super why toys

By defining a method or member with static, it provides some convenience for our programming, which in some way can be said to be similar to global and global variables in the C language. But it's not that you can use it anywhere, and if you do, you need to think about whether you're programming with object-oriented thinking and whether your program is object-oriented.Okay, now we're going to talk about the meaning and usage of the two keywords Thissuper.In Java, this usually refers to the curre

Background Java given a specific type parameter a after the generic list, with the given another specific type parameter x of the generic list Super or extends can define a large class of generics as the parent class for generics that give specific type parameters. Super or extends defines a bounded generic that overrides the hierarchical relationship between the decision and the specific p

Transferred from: http://blog.csdn.net/yihuei123/archive/2007/06/04/1637893.aspxBy defining a method or member with static, it provides some convenience for our programming, which in some way can be said to be similar to global and global variables in the C language. But it's not that you can use it anywhere, and if you do, you need to think about whether you're programming with object-oriented thinking and whether your program is object-oriented.Okay, now we're going to talk about the meaning a

Super in 2012 gradually by the media vigorously propaganda, the current super is not what fresh products, including the front computer software and hardware application network also for everyone recommended a lot of the latest release of the super computer and related super This introduction article, for a lot of frien

Introduction-Recent database system principles of the textbook, there are some small knowledge point to see really let people silly, even if the psychology of me, do not know what it said, yesterday group meeting discussion, everyone's understanding also have different, the primary key, candidate key, super key, foreign key these seemingly very small concept, discussed for a whole half hour. Let me tell you about my understanding. --------------------

Java Object-oriented-–super keywords 1: Define father (parent Class) class 1: member variable int x=1;2: Construction method without parameter and argument, with output statement 2: Define son class extends Father class 1: member variable int y=1;2: The construction method is non-parametric and has a parameter. have output statement this.y=y+x; 3: Create son class object Son son=new Son(3); Sy

Like what class Child (Parent): def __init__ (self): Parent . __init__ (self) Reply content:For your question, the answer is yes, and there is no difference. But I don't feel good enough to answer the question. To talk about super, first we should ignore the interference of the name "Super". don't talk about super when you think of the parent

outercls.innercls (); } } Class outercls{ public static Class innercls{ Innercls () { System.out.println ("Innercls"); } } } The output will be as you expect. Innercls Same as the ordinary class. For other uses of internal classes, refer to the relevant chapters in the "I" Java, which are not detailed here. Second, this super In the previous section, we discussed the various uses of static, by defining a method or member with static,

Intel has recently been exerting its power at the channel end, and the computer stores, 3C stores and the manufacturers of the manufacturers have been pushing the pole. However, in the face of "super extreme" this jerky vocabulary, a large number of users do not understand their meaning. Many consumers think "ultra-extreme" means super lightweight and super perfo

When the subclass needs to call the method of the parent class, before python2.2, call the class's method directly with the class name, that is, the non-binding class method, and the self of the object is passed in the argument. Class A (object): def Say (self): print ' I am A ' class B (a): def Say (self): print ' I am B ' A.say ( Self) B = B () B.say () Output I am BI am A This works fine, but there is a problem, when the parent class changed the name, it is necessary to

Think of Python's super () function, pythonsuper Python-super Thought of by the super () function of Python First, let's take a look.super()Function Definition: super([type [,object-or-type]])Return a **proxy object** that delegates method calls to a **parent or sibling** class of type. ReturnsProxy objectThis object

wrong, hehe.Third, in the function, it is necessary to refer to the current object of the class that the letter belongs to, directly with this. In fact, these usage summary is from the "This is a pointer to the object itself" this sentence of a deeper understanding of the word, rote or easy to forget and easy to make mistakes, to understand! second, Super Super key is similar to this, is a masked member va

Super chain: Super Outside the chain is a collection similar to Alexa ranking query, PR query webmaster commonly used to query the site, because these sites are mostly query record display function, and query records can be Baidu, Google, Sogou and other search engines quickly included, so that the formation of the chain. Because this is the normal query generated outside the chain, so this external chain o

I. Why do I need to call "Super viewdidload"-(void) didreceivememorywarning { [Super didreceivememorywarning]; } -(Void) viewdidload { [Super viewdidload]; } In the above Code, what do I need to call the corresponding methods of the parent class? Taking viewdidload as an example, viewdidload in the parent class (Super