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1.__weak typeof (self) myself = self;2.__weak Recommendviewcontroller *RECOMMENDVC = self;The above two kinds of writing is an effecttypeof (Self) is the type that gets to self, so that the definition of weakself is a type of self, plus __weak is to create a reference, the whole sentence is to self define a reference to the nature of the alias;This is generally u

I want to use PHP to write some data structure to improve, write to the chain when you see Joseph Ring problem, try to use a circular chain to write a bitJoseph Ring:Josef Ring (Joseph question) is a mathematical application problem: known n individuals (denoted by number 1,2,3...N) sit around

(source, 0, 0, paint) on the canvas; return bitmap;}3.BitmapUtils class--Compress pictureImplementation of image compression processing//Setting wide height must use floating-point type, otherwise result in compression ratio: 0public static Bitmap Zoom (Bitmap source,float width, float height) { Matrix Matrix = new Matrix (); Image compression processing Matrix.postscale (Width/source.getwidth (), Height/source.getheight ()); Bitmap Bitmap = bitmap.createbitmap (source, 0, 0, sou

System. invalidoperationexception is reported when a data object is serialized using LINQ to SQL. circular reference is detected when a serialized object is serialized. Exception information (Part ): System. Web. Services. Protocols. soapexception: the server cannot process the request. ---> System. invalidoperationexception: An error occurred while generating

Sometimes we use the circular avatar in the application, the following is the use of circleimageview to achieve the circular head of the demo, the following effect and code, the effect is as shown The implementation is also relatively simple, first in the project to build a Circleimageview package used to store Circleimageview class, will be directly to the Ci

Use a circular linked list to implement Joseph ring (number of perimeter loops) and number of perimeter Loops At the beginning, I learned C and encountered the classic circle report number problem. Now I will first attach the implementation code below: # Include # Include Struct LNODE {// linked list definitionInt data;Struct LNODE * next;};Typedef struct LNODE Lnode;Typedef struct LNODE * LinkList;Struct

How do I create a circular picture? Let's summarize today:1. Add photo.m and Phone.h two files2. Add header file Photo.h3. Create rounded corners UiimageviewSelf.headimageview = [[Uiimageview alloc]initwithframe:cgrectmake (124, +, the, the)];self.headimageview.layer.borderwidth=2.0;//Edge WidthSelf.headImageView.layer.borderColor = [Uicolor colorwithwhite:1.0Alpha0.3]. Cgcolor;//Edge ColorSelf.headImageVie

Javascript + html5 implements the canvas method to draw a circular pattern, html5canvas This article describes how to use JavaScript + html5 to draw a circular canvas. Share it with you for your reference. The specific implementation method is as follows: I hope this article will help you with web programming.

Several circular accesses to the collection object list in Java are summarized as follows 1 Classic for loop public static void Main (string[] args) { list 2 Enhanced for loop public static void Main (string[] args) { list 3 Use of Iterate public static void Main (string[] args) { list The above article on the collection object list in Java Several

#import@interfaceCircleprogressview:uiview/** Starting value (0-1)*/@property (nonatomic,assign) cgfloat fstartvalue;/** Border Width*/@property (nonatomic,assign) cgfloat flinewidth;/** Line Color*/@property (nonatomic,strong) Uicolor*LineColor;/** Value of Change*/@property (nonatomic,assign) cgfloat fvalue;@end#import "CircleProgressView.h"@interfaceCircleprogressview () {Cashapelayer*_shapelayer;}@end@implementationCircleprogressview@synthesizeFstartvalue=_fstartvalue;@synthesizeFlinewidth=_

This article mainly introduces the example of using the GD library in PHP to create a circular pie chart. The code example provided in this article implements a sector statistical chart. For more information, see PHP, some simple image functions can be used directly, but most of the images to be processed need to be compiled with the GD library. In addition to in

I have shared with you a very ingenious technique for drawing triangles with pure CSS (see related articles). Over the past year, I have found that this technique of using CSS to draw triangles is very useful and efficient, especially when creating a similar page effect such as a cue box/prompt. Another form that can be easily implemented with CSS is

) Scrollviewdidenddecelerating: (Uiscrollview *) ScrollView2 {3 floatx=Self.scollview.contentoffset.x;4 //Turn left5 if(x0|| x==0) {6 if(self.currentpage==0) {7Self.currentpage= (int) self.imagearray.count-1;8}Else9 {Tenself.currentpage--; One } A } - //Right - if(x>width*2|| x==width*2) { the if(self.currentpage== (int) self.imagearray.count-1) { -Self.currentpage=0; -}Else - { +self.cur

How to draw a circular chart in php _ phpgd Library // 1. create a canvas $ Im = imagecreatetruecolor (300,200); // create a real-color image. the default background is black and the image identifier is returned. Another function, imagecreate, is not recommended. // 2.

When a block is defined, a copy of the external variable is made and a strong reference is made to self1.__weak is available in iOS 5.0__weak is equivalent to weak itself as a weak reference, but if the object is freed, the address that is executed will point to nil more secure__weak typeof (self) weakself = self;2__un

1MEpUSkdOV0UyVERWTU1sUWxNa1ptYjI1MGMybDZaU1V5UmpRd01DVXlSbVpwYkd3bE1rWkpNRXBDVVd0R1EwMUJKVE5FSlRORUpUSkdaR2x6YzI5c2RtVWxNa1kzTUNVeVJtZHlZWFpwZEhrbE1rWlRiM1YwYUVWaGMzUT0= "width =" 605 "Height =" 291 "/> The first case above is equivalent to using self. XXX is used to access instance variables, so strong references point to self. In the second case, the instance variables are changed to local temporary variables. Strong references direct to this local temporary variable. In most cases, we only