backlink techniques

to the Alpha property on the UIView, which affects the sub-hierarchy It is worth noting that the Calayer O Pacity property setting transparency causes the parent layer and sublayer to have a more hierarchical outline of the problem can implement group transparency for Yes by setting the Shouldrasterize property of Calayer To resolve the parent-child contour caused by transparency blending significantly Use example: cgrect frame=c

background color of each face or by directly using a picture with a light effect Using the Glkit frame to do the calculation of vectors (slightly) Click events: The processing of click events is determined by the order of the views in the parent view, not the z-order in 3D space Solution: When stereoscopic display views cause event interception due to response order issues The Userinteractionenabled property is set to No to suppress event passing except for

: @selector (step:)]; [Self.timer Addtorunloop:[nsrunloop Mainrunloop] formode:nsdefaultrunloopmode]; [Self.timer Addtorunloop:[nsrunloop Mainrunloop] formode:uitrackingrunloopmode]; Similar to Cadisplaylink, Nstimer can also be configured with different run loop modes, through other functions instead of +scheduledtimerwithtimeinterval: constructors: Self.timer = [Nstimer timerwithtimeinterval:1/60.0 Target:self

: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath { Dequeue cell UITableViewCell *cell = [Self.tableview dequeuereusablecellwithidentifier:@ "Cell" Forindexpath:indexpath]; ... Set Text Shadow Cell.textLabel.backgroundColor = [Uicolor Clearcolor]; Cell.textLabel.layer.shadowOffset = Cgsizemake (0, 2); cell.textLabel.layer.shadowOpacity = 0.5; Rasterize Cell.layer.shouldRasterize = y

(str): Removes whitespace characters at both ends of a string.such as: $.trim ("Hello, how is it?") "); Back to "Hello,how is you?" "12. Resolving conflicts between custom methods or other class libraries and jqueryMany times we have defined the $ (ID) method to get an element, or some other JS class library such as prototype also defined the $ method, if you put together these elements will cause variable method definition conflict, jquery specifically provides a way to solve this problem.Use

= Myrequest.getrequeststream ()){Writer.write (payload, 0, payload. Length);Writer.close ();}Receive dataHttpWebResponse Myresponse;Myresponse = (HttpWebResponse) myrequest.getresponse ();if (myresponse! = null){Result. Issuccess = true;using (Stream s = Myresponse.getresponsestream ()){StreamReader Mystreamreader = new StreamReader (s, Encoding.UTF8);Result. Resultdata = Mystreamreader.readtoend ();Mystreamreader.close ();Myresponse.close ();S.close ();Myrequest.abort ();}}else if (Myresponse.

special needs of converting XML to JavaBean, an Apache-named Digester tool gives us a choice. Since XML is eventually converted to JavaBean stored in memory, the analytic performance is not really much related to the user. The key to parsing is to match the pattern of XML and rules, etc., because the tool is more complex, confined to space, the author can only give a simple introduction.Here is an example fragment of Digester parsing XML:Listing 4. Digester parsing XMLDefine the path to the XML

("input[type= ' checkbox ']"). each (function (i) {if ($ (this). attr ("checked")) {if (i!=0) {//Cannot delete Row headers$ ("#table1 tr:eq (" +i+ ")"). Remove ();}}});}This is better than the top one. Delete multiple recordsfunction Btndeleterow () {$ ("#table1 tr"). each (function (i) {var chk=$ (this). Find ("input[type= ' checkbox ']");if (chk.attr ("id")! = "Checkall") {//Cannot delete header rowif (chk.attr ("checked")) {$ (this). Remove ();}}});}13. Client SaveCopy CodeThe code is as fol

longer. But it also means more efficient (often closer to lower-level code readability and higher performance, for example: compilation, which of course requires more powerful talent). Keep in mind that no framework can be smaller, lighter, and more efficient than native code (note: The test link is invalid and the test code can be searched online).Given the performance differences between vanilla and jquery, I strongly recommend absorbing the essence of the two, using the native code equivalen

them to the browser. Apache2 is used in this article. However, any Web server can meet the requirements.To use some Debugging techniques described in this article, you need to install Eclipse V3.1.1 and PHPEclipse V1.1.8. Because Eclipse requires Java? Technology, so you need to download it.You also need the PHP debugger extension module. Installing it is a little troublesome. Follow the instructions for installing the debugger extension carefully. N

necessary to do this compatibility work-console.log () and other debugging code should be removed from the final product code.Third, the use of parametersSimilar to the alert () function, Console.log () can also accept variables and splice them with other strings:The code is as follows:// Use variable " Bob " ; Console.log ("" + name);Unlike the alert () function, Console.log () can also accept variables passed as arguments to a string, with specific syntax consistent with the printf syntax in

Techniques for writing highly efficient javascript eventsHow to make efficient web Front-end programs is a problem that I will not consciously consider every time I do front-end development. A few years ago, Yahoo's awesome front-end engineers published a book about improving the web Front-end performance, which caused a sensation in the entire web development technology field, turning the mysterious web front-end optimization problem into a cabbage,

lose a bet to write code, look at the following example:Bad, doesn ' t compileswitch (value) {case 1:int j = 1; Case 2:int j = 2; break;} Goodswitch (value) {case 1: { final int j = 1; break; } Case 2: { final int j = 2; break; } Remember: Default: throw new Threaddeath ("that ' ll teach them");}In a switch statement, each CASE statement has a range of only one line of statements, in fact, these case statements are not even real statem

+ 4;});Temparr content is: [4,5,6]var temparr=$.map ([0,1,2], function (i) {return i > 0? i + 1:null;});Temparr content is: [2,3]$.merge (ARR1,ARR2): Merges two arrays and removes duplicate items.such as: $.merge ([0,1,2], [2,3,4])//return [0,1,2,3,4]$.trim (str): Removes whitespace characters at both ends of a string.such as: $.trim ("Hello, how is You?"); Back to "Hello,how is you?" "12. Resolving conflicts between custom methods or other class libraries and jquery Many times we have defined

Methods and Techniques for batch database insertion using different ORM frameworks in java1. Use executeBatch in jdbc Mode In JDBC, you can use the executeBatch () method to reduce the number of database calls, such: Statement pstmt = conn. createStatement (); pstmt. addBatch (insert into settings values (3, 'xiaomi ', 'female'); pstmt. addBatch (insert into settings values (4, 'lily', 'female); pstmt. addBatch (insert into settings values (5, 'John,

var div =$ (' ": "Bigblue" "CSS" "Background-color": "Purple""width":"height":// Use the JQuery method as the property "width":"height": ());d iv. appendTo (' body ');Cancel Right Click event$ (function() { $ (document). On (function(e) { E. preventdefault (); });});Cancel Text selectionAdapt to all browsers$ (' P.DESCR '). attr (' unselectable ', ' on ' ) . css (' user-select ', ' None ' ) . On (false);Parse anchor element URL// URLs that n

Course Address: Https://class.coursera.org/ntumltwo-002/lectureImportant! IMPORTANT-Important ~First, the motive of Adaptive boostingBy combining multiple weak classifiers (Hypothese), a more powerful classifier (Hypothese) is built to achieve the effect of "Three Stooges equals".In practice, for example, a more complex model can be composed of simple "horizontal" "vertical".Second, the sample weightA very important concept in the AdaBoost meta-algorithm is called sample weight U.Learning algori

Reconstruction Techniques: reorganizing functions [5]. Restructuring manipulation functions Total returned directory Directory of this section Replace Method with Method Object (Replace functions with function objects) Substitute Algorithm (replacement Algorithm) Stage Summary 8 Replace Method with Method Object (Replace functions with function objects) Summary You have a large function where the use of local variables makes it impossible to use t

Reconstruction Techniques: reorganizing functions [4]. Restructuring manipulation functions Total returned directory Directory of this section Split Temporary Variable (break down Temporary variables) Remove Assignments to Parameters (Remove the value assigned to the parameter) 6 Split Temporary Variable (break down Temporary variables) Summary A temporary variable in your program is assigned more than once. It is neither a cyclic variable nor used

, with fewer IDs.(3) CSS Hack:ie conditional notation (best compatibility, increased development and maintenance costs)Selector prefix method (enhanced maintainability, but not compatible, not for inline styles)Style attribute prefix method (higher set, more streamlined code, more maintainable, but there is a compatibility risk, can be used inline style)(4) solve the problem that the hover style does not appear after hyperlink access: A label four sort of states, the love hate principle, that is