for Zhaoliu This object, modi

about collections, classifying them is easier to learn.If the map collection has a method to add, does it receive several parameters? Two parameters are received and V is returned.In the return interpretation, K1 and V1 are key pairs that are stored in. If you save K1 and V2 again, the key is the same, and the new value replaces the old value, and the old value is returned. When storing K1 and V1, what is returned? There is no previous value, which is null. Added to the end, especially simple.H

classes, in which style_fields = {' Field ': ' Ueditor '} and then adding the Modeladmin class to the corresponding registration object, you can use the Rich Text editor when you edit the field in xadmin background. To get back to the point, Djangoueditor also needs to define the required field in model as Ueditorfield, which inherits from TextField, which has the upload path configuration for pictures and attachments, but does not give the upload path configuration of the video directly, Then

the Michael2, the idea refinement1, model design employing words is that each command of a use case contains content that is abstracted as a Java model2, use case Source selection execl, XML and other use case source is described here using execlIt's enough for you to implement the first step.1, used selinum should know selinum each Findelement method return for Webelement Webelement can continue to find elementsWe can not cut off this function, chain search is very common. We look at the Webel

("%y-%m-%d%h_%m_%s", Time.localtime (time.time ())) -filename ="d:\\myapi_test2\\report\\"+now+'result.html' #defines a report storage path that supports relative paths. $fp = open (filename,'WB') $Runner = Htmltestrunner.htmltestrunner (stream=fp, title='Automated test reports', description='XX Platform V1.0') - Runner.run (suit) - #Unittest.main ()Period Thanks @ Big Bro @ Three seniors @ Rice Brother @ brother's GuideI qq:915069792Why choose?Some people like to create the world, they do

hierarchy . Collection represents a set of objects, also known as Collection elements . Some collection allow duplicate elements, while others do not. Some of the collection are orderly, while others are unordered. The JDK does not provide any direct implementation of this interface: it provides more specific sub-interfaces (such as Set and List) implementations. This interface is often used to pass collection and operate these collection where it is required to be the most universal.Collection

One.What is a generic interface? The previous example created so many classes that it was cumbersome.The first thing to understand is that the interface is an abstract class, and after the declaration, the following class is implemented. The methods in the interface are the classes that are implemented. This combines the interfaces with generics. In the preceding chapters, you combine generics with classes, methods.A generic definition on a class is a generic class that is defined on an interfac

that are most clearly set. Can get the length of the method, no outside length and size. If size is 0, there is no element. The IsEmpty method is true,size if there are elements, the IsEmpty is false. The collection is judged by size, but encapsulated as a isempty. The iterator method that gets the binding element is the iterator. An iterator is a method that is specifically used to remove elements from the collection.The return value of the iterator is very special, not the element being fetc

-defined tool class, the previous example can be used in a different way.The late 1.6 release also provides a number of new methods in the Linklist linked list structure. As shown in.The functions of these methods and the existing methods are the same, but there are some differences, the upgrade is for a reason.The difference needs to know which method is clearly used when developing.GetFirst method has a feature, if there is nothing in the list, call the method, there is no thing. It throws an

business, the message is specific error information "Details": "..." The Abp.message.error function is invoked by default when an exception occurs, and you can modify it in Abp.jquery.js to handle the error message uniformly. }, "Unauthorizedrequest": false } Dynamic Webapi (active Web API Layer) The WEBAPI call function is dynamically generated here based on services: Usually we use Ajax to do a simple e