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  • How to decleare custom protocol in iPhone

    - by iPhoneDev
    Hi, I want to use a protocol, how can we implement it in iPhone. @protocol BasicAPI -(NSString*)hello; @end // In Some method NSURL* url = [NSURL URLWithString@"http://www.caucho.com/hessian/test/basic"]; id<BasicAPI> proxy = (id<BasicApi>)[CWHessianConnection proxyWithURL:url protocol:@protocol(basicAPI)]; NSLog(@"hello: %@", [proxy hello]); Please help me how I can implement above code?

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  • Factory Method and Cyclic Dependancy

    - by metdos
    If I'm not wrong, because of its nature in factory method there is cyclic dependency: Base class needs to know subclasses because it creates them, and subclasses need to know base class. Having cyclic dependency is bad programming practice, is not it? Practically I implemented a factory, I have problem above, even I added #ifndef MYCLASS_H #define MYCLASS_H #endif I'm still getting Compiler Error C2504 'class' : base class undefined And this error disappers when I remove subclass include from base class header.

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  • non-static method cannot be referenced from a static context

    - by Mith
    I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/ I get this error: non-static method getContentCharSet(org.apache.http.HttpEntity) cannot be referenced from a static context String charset = getContentCharSet(entity); This error is line 13 on the second box. Any ideas? I have been really struggling with this code :-(

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  • method with two parameters which both need to be double dispatched

    - by mixm
    lets say i have a method which has two parameters. i have been implementing them as: if(aObj instance of Marble) { if(bObj instance of Bomb) { this.resolve((Marble)aObj,(Bomb)bObj); } } as you can see its not a very pretty solution. i plan to implement using double dispatching, but with two parameters which both need double dispatching, im afraid im a bit stumped. any ideas please. im implementing in java btw.

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  • What does IUrlHistoryStg::BindToObject Method do ?

    - by BHOdevelopper
    I'm looking for a way to access the address bar search so that i can append some personnal url at the end of the current list, and i found 'IUrlHistoryStg::BindToObject' but there is no documention linked to it. Anyone knows what this method does ? On msdn: http://msdn.microsoft.com/en-us/library/aa767718%28VS.85%29.aspx

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  • Determine if method is unsafe via reflection

    - by hmemcpy
    I'm looking for a way to filter out methods which have the unsafe modifier via reflection. It doesn't seem to be a method attribute. Is there a way? EDIT: it seems that this info is not in the metadata, at least I can't see it in the IL. However reflector shows the unsafe modifier in C# view. Any ideas on how it's done? Thanks!

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  • Bind multiple events to jQuery 'live' method

    - by Will Peavy
    jQuery's 'live' method is unable to handle multiple events. Does anyone know of a good workaround to attach multiple events to a function that polls current and future elements? Or am I stuck using duplicate live methods for each event handler I need? Example - I am trying to do something like: $('.myclass').live('change keypress blur', function(){ // do stuff });

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  • Divide and conquer method to compute roots [SOLVED]

    - by hellsoul153
    Hello, Knowing that we can use Divide-and-Conquer algorithm to compute large exponents, for exemple 2 exp 100 = 2 exp(50) * 2 exp(50), which is quite more efficient, is this method efficient using roots ? For exemple 2 exp (1/100) = (2 exp(1/50)) exp(1/50) ? In other words, I'm wondering if (n exp(1/x)) is more efficient to (n exp(1/y)) for x < y and where x and y are integers.

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  • NoMethodError: undefined method `has_attached_file'

    - by mirza
    Paperclip produces this error, after checking out the plugin's rails3 branch. My Gemfile has following line: gem 'paperclip', :git => 'http://github.com/thoughtbot/paperclip.git', :branch => 'rails3' And the error message is: NoMethodError: undefined method `has_attached_file' for #<Class:0x2a50530>

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  • Calling Subclass Method in Java

    - by destructo_gold
    Given the following situation (UML below), If Y has the method: public void PrintWs(); and X has: ArrayList <P> myPs = new ArrayList(); Y y = new Y(); Z z = new Z(); myPs.add(y); myPs.add(z); How do I loop through each myPs object and call all Ys PrintWs (without using instanceof)? http://starbucks.mirror.waffleimages.com/files/68/68c26b815e913acd00307bf27bde534c0f1f8bfb.jpg

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  • Custom Tag implementation issue

    - by Appps
    I have a custom tag as follows. repeat and heading tag have doAfterBody method implemented. <csajsp:repeat reps="5"> <LI> <csajsp:heading bgColor="BLACK"> White on Black Heading </csajsp:heading> </LI> </csajsp:repeat> /* Repeat tag Class*/ public void setReps(String repeats) { System.out.println("TESTING"+repeats); //sets the reps variable. } public int doAfterBody() { System.out.println("Inside repeate tag"+reps); if (reps-- >= 1) { BodyContent body = getBodyContent(); try { JspWriter out = body.getEnclosingWriter(); System.out.println("BODY"+body.getString()); out.println(body.getString()); body.clearBody(); // Clear for next evaluation } catch(IOException ioe) { System.out.println("Error in RepeatTag: " + ioe); } return(EVAL_BODY_TAG); } else { return(SKIP_BODY); } } /* Class of Heading tag */ public int doAfterBody() { System.out.println("inside heading tag"); BodyContent body = getBodyContent(); System.out.println(body.getString()); try { JspWriter out = body.getEnclosingWriter(); out.print("NEW TEXT"); } catch(IOException ioe) { System.out.println("Error in FilterTag: " + ioe); } // SKIP_BODY means I'm done. If I wanted to evaluate // and handle the body again, I'd return EVAL_BODY_TAG. return(SKIP_BODY); } public int doEndTag() { try { JspWriter out = pageContext.getOut(); out.print("NEW TEXT 2"); } catch(IOException ioe) { System.out.println("Error in HeadingTag: " + ioe); } return(EVAL_PAGE); // Continue with rest of JSP page } The order in which SOP are printed is 1) Setter method of csajsp:repeat is called. 2) White on Black Heading is printed. ie doAfterBody of csajsp:heading tag is called. I don't know why it is not calling doAfterBody of csajsp:repeat tag. Please help me to understand this. Thanks in advance.

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  • how to load json in separate method

    - by frosty
    I need to generate the playlist dynamically. What is the best way to extract the playlist so that the playlist json below is separated into a different method or variable. $f(videoid, "/swf/flowplayer-3.1.5.swf", { playlist: [ { url: videoUrl }, { url: '59483.flv', title: 'Palm trees and the sun' }, { url: '58192.flv', title: 'Happy feet in a car' }, { url: '63617.flv', title: 'People jogging' } ], wmode: 'opaque', plugins: { gatracker: { url: "/swf/flowplayer.analytics-3.1.5.swf", trackingMode: "Bridge", debug: false } } });

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  • Pay pal direct method

    - by savitha
    hi, I am using paypal direct method. error is This transaction cannot be processed due to an invalid merchant configuration. How to accept or activate billing agreement while i am using sandbox account.

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  • javascript add prototype method to all functions?

    - by salmane
    Is there a way to add a method to all javascript functions without using the prototype library? something along the lines of : Function.prototype.methodName = function(){ return dowhateverto(this) }; this is what i tried so far but it didnt work. Perhaps it is a bad idea also if so could you please tell me why? if so can I add it to a set of functions i choose something like : MyFunctions.prototype.methodName = function(){ return dowhateverto(this) }; where MyFunctions is an array of function names thank you

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  • Execute method on startup in spring

    - by Javi
    Hello, Is there any Spring 3 feature to execute some methods when the application starts for the first time? I know that I can do the trick of setting a method with @Scheduled annotation and it executes just after the startup, but then it will execute periodically. Thanks.

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