atd supplement

In the previous article "Supplement to SQL query optimization -- (in)", we mainly discussed the query statements such as select... from... where... in. Next, let's discuss Select... from... where... exists. The query speed of exists is much higher than that of in, which is well known, but we cannot say that exists is used to replace in completely. Why? Let's take a look at the use of exists instead of in. Select... from a where ID in (select ID fro

Constructor: Tweenmax (Target:object, Duration:number, Vars:object)Target:object-objects that need easingDuration:number--Slow durationVars:object--Other parameters (unique attributes 29, plug-in 17, public properties 10, public method 20)Here is a supplement to VARs:In fact, are basically some of the properties of CSS3: .....(1) x:x axis movement{x:100} or {x:-100} ...(2) Y:y axis movement{y:100} or {y:-100} ...(3) Alpah: Transparency{alpah:0} or {al

BSP Splitting Algorithm supplement-after the document on splitting a triangle is completed, a complicated scenario is created. After segmentation, problems with the original algorithm are discovered. According to this supplement, the original document will be deleted and modified again, causing inconvenience to readers. I hope you will forgive me. In the segmentation algorithm mentioned in the previous arti

[Binwood Lua column] basic Supplement 04: Preliminary Exploration of the iterator and Preliminary Exploration of lua The content I learned today is quite interesting. I was excited ~ Stupid wood and flowers contribute, huh? Flowers? No, it's your heart ~ Reprinted please note, original address: http://www.benmutou.com/archives/1714 Source: dummies and Game Development 1. iterator What is an iterator? Don't be silly. What I hate most is glossar

RedHat/CentOS ext4 cannot format large partitions supplement ext4 formatting Method RedHat/CentOS ext4 cannot format large partitions supplement ext4 formatting Method In general, XFS may cause data loss in the case of massive small file I/O scenarios. In this scenario, inode occupies a large amount of teaching resources. The above method is used for formatting, and the number of inode is small. Through a l

IOS KVC supplement and instanceHow does KVC supplement and instance get value and modify value --> How -(Void) setValue :( id) value forKey :( NSString *) key-(id) valueForKey :( NSString *) key // uses the key as the identifier to obtain the corresponding property value-(void) setValue :( id) value forKey :( NSString *) key // use the key as the identifier to set its corresponding property value-(id) value

jquery supplement, Analog picture MagnifierHtmlDOCTYPE HTML>HTMLLang= "en">Head> MetaCharSet= "UTF-8"> title>Titletitle> Linkrel= "stylesheet"href= "Css/fdj.css">Head>Body>Divclass= "outer"> Magnifier Body Div - Divclass= "Small_box"> magnifying glass area for small plots - Divclass= "float">Div> the glass cover area in the small picture - imgsrc= "Img/small.jpg"> Div> Divclass= "Bi

(2) Question two: the way to pass the parameters;Http://www.cnblogs.com/landeanfen/p/5337072.html's supplement to this articleTest one as follows:1) The backend code is as follows,Note 1: There can be only one parameter in the method in the API, which cannot occur like thispublic Object Post (logininfo user,string name) Public classLogincontroller:apicontroller {[HttpPost] Public Objectpost (logininfo user) {return user.strpwd; } Public

The main contents of this section : == the difference 2. encoding problem ? difference between. is and = =1. ID ()by ID () we can see the value of the variable table? The address in memory Note----python , command? Code and py? The effect of the code shipped in the piece may not be a kind of >>>SaidWith so much.This oneID ()AndIsWhat's the matter?System?.Attention. Is? moreIs thatID ()The calculated results.Byid Yes, help me. View data () memory address so

This essay is a supplement to Python's notes-adorners.When using adorners, some properties of the decorated function are lost, such as the following code:1 #!/usr/bin/env python2 3 defDeco (func):4 defwrapper ():5 Print "Wrap Start"6 func ()7 Print "Wrap end\n"8 returnwrapper9 Ten @deco One deffoo (): A """docstring for Foo""" - Print "In foo ():" - the foo () - PrintFoo.__name__ - PrintFoo.__doc__The output is as foll

spent the 10 Many minutes, probably pc Recommended Links:1, the Android SDK manager update download slow solution:http://my.oschina.net/765155496/blog/2992722, the establishment of virtual machines: Baidu (Geek College Android introductory video) 3 Tip:emulator:ERROR:x86 emulation currently requires hardware acceleration! Please ensure the Intel HAXM is properly installed and usable. : Installation HAXM: http://blog.csdn.net/rznice/article/details/402102134 6 Build your first debug program an

", "Age": 20}6, the universal parameters (A * must be placed in front)def f3 (*args,**kwargs):Format ()S1 = "I am {0}, age {1}". Format ("LZ", "a") s2 = "I am {0}, age {1}". Format (*["LZ", +]) s3 = "I am {name},age {age}". Format (Nam E=LZ.AGE=20) S4 = "I am {name},age}". Format (**{"name": "LZ", "Age": +}) "I am lz,age 20"7. The function parameter is passed as a referenceGlobal variables, all scopes are readableThe global variable is "re-assigned" and requiresSpecial: List, dictionary, modifia

}, age {1}, really {0}". Format ("Wenchong", 8) S4="I am {0}, age {1}, really {0}". Format (*["Wenchong", 8]) S5="I am {name}, age {age}, really {name}". Format (name="Wenchong", age=8) S6="I am {name}, age {age}, really {name}". Format (**{"name":"Wenchong"," Age": 18}) S7="I am {0[0]}, age {0[1]}, really {0[2]}". format ([1, 2, 3], [11, 22, 33]) S8="I am {: s}, age {:d}, Money {: F}". Format ("Wenchong", 8, 88888.1) S9="I am {: s}, age {:d}". Format (*["Wenchong", 8]) S10="I am {name:s}, age {

3. Supplement of strings, lists, tuples, dictionaries, and collections, and string dictionariesRelated: String List Dictionary Set Additional: Many python compilers provide code complementing functions and prompt functions when entering parameters. String 1. Common functions: The string is an immutable object, and the string method does not change the data of the original string. S = "hEllo world! \ T "print (" s.

before loading-(BOOL) WebView: (UIWebView *) WebView shouldstartloadwithrequest: (Nsurlrequest *Request Navigationtype: (uiwebviewnavigationtype) navigationtype{returnYES;}- (void) Webviewdidstartload: (UIWebView *) webview{NSLog (@"Web page starts loading");//a daisy appears on the load waiting page//creating a back-end translucent viewUIView *view =[[UIView alloc] initWithFrame:self.view.frame]; View.tag=108; View.backgroundcolor=[Uicolor Blackcolor]; View.alpha=0.5; [Self.view Addsubview:vie

) {return function (value) {contexts[i] = this;values[I] = Arguments.lengt H > 1? Core_slice.call (arguments): value;if (values = = = Progressvalues) {Deferred.notifywith (contexts, values);} else if ( ! (--remaining)) {//This is reduced to 0, triggering. Deferred.resolvewith (Contexts, values);}};},progressvalues, progresscontexts, resolvecontexts;//add listeners to Deferred subordinates; Treat others as resolvedif (length > 1) {progressvalues = new Array (length);p rogresscontexts = new Array

} - returnDigit; - } the - //How many arrays do you need? A count, a start and a collection of staging arrays? The last copy will be back! - voidDigitsort (int*A, size_t size) - { + intMaxdigit =Getmaxdigit (A, size); - intCurdigit =1; + intdigit =0; A intcount[Ten]; at intstart[Ten]; - int*bucket =New int[size]; - while(Digit maxdigit) - { -memset (Count,0,sizeof(int) *Ten); -memset (Start,0,sizeof(int) *Ten); in for(inti =0; i i) - {

Step by step learning PHP (4) php function Supplement 2. 1. Solve the scope problem. I talked about the function scope in PHP in the previous section. if the class is not enough to explain the problem, the scope example in this article may be more convincing to you. 1. Solve the scope problem In the previous section, I talked about the function scope in PHP. if the class is not enough, the scope example in this article may be more convincing to you.

Article Title: This article analyzes the supplement of SecureCrt using SSH2. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 1. First generate the ssh2 key pair. I chose to use RSA encryption. Generate your key in SecureCRT (Global Options-> SSH2-> Create Identity File) in RSA format 2. Create the. ssh directo

solution is to application:didFinishLauchingWithOptions: create a view controller in the method and appoint it as the rootviewcontrollerof window . The code is as follows:Func Application (Application:uiapplication, Didfinishlaunchingwithoptions launchoptions: [NSObject: Anyobject]?) -Bool { Self. Window=UIWindow(Frame:uiscreen. Mainscreen(). Bounds) Self. Window. Rootviewcontroller=Uiviewcontroller()//This is where a new view controller is created.Let MainView = Self. Window!. Rootviewcontroll