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= 0; } Test (); alert (x); 0 Scenario Two: Invocation as an object methodA function can also act as a method call to an object, at which point this is the ancestor object. function Test () { alert (this.x); } var o = {}; o.x = 1; O.M = test; O.M (); 1 Scenario three is called as a constructor functionThe so-called constructor is to generate a new object by this function (object). At this point, this is the new object. function Test

. NET Framework | notes | procedure | Design 13th Zhang Yi type and bit mark One, enum type 1, the use of enumerated types of reasons: L enumeration type is to make the program easier to write, read, maintain, in the code in the use of symbolic names to replace the number is a consistent idea of programming. L strongly typed, easy to type test 2, Attention matters: L Enum type inherits from System.enum,system.enum and inherits from System.valurt

height of the iphone4s screen is 480, when the screen size is greater than iPhone4, Autosizescalex and Autosizescaley are the aspect ratios of the current screen and iPhone5 dimensions. Like whatIf it is 5,autosizescalex=1,autosizescaley=1;If it is 6,autosizescalex=1.171875,autosizescaley=1.17429577;If it is 6plus,autosizescalex=1.29375,autosizescaley=1.2957;Now that we have the proportional relationship, let's take a look at how to solve the code-setting interface compatibility.CGRectMake (CGF

performance. If the speed is not fast enough, Python will need an external force: analyze and run outside code. We'll cover this in part two of this article.www.qytang.com/http://www.qytang.com/cn/list/29/http://www.qytang.com/cn/list/28/358.htmhttp://www.qytang.com/cn/list/41/http://www.qytang.com/cn/list/37/http://www.qytang.com/cn/list/46/http://www.qytang.com/cn/page/19.htmhttp://www.qytang.com/cn/list/32/http://www.qytang.com/cn/list/28/http://www.qytang.com/cn/list/25/http://www.qytang.co

When crawling site content, the most common problem is: the site has limited IP, there will be anti-grab function, the best way is IP rotation crawl (plus agent)Here's how scrapy Configure the agent for crawling1. Create a new "middlewares.py" under the Scrapy project 1234567891011121314 #Importingbase64librarybecausewe‘llneeditONLYincaseiftheproxywearegoingtouserequiresauthentication importbase64 #Startyourmiddlewareclass classProxyMiddleware(object): #overwriteprocessrequest d

30th use enum instead of intIn all, there are several advantages to using enum1. Compile-time type safety,2. Can be guaranteed to be the value of their own definition, there is no monthly risk,3. Each enum type has its own namespace4. Enumeration can add arbitrary methods and fields5. The enumeration type is final and cannot be instantiated, that is, the instance is controllable.31st Replace ordinal with instance fieldThat is, do not rely on enumerations to specify their values in order to defin

, admin, 22, password, 24,25% 20 from % 20BJX_admin % 20 where % 201 = 1In fact, this system is really speechless. It is similar to the BOBO online store system I analyzed earlier, so the vulnerability is similar to that of BOBO. Here I only provide one injection vulnerability, I really don't know what people think now. Can I make money with other people's programs? Despise people who steal others' source code and sell money! (This is not to say that the program was copied by the author, and I t

) 5. Return Data IntroductionInterface Network SERVICE WEBAPI WebService Network APINsurlconnection: ObsoleteNsurlsession: Objects for network sessionsNsurlsession is divided into three tasks: 1 Data Task 2 download Task 3 upload taskHttp://apis.juhe.cn/cook/query.php Primary and sub-addresses are differentiated by sub-address which interfaceWhen using a GET request, URL encoding is required if the request parameter appears in ChineseGet: Generally used to get data from the server, you need to p

TimeCurrentTime Current Playback timeself.jindu.progress = self.player.currenttime/self.player.duration;Level[Self.player Updatemeters];[Self.pv0 setprogress: ([self.player averagepowerforchannel:0] + +)/animated:yes];[Self.pv1 setprogress: ([self.player averagepowerforchannel:1] + +)/animated:yes];}-(Ibaction) Bofang: (UIButton *) Sender {Delay playback (current device playback time + delay time)[Self.player Playattime:[self.player CurrentTime] + 10];One button for pause, play functionif (self

object is an object that can respond to an event and process it.Uiresponder is the base class for all responder objects, and it defines the programming interface not only for event handling, but also for common responder behavior.When the gesture begins to move, let the center point of the image move with the touch pointCase uigesturerecognizerstatechanged:Self.ii.center=[sender LocationInView:self.view];BreakWhen the gesture moves to the end, determine if the image is in the set area, and if y

= [AFHTTPSessionManager manager]; Create an upload task/** based on Nsurlconnection*/[managerpost:@"Request Path"parameters:@{@"User name": @Passwordconstructingbodywithblock:^ (idSet up files that need to be uploaded nsdata *data = [NSDatadatawithcontentsoffile:@"Path to the long-passing file"]; [FormDataappendpartwithfiledata:data name:@ "file" filename:@ "test.png" mimetype:@ "Image/png"];} success:^ (nsurlsessiondatatask *task, id responseobject) {//upload succeeded} failure:^ (nsurlse

DictionaryNsmutabledictionary *dic = [NSM. Dictiongarywithobject: @ "" forkey:@ "" ";(any object that implements Nscopying)dic setobject: @" "Forkey: @" ". @[] shorthand for ———— arrayNote: Dictionaries are unordered. Create page jump (in dictionary): Move VC Dictionary to TVC 1, create array (immutable) dictionary declared as attribute 2, DIC becomes self at this time. DIC3, number of lines self.dic.count4, number of rows added: 5, display the contents of the province to load the name, 6, creat

{ if ([keyPath isEqual:@name]) { NSLog(@change name: old :%@, new : %@,[change objectForKey:NSKeyValueChangeOldKey],[change objectForKey:NSKeyValueChangeNewKey]); }}@endInitializing monitored objects and monitored objects in the controller, registering the viewer #import viewcontroller.h#import qyperson.h#import qypersonmonitor.h@interface ViewController () @ Property (Nonatomic, Strong) Qyperson *person; @end @implementation viewcontroller-(void) viewdidload {[Super Viewdidloa

Learned yesterday, the method of collision judgment, and learn the new usage of nstimer, today I practice doing a game of bricks, the game realized from the left and right on the three walls, there are 15 bricks, a small ball, a baffle, through the small ball hit the wall and the baffle to achieve the ball. But do not realize after the disappearance of the bricks, can only do a good job of the last created bricks have disappeared after the effect of the crash, this afternoon to review some of

Today lecture a bunch of control, mainly have Uiimageview,uiview,uibutton,uilable,uitextfiled,uitextview, including progress bar, buffer ring switch usage, more difficult isUIButton some of the application of display states, there areuitextfiled the uitextfileddelegate protocol, call some time nodes in the protocol to achieve the desired result; Today, in class, the mind is filled with the application of various control methods and properties, each control has a lot of properties and methods,

value and the return value of the object; 4. Initialization method: No matter what method can take parameters and return values,The initialization of some of the content needs to be changed with the parameter variables, so that each generation of the object name and age have to call simultaneous incoming name and age decision;5, Inheritance: The subclass of some similar behavior with a parent class to initialize these properties and methods, the sub-class in a different place with a global vari

Yesterday intends to go back to the dorm to write, to the dorm suddenly think of dorm no net, today morning to fill, today is practice day, 10 class, Evening eight o'clock self-study end, these two days said most of the training camp told the content, so I feel exceptionally easy! yesterday because the first two days to talk about with the new students, too much content, so the morning only the day before the homework left to speak, the afternoon only talk about the call and generation method;

modes:　 [Java] typedef enum { uiinterfaceorientationportrait = uideviceorientationportrait, Uiinterfaceorientationportraitupsidedown = Uideviceorientationportraitupsidedown, Uiinterfaceorientationlandscapeleft = Uideviceorientationlandscaperight, Uiinterfaceorientationlandscaperight = Uideviceorientationlandscapeleft } uiinterfaceorientation; Copy CodeIf you want to support rotation for any situation as long as you return yes, if you want to support only partially, return Yes t

(_snowflake.center.y>666) {_snowflake.center=cgpointmake (_snowflake.center.x, 66);}}-(void) crash{if (Cgrectintersectsrect (_iv4.frame, _iv3.frame) | | Cgrectintersectsrect (_iv4.frame,_iv2.frame) | | Cgrectintersectsrect (_iv4.frame, _iv.frame) | | Cgrectintersectsrect (_iv4.frame, _iv5.frame)) {_iv4.center=cgpointmake (120, 650);To achieve a collision once the remaining blood volume is reduced by one_blood--;Here's the text must be put here to write. Shows the remaining amount of blood left.

First very grateful to their teacher old boy gave us this hard-won opportunity, and then more thanks to Senhwaiten not only gave us this opportunity and also enthusiastic to explain to us will not, do not understand.For example, the server shelves, in fact, customers bring their own server (to contact customer service and sales staff, need them to accompany), put their servers in the machine room cabinet designated location, plug in power, configure the server IP, gateway, mask DNS and some nece