sonos explained

Original url:http://www.2cto.com/database/201203/122387.htmlOracle Cursor Concepts Explained What is a cursor? ① retrieves the result set from the table, and the mechanism from which each point points to a record for interaction. The operations in the ② relational database are performed on the complete rowset. The rowset returned by the SELECT statement includes all rows that satisfy the conditions listed in the WHERE clause of the statement

restore all of its corresponding settings in the current save state to the previous stateCode:Script Type="Text/javascript" >Window.onload=function () {var ctx=document.getelementbyidx_x ("canvas"). GetContext ("2d");Ctx.fillrect (10,10,150,150);Ctx.save ();ctx.fillstyle="White";Ctx.fillrect (30,30,110,110);Ctx.save ();ctx.fillstyle="Blue";Ctx.fillrect (50,50,70,70);Ctx.restore (); //Return to the previous state, i.e. ctx.fillstyle= "white";Ctx.save ();Ctx.fillrect (70,70,30,30); //So there is

SetTimeout object that has been setClearinterval (object) clears the SetInterval object that has been setGive a brief account of two cases.Example 1. Verbatim output strings when a form is triggered or loadedCopy CodeThe code is as follows:Example 2. When the focus is on the input box, check the input box information periodically, and do not perform the check action when the focus is absent.Copy CodeThe code is as follows:Example 3: The following is the simplest example, the timer time arrives

location. can help develop many positioning problems and make changes. 13. External network testing and external network testing the main reality of the simulation of customer use of the network environment, the verification of the customer single program in the actual network environment usage and business operations. • External network testing is mainly covered by wifi\2g\3g, Net\wap, telecom \ Mobile Unicom, all possible combinations are tested. • Principle: • 1. To cover the user's usage sc

Css3, Use Cases of background-clip/background-origin, which can be explained in general and css3backgroundclip Let's not talk about the usage of background-clip/background-origin. Let's talk about css background. 1 The width and height of p are 100 PX, and the color range is 100 *, right? What if padding-top: 10px is added to p? So the current height is 110, and the color background is 100*110, right? Because the background includes padding, it is cr

-generated constructor stub } @Override protected voidOnLayout (BooleanChangedintLintTintRintb) { //TODO auto-generated method stub //Dynamic acquisition of child view instances for(inti =0, size = Getchildcount (); i View view = Getchildat (i); //Place sub view, Width height is View.layout (L, T, L + -, T + -); L + = -+ padding; } } }XML layout of activity: relativelayout xmlns:android =" Http://schemas.android.com/apk/res/android " xmlns:tools

the background of the Actionbar, the problem here is that the api-7 and api-11 code is written in the same file, the result can not be compiled through eclipse, The solution is to divide this themes.xml into multiple files, and the project automatically generates VALUES-V7, Values-v11, VALUES-V14, Themes.xml can be divided into several different versions of the different values, different devices of different styles is probably the way to achieve it?The original text on the StackOverflow:EDIT :

Refer to Http://spring.io/guides/gs/maven-android/The pom.xml of a typical Android Maven project is as follows More information: http://maven.apache.org/pom.htmlAndroid Maven Pom.xml Explained

representation of polymorphism between a parent class and a subclass, and overloading overloading is a representation of polymorphism in a class. If you define a method in a subclass that has the same name and arguments as its parent class, we say that the method is overridden (overriding). When an object of a subclass uses this method, the definition in the subclass is called, and for it the definition in the parent class is "masked". If more than one method with the same name is defined in a

'). Success (function (data) {$scope. phones = data;});Replaced by:$scope. Phones = Phone.query ();We use this simple statement to query all the phones.Another very important note is that, in the above code, when the Phonelistctrl controller calls the phone service method, we do not pass any callback functions. Although this seems to be a synchronous return, it is not at all. The synchronization returned is a "future"-an object that populates the data when the XHR response is completed. Given t

, or variableThe @ method calls for example: @Html. TextBox ("UserName"). ToString ()2. Code blockFirst case:@{code block}@if (condition) {code block}@Switch (condition) {Branch match code block}@for (loop control) {code block}@foreach (loop control) {code block}@while (loop control) {code block}@do {code block} while (loop control) The code inside the code block must follow the C # syntax strictly, and the end of each line must have a semicolon "Second case: (text in code block or HTML client t

304 not Modified ');set the length of the content (can be used when caching)Header (' content-length:1234 ');used to identify the download fileHeader (' Content-type:application/octet-stream ');Header (' content-disposition:attachment; filename= ' Abcd9.zip ');Header (' content-transfer-encoding:binary ');Disable caching of the current documentHeader (' Cache-control:no-cache, No-store, max-age=0, Must-revalidate ');Header (' Expires:mon, Jul 1997 05:00:00 GMT ');Set Content TypeHeader (' conte

1, open its rewrite module:sudo a2enmod rewrite 2, CONFIGURED to be overridable:Open/etc/apacheOptions FollowSymLinksAllowOverride AllUnder Project directory, create a new. htaccess file, adding the following:[qsa,pt,l ] 3, rewrite the rule:　　　　　　 Apache Rewrite module: Rules explained

the test taker hears the bell pool-1-thread-4 starts to answer the examinee hears the ringtone pool-1-thread-5 starts to answer the examinee pool-1-thread-4 to test the examinee pool-1-thread- 8 to test the examinee pool-1-thread-9 to test the examinee pool-1-thread-1 to test the examinee pool-1-thread-10 handed in the examinee pool-1-thread-3 handed in the examinee pool-1-thread-2 test taker pool-1-thread-6 test taker P Ool-1-thread-5 test Taker POOL-1-THREAD-7 Examination exam completed main

! See if Countdownlatch's Countdown method can clog me up! Examinee pool-1-thread-10 hand over to see Countdownlatch countdown method can block me! Examinee pool-1-thread-7 hand over to see Countdownlatch countdown method can block me! Examinee pool-1-thread-4 hand over to see Countdownlatch countdown method can block me! Examinee pool-1-thread-3 hand over to see Countdownlatch countdown method can block me! Examinee pool-1-thread-5 hand over to see Countdownlatch countdown method can block me!

of the content div. Speaking of which, let's take a look at the meaning of the word "floating". Our original understanding was: floating on a plane, but through this experiment, we found that this is not just a flat float, but a three-dimensional float! That is, when the content of this div plus floating this property, on the side of the display, it has been out of the box of the Div, that is, the content of the width of the height is how much, for the already detached box, are not working.

Use of the JS timer (example explained)Font: [Increase decrease] Type: Reprint time: 2014-01-06 I want to commentThis article mainly introduces the method of using the timer in JS. Need friends can come to the reference, I hope to help youIn JAVASCRITP, there are two dedicated functions for timers, respectively:1. Countdown Timer: Timename=settimeout ("function ();", delaytime);2. Cycle Timer: Timename=setinterval ("function ();", delaytime);The first

Operations dictionary (to prevent operations from getting bigger, and to re-download after the download fails)//刷新当前行的图片数据 self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];Here we do not need [Self.tableview reloadata], because the entire cell will be refreshed, wasting performance.Of course if you need to do a lot of things in the download operation, you can consider customizing the operation. Since I am just a simple download of the small map t

Getsettunitbysettunitid (String systemid, String Merchantid, String businesstype) {key= #systemId + #merchantId + #businessType "Object cache key value, need to be guaranteed unique, with spring Spel expression, value is the ID property value of the ISBN objectValue= "Sysparamcache": Refers to the cache name in Ehcache.xml5. Unit Test @Test public void Getsettunitbysettunitidtest () { String systemid = "CES"; String Merchantid = "133"; Settunit configsettunit = Settun

getinstance () method to create the instance, then we need to first new object. obtained through object. Method name, but our goal is not to generate multiple objects through new, so we need to add Statickeyword, to complete, directly through Singleton.getinstance () to create a unique instance of this class.5.static Decorated code blockThe static code block is independent of member variables and methods, and he is not in any method body, the JVM runs a block of code when it loads the class. Su