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  • Objective C: Which is changed, property or ivar?

    - by Wilhelmsen
    Worrying about duplicates but can not seem to find and answer I can understand in any of the other posts, I just have to ask: When I have in my .h: @interface SecondViewController : UIViewController{ NSString *changeName; } @property (readwrite, retain) NSString *changeName; then in my .m @synthesize changeName; -(IBAction)changeButton:(id)sender{ changeName = @"changed"; } Is it the synthesized property or the instance variable that get changed when I press "changeButton" ?

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  • Delphi getting property value of a member from ClassType

    - by Kayode Yusuf
    I am implementing a Boilerplate feature - allow users to Change descriptions of some components - like Tlabels - at run time. e.g. TFooClass = Class ( TBaseClass) Label : Tlabel; ... End; Var FooClass : TFooClass; ... At Design time, the value Label's caption property is say - 'First Name', when the application is run, there is a feature that allows the user to change the caption value to say 'Other Name'. Once this is changed, the caption for the label for the class instance of FooClass is updated immediately. The problem now is if the user for whatever reason wants to revert back to the design time value of say 'First Name' , it seems impossible. I can use the RTTIContext methods and all that but I at the end of the day, it seems to require the instance of the class for me to change the value and since this has already being changed - I seem to to have hit a brick wall getting around it. My question is this - is there a way using the old RTTI methods or the new RTTIContext stuff to the property of a class' member without instantiating the class - i.e. getting the property from the ClassType definition. This is code snippet of my attempt at doing that : c : TRttiContext; z : TRttiInstanceType; w : TRttiProperty; Aform : Tform; .... Begin ..... Aform := Tform(FooClass); for vCount := 0 to AForm.ComponentCount-1 do begin vDummyComponent := AForm.Components[vCount]; if IsPublishedProp(vDummyComponent,'Caption') then begin c := TRttiContext.Create; try z := (c.GetType(vDummyComponent.ClassInfo) as TRttiInstanceType); w := z.GetProperty('Caption'); if w <> nil then Values[vOffset, 1] := w.GetValue(vDummyComponent.ClassType).AsString ..... ..... .... .... I am getting all sorts of errors and any help will be greatly appreciated.

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  • Best point to overwrite the navigationBar property of navigationController

    - by flohei
    Hi there, I'm overwriting UINavigationController to replace the default navigationBar property with an instance of my own subclass of UINavigationBar. So I tried something like _navigationBar = [[SBNavigationBar alloc] init]; in my -initWithRootViewController:. But that didn't work out as I expected it. There's still the default navigationBar being displayed. So what's the best point to overwrite the navigationBar? Thanks in advance –f

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  • HierarchicalDataTemplate Distinct leaves

    - by miguel
    I have a set of data that is structured like this: ItemA.GroupA ItemB.GroupA ItemC.GroupB ItemD.GroupC I need to present the data in a WPF Tree View like this: GroupA --- ItemA --- ItemB GroupB --- ItemC GroupC --- ItemD What XAML can I use to group the leaves by distinct value? For instance, there could be multple items in the collection which are GroupA.ItemA, however, I only want to present the node and leaf once.

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  • When to use std::size_t?

    - by nhaa123
    Hi, I'm just wondering should I use std::size_t for loops and stuff instead of int? For instance: #include <cstdint int main() { for (std::size_t i = 0; i < 10; ++i) // std::size_t OK here? Or should I use, say, unsigned int instead? } In general, what is the the best practice regarding when to use std::size_t?

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  • I Can Not Use Session In Page _Load And I Got Bellow Error

    - by LostLord
    hi my dear friends .... why i got this error : (Object reference not set to an instance of an object.) when i put this code in my page_load.: protected void Page_Load(object sender, EventArgs e) { BackEndUtils.OverallLoader(); string Teststr = Session["Co_ID"].ToString(); } ========================================================================== this session is made when user logins to my web site and this session works in other areas... thanks for your attention

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  • Is there simple way how to join two RouteValueDictionary values to pass parameters to Html.ActionLin

    - by atagaew
    Hi. Look on my code that i created in a partial View: <% foreach (Customer customerInfo in Model.DataRows) {%> <tr> <td> <%=Html.ActionLink( customerInfo.FullName , ((string)ViewData["ActionNameForSelectedCustomer"]) , JoinParameters(customerInfo.id, (RouteValueDictionary) ViewData["AdditionalSelectionParameters"]) , null)%> </td> <td> <%=customerInfo.LegalGuardianName %> </td> <td> <%=customerInfo.HomePhone %> </td> <td> <%=customerInfo.CellPhone %> </td> </tr> <%}%> Here I'm building simple table that showing customer's details. As you may see, in each row, I'm trying to build a link that will redirect to another action. That action requires customerId and some additional parameters. Additional parameters are different for each page where this partial View is using. So, i decided to make Action methods to pass that additional parameters in the ViewData as RouteValueDictionary instance. Now, on the view i have a problem, i need to pass customerId and that RouteValueDictionary together into Html.ActionLink method. That makes me to figure out some way of how to combine all that params into one object (either object or new RouteValueDictionary instance) Because of the way the MVC does, i can't create create a method in the codebehind class (there is no codebihind in MVC) that will join that parameters. So, i used ugly way - inserted inline code: ...script runat="server"... private RouteValueDictionary JoinParameters(int customerId, RouteValueDictionary defaultValues) { RouteValueDictionary routeValueDictionary = new RouteValueDictionary(defaultValues); routeValueDictionary.Add("customerId", customerId); return routeValueDictionary; } ...script... This way is very ugly for me, because i hate to use inline code in the View part. My question is - is there any better way of how i can mix parameters passed from the action (in ViewData, TempData, other...) and the parameter from the view when building action links. May be i can build this link in other way ? Thanks!

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  • Clean up upon the kill signal

    - by Begui
    How do you handle clean up when the program receives a kill signal? For instance, there is an application I connect to that wants any third party app (my app) to send a finish command. What is the best say to send that finish command when my app has been destroyed with a kill -9?

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  • Using the standard Flash AS3 scrollbar class

    - by WebDevHobo
    Flash has a scrollbar class, documented here: http://help.adobe.com/en_US/AS3LCR/Flash_10.0/fl/controls/ScrollBar.html However, besides listing functions and variables, there's no real explanation of how to hook an instance of this class to a textfield. Everything I've tried either ends up in errors or the scrollbar not showing. The documentation lacks a clear way of how you should bind the textfield and the scrollbar toghether, and CS4 isn't providing any help either. Can someone explain, or link to an example of how scrollbars work with textfield?

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  • iphone facebook framework

    - by satyam
    i'm able to successfully integrate facebook into my iphone application. but just before publishing, it will show a dialog which is an instance of "FBStreamDialog". I'm only setting "userMessagePrompt" which is "Share the app with Facebook and follow the link to obtain the app" and "attachment" with "Share the app". When the app is run and when FBStreamDialog is shown, I'm seeing only "attachment" and not "userMessagePrompt". Why?

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  • Default value of a type

    - by viky
    For any given type i want to know its default value. In C#, there is a keyword called default for doing this like object obj = default(Decimal); but I have an instance of Type (called myType) and if I say this, object obj = default(myType); it doesn't work Is there any good way of doing this? I know that a huge switch block will work but thats not a good choice.

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  • code style for private methods in c#

    - by illdev
    I just found out, that it seems a common pattern to user UpperFirstLetterPascalCase() for private methods. I for myself, find this completely inconsistent with naming rules of private instance fields and variables and I find it difficult to read/debug, too. I would want to ask, why using a first upper letter for methods could be a better choice than a first lower (doThis())? Just out of curiosity...

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  • How many ways a java Program can end ?

    - by Frank
    I know use System.exit(0) can end a java program, for instance, if I have a JFrame window, it will close and end the program, but I wonder how many other ways, can it be closed and the program be ended ? Including when an error occurs, will the program be shut down and the JFrame be closed ?

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  • Python: how to inherite and override

    - by Guy
    Consider this situation: I get an object of type A which has the function f. I.e: class A: def f(): print 'in f' def h(): print 'in h' and I get an instance of this class but I want to override the f function but save the rest of the functionality of A. So what I was thinking was something of the sort: class B(A): .... def f(): print 'in B->f' and the usage would be: def main(a): b = B(a) b.f() #prints "in B->f" b.h() #print "in h" How do you do such a thing?

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  • nHibernate: limit the result set of a mapped collection

    - by HeavyWave
    How do you limit the result set of a mapped collection in nHibernate? For instance: Model.Items; will always return all the Items for the given Model. Is there any way to force it to return only, say, 20 Items without creating a specific query ? Something like Model.Items.SetMaxResults(20); In other words, I would like nHibernate to return IQueryable instead of a simple IList, when I access a collection.

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  • Changing label color based on current label color in iPhone dev

    - by Matt Thomas
    I am having trouble figuring out the if statement code for changing the color of a UI label based on the current color of the label. For instance, if the label color is currently red and the correct button is pressed, I want the label color to change to black. If the label color is black I want the label color to change to blue. Many thanks for any tips.

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  • Finding partial substrings within a string

    - by Peter Chang
    I have two strings which must be compared for similarity. The algorithm must be designed to find the maximal similarity. In this instance, the ordering matters, but intervening (or missing) characters do not. Edit distance cannot be used in this case for various reasons. The situation is basically as follows: string 1: ABCDEFG string 2: AFENBCDGRDLFG the resulting algorithm would find the substrings A, BCD, FG I currently have a recursive solution, but because this must be run on massive amounts of data, any improvements would be greatly appreciated

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  • Finding An image tag using the alt text

    - by MrJackV
    I would like to know if it was possible using Javascript to find an image tag by its alt text. For instance I have this tag: <img src="Myimage.jpg" alt="Myimage"> would there be a vay to abtain the tag by looking for the "Myimage" alt attribute?

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  • What's the workflow of Continuous Integration With Hudson?

    - by Satoru.Logic
    Hi, all. I am referred to Hudson today. I have heard about continuous integration before, but I have no idea what the heck is a ci-server. Hudson is really easy to install in Ubuntu and in several minutes I managed to set up an instance of it. But I don't quite understand the workflow of a ci-server, or how am I supposed to use it? Please tell me if you have experience about ci, thanks in advance.

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  • Returning a shared library symbol table

    - by joemoe
    For instance: void* sdl_library = dlopen("libSDL.so", RTLD_LAZY); void* initializer = dlsym(sdl_library,"SDL_Init"); Assuming no errors, initializer will point to the function SD_Init in the shared library libSDK.so. However this requires knowing the symbol "SDL_Init" exists. Is it possibly to query a library for all its symbols? Eg, in this case it would return SDL_Init, the function pointer, and any other symbols exported by libSDL.so.

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  • How to select records as columns in SQL

    - by Leigh
    Hi, I have two tables: tblSizes and tblColors. tblColors has columns called ColorName, ColorPrice and SizeID. There is one size to multiple colors. I need to write a query to select the size and all the colors (as columns) for a that size with the price of each size in its respective column. The colors must be returned as columns, for instance: SizeID : Width : Height : Red : Green : Blue 1---------220-----220----£15----£20-----£29 Hope this makes sense Thank you

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  • Move namespace declaration from payload to envelope on an axis created web service

    - by rmarimon
    I just created a web service client using axis and eclipse that does not work with my web service provider. The message created by the web service client looks like this: <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soapenv:Body> <enviarMensajeRequest xmlns="http://www.springframework.org/spring-ws/Imk-Zenkiu-Services"> <usuario>someuser</usuario> <clave>somepassword</clave> <mensaje>somemessage</mensaje> <contacto> <buzonSMS>somenumber</buzonSMS> <primerNombre>somefirstname</primerNombre> <primerApellido>somelastname</primerApellido> </contacto> </enviarMensajeRequest> </soapenv:Body> </soapenv:Envelope> I see nothing wrong with the message but my provider insists the message should be: <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:imk="http://www.springframework.org/spring-ws/Imk-Zenkiu-Services"> <soapenv:Body> <imk:enviarMensajeRequest> <imk:usuario>someuser</imk:usuario> <imk:clave>somepassword</imk:clave> <imk:mensaje>somemessage</imk:mensaje> <imk:contacto> <imk:buzonSMS>somenumber</imk:buzonSMS> <imk:primerNombre>somefirstname</imk:primerNombre> <imk:primerApellido>somelastname</imk:primerApellido> </imk:contacto> </imk:enviarMensajeRequest> </soapenv:Body> </soapenv:Envelope> Notice the namespace declaration moving from the enviarMensajeRequest to the soapenv:Envelope and the qualification with imk: on the parameters. I've tried many combinations on the process but my web service, wsdl and xml knowledge is very limited. The provider says that they can't help beyond telling me this. Any ideas? Perhaps a different framework that I can use to create the correct client.

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