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  • Why string.Replace("X","Y") works only when assigned to new string?

    - by Petr
    Hi, I guess it has to do something with string being a reference type but I dont get why simply string.Replace("X","Y") does not work? Why I need to do `string A=stringB.Replace("X","Y") I thought it is just a method to be done on specified instance? Thanks for explanation EDIT: Thank you so far. I extend my question Why "b+="FFF"works but the b.replace is not?

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  • insertion in the same row for all activities

    - by Utman Alami
    i am here to ask for help again, i created one database for all activities, the problem i have is that the insertion in every activity comes in with new row, but that's not what i want, what i am looking for is in the same row in each activity insert the columns that contains. i already looked for solution here, they are speaking about static reference but i don't know how to do it! so, is there any ideas ? static DBAdapter db = new DBAdapter();

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  • Is there image phase correlation libraries available for Python?

    - by kamasudra
    A project that involves image processing, i.e. to calculate the angular shift of the same image when shifted by a medium of certain Refractive Index. We have to build an app that correlates the 2 images (phase/2D correlation?) and then plot using Chaco and Mayavi (2 libraries in Python). Is there any other existing template software (FOSS) that we can base our app on, or use it as a reference?

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  • Mef, passing parameters to a module

    - by Flex_Addicted
    Hi guys, I'm studying MEF and I'm not able to resolve a problem. I have a main application, called MainMEF, and a simple module, called SimpleModule. This one consists of a single UserControl which is loaded dinamically. When MainMEF starts up, I would be able to pass to the module a reference to main application contained into MainMEF. How could I fix this? Thanks in advance.

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  • Overload with different return type in java?

    - by nunos
    So, I am just starting Java and, even though I have looked in some question about it here at stackoverflow.com and elsewhere, haven't been able to find a straightforward answer to why isn't possible to overload a function just by changing the return type. Why is it so? Will that provably change in a future version of Java? By the way, just for reference, is this possible in C++? Thanks.

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  • How to dispose BackgroundWorkers the right way

    - by radbyx
    I've got a Windows Service that runs BackgroundWorker's, and I'm wondering if I'm doing the right thing when I stop my Windows Service. Is it enough to: Let the BackgroundWorker1_DoWork method complete (I have a while loop in it now, doing some tasks) Set the variable that holds the reference to the BackgroundWorker, to null Is there some kind of Dispose() method I need to call (In the same way the Timer class has Timer.Dispose();)?

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  • best way to implement a deck for a card game in python

    - by matt1024
    What is the best way to store the cards and suits in python so that I can hold a reference to these values in another variable? For example, if I have a list called hand (cards in players hand), how could I hold values that could refer to the names of suits and values of specific cards, and how would these names and values of suits and cards be stored?

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  • Using Joins vs Entity associations

    - by shivesh
    I am learning Entity framework and linq-to-entities. It's possible to get cross values from multiple tables using JOINS (join keyword) or using the navigation fields ( associations) in which case the framework knows how to reference the cross data. My question is what to use when?

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  • Referencing An Object From ThisWorkbook

    - by Soo
    I need to populate several comboboxes in an Excel sheet upon loading it. I have the Workbook_Open() event set up on my ThisWorkbook code sheet in my VBA Editor. Now that the code isn't in my Sheet1 code sheet in my VBA Editor, the following code doesn't work: ComboBox.AddItem "hulkSMAASH!" How can I reference this combobox from my ThisWorkbook code sheet in my VBA Editor?

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  • Trimming lists using a loop

    - by Vishal
    I have few lists like: a = [1, 2, 3, 4, 5] b = [4, 6, 5, 9, 2] c = [4, 7, 9, 1, 2] I want to trim all of them using a loop, instead of doing as below: a[-2:] b[-2:] c[-2:] I tried but got confused with pass by value or pass by reference fundamentals, looked into other questions as well but no help. Thanks

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  • distinction between using .text and .value in VBA access

    - by every_answer_gets_a_point
    i am passing the textbox1.text values into a query and sometimes into a string sometimes i say this: dim combor1 as string combor1 = comboReason1.Text how do i know when i should put combor1=comboreason1.value ?? also why do i need to set focus for a control to reference its property? that doesn't make sense to me also when i set combor4 = comboReason4.Value and the .value is null, then i get an error about invalid use of null please help!

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  • Visual Studio 2008 - Is it possible for two projects to share common classes?

    - by John M
    In Visual Studio 2008 I know its possible to have one solution with two (or more) projects. Is it possible OR How is it possible for the projects to share common class files? For example - Project 1 has a log file handling class. Can Project 2 reference it? My hope is to increase code re-use and avoid two copies of the same thing that need to be maintained. The target is Winforms C# (3.5)

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  • generating thumbnail image for video

    - by George2
    Hello everyone, I am using VSTS 2008 + C# + .Net 3.5 on Windows 7. I want to use Expression Encoder 3 to generate thumbnail image for video (wmv format) every 30 seconds -- e.g. for a 5 minutes video, there will be 10 thumbnails which reflects video at the time of 0 second, 30 second, 1 minute, 1 minute and 30 seconds, etc. Any reference code? thanks in advance, George

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  • JS regular expression to find a substring surrounded by double quotes

    - by 2619
    I need to find a substring surrounded by double quotes, for example, like "test", "te\"st" or "", but not """ neither "\". To achieve this, which is the best way to go for it in the following 1) /".*"/g 2) /"[^"\\]*(?:\\[\S\s][^"\\]*)*"/g 3) /"(?:\\?[\S\s])*?"/g 4) /"([^"\\]*("|\\[\S\s]))+/g I was asked this question yesterday during an interview, and would like to know the answer for future reference.

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