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  • How to pass the values from one activity to previous activity

    - by Kumar
    Dear friends.. Can any one tell me how to pass the value from one screen to its previous screen. Consider the case.i m having two screen first screen with one Textview and button and the second activity have one edittext and button. If i click the first button then it has to move to second activity and here user has to type something in the textbox. If he press the button from the second screen then the values from the textbox should move to the first activity and that should be displayed in the first activity textview. regards, s.kumaran.

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  • Date and time picker in one view...

    - by Rahul Varma
    Hi guys, I wanted to know whether we can implement both date and time picker in one view... In iphone app you can pick both date and time through one view. But in android we have date picker and time picker seperately. So, is there any method by which i can get values of both date and time from one view???

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  • Apply function to one element of a list in Python

    - by user189637
    I'm looking for a concise and functional style way to apply a function to one element of a tuple and return the new tuple, in Python. For example, for the following input: inp = ("hello", "my", "friend") I would like to be able to get the following output: out = ("hello", "MY", "friend") I came up with two solutions which I'm not satisfied with. One uses a higher-order function. def apply_at(arr, func, i): return arr[0:i] + [func(arr[i])] + arr[i+1:] apply_at(inp, lambda x: x.upper(), 1) One uses list comprehensions (this one assumes the length of the tuple is known). [(a,b.upper(),c) for a,b,c in [inp]][0] Is there a better way? Thanks!

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  • How can I make hundreds of simultaneously running processes communicate with a database through one

    - by Olfan
    Long speech short: How can I make hundreds of simultaneously running processes communicate with a database through one or few permanent sessions? The whole story: I once built a number crunching engine that handles vast amounts of large data files by forking off one child after another giving each a small number of files to work on. File locking, progress monitoring and result propagation happen in an Oracle database which all (sub-)processes access at various times using an application-specific module which encapsulates DBI. This worked well at first, but now with higher volumes of input data, the number of database sessions (one per child, and they can be very short-lived) constantly being opened and closed is becoming an issue. I now want to centralise database access so that there are only one or few fixed database sessions which handle all database access for all the (sub-)processes. The presence of the database abstraction module should make the changes easy because the function calls in the worker instances can stay the same. My problem is that I cannot think of a suitable way to enhance said module in order to establish communication between all the processes and the database connector(s). I thought of message queueing, but couldn't come up with a way of connecting a large herd of requestors with one or few database connectors in a way so that bidirectional communication is possible (for collecting the query result). An asynchronous approach could help here in that all requests are written to the same queue and the database connector servicing the request will "call back" to submit the result. But my mind fails me in generating an image clear enough so that I can paint into code. Threading instead of forking might have given me an easier start, but this would now require massive changes to the code base that I'm not prepared to do to a live system. The more I think of it, the more the base idea looks like a pre-forked web server to me only that it doesn't serve web pages but database queries. Any ideas on what to dig into, and where? Sample (pseudo) code to inspire me, links to possibly related articles, ready solutions on CPAN maybe?

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  • WPF application in a one window

    - by lukas
    I would like to make an application in a one window using XAML. It should be like a slideshow with next and back button. One idea is to make 4 panels and have just one enable at the time. Is there any other way to do this? Like dynamic loading of other XAML? is it the BackgroundWorker mandatory to use with WPF (hence is DirectX rendered there's almost no GUI lags) ?

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  • In jquery how can I keep track of multiple ajax request called from one function

    - by binay
    I'm using jquery and in one function I'm calling multiple function which are doing different ajax request for example function contactForm(){ loadCountryList(); loadMyData(); checkUserType(); // doing my stuff } How can I know if all the ajax request are completed so that I start doing my stuff in the end? I don't want to call them one by one to minimize the request time. any suggestion will help me a lot.

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  • One Account with many users authentication in rails

    - by Cristian
    Which approach would you recommend to the following issue: My app needs to have an account with several users inputting tasks on the same account. Only one of the users (the one that opened the account) will have admin privileges. Im thinking on using Authlogic for authentication and CanCan for determining user privileges. The point is that I'd like the User that opened the Account to be admin by default being him the only one to be able to generate other Users for his account with a different privileges. Thanks, CD

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  • Not allowing next jqueryui.show() animation to start without finishing previous one

    - by Phonethics
    Im using jquery &jquery UI. $.each(data, function(count,item) { showItem(item); // Dont continue without showItem finishing }); function showItem(item) { $('#div-container').prepend(renderItem(item)); $("#div-container div.block:first").show('blind',{},500,function(){}); } Works, but when there are 3 items in data, it animates all 3 in one go. I need this done one-by-one. How do I tell .show() to execute the next show() after the previous one is completed ? Or do I specify this in each() ?

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  • Why C++ is (one of) the best language to learn at first [closed]

    - by AlexV
    C++ is one of the most used programming language in the world since like 25+ years. My first job as programmer was in C++ and I coded in C++ everyday for nearly 4 years. Now I do mostly PHP, but I will forever cherish this C++ background. C++ has helped me understand many "under the hood" features/behaviors/restrictions of many other (and different) programming languages like PHP and Delphi. I'm a full time programmer for 6+ years now and since I have a quite varied programming background I often get questions by "newbies" as where to start to become a "good" programmer. I think C++ is one of the best language to start with because it gives you a real usefull experience that will last and will teach you how things work under the hood. It's not the easier one to learn for a newbie, but in my opinion it's the one who will reward the most in long term. I would like to know your opinion on this matter to add to my arguments when I guide "newbies". After this introduction, here's my question : Why C++ is for you (one of) the best language to learn at first. Since it's subjective, I've marked this question as community wiki.

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  • which one of these is an example of coercion

    - by user1890210
    I have been pondering a multiple choice question on coercion. One of the 4 examples a,b,c or d is an example of coercion. I narrowed it down to A or B. But I am having a problem choosing between the two. Cane someone please explain why one is coercion and one isn't. A) string s="tomat"; char c='o'; s=s+c; I thought A could be correct because we have two different types, character and string, being added. Meaning that c is promoted to string, hence coercion. B) double x=1.0; double y=2.0; int i=(int)(x+y); I also thought B was the correct answer because the double (x+y) is being turned into a int to be placed in i. But I thought this could be wrong because its being done actively through use of (int) rather than passively such as "int i = x + y" I'll list the other two options, even though I believe that neither one is the correct answer C) char A=0x20; A = A << 1 | 0x01; cout << A << endl; D) double x=1.0; double y=x+1; return 0; I'm not just looking for an answer, but an explanation. I have read tons of things on coercion and A and B both look like the right answer. So why is one correct and the other not.

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  • ODBC - multiple connections from one app to the same data source

    - by Marcin K
    I vaguely remember reading somewhere (in MSDN ODBC documentation?) that one application cannot make more than one connection to a single data source. It seemed to me that I need one connection that all the threads of the application will have to share. I was trying to look this information up, but I can't seem to find it anymore. Does anyone know/remember how this works? It all might become a problem in our app, since some of its threads will dynamically connect to data sources of their choice. I don't want to see random connection errors if two of them will connect at the same time to one source, so I wanted to double check this info.

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  • switching between one and two displays in visual studio

    - by WebDude
    Most of the time I work Visual Studio with two monitors. I setup my Visual Studio to sit nicely across both monitors with code on the one side and property windows etc. on the other. However, occasionally I need to remove into my work station from home where I only have one monitor. What ends up happening is I have to re-setup my entire workspace to be used on one monitor, and when I get back to my work station I have to undo this again to get to my optimal 2 monitor environment. Is there a way to save some set layouts in Visual Studio so I could quickly switch back and forward? Example: One Monitor Layout versus Two Monito Layout?

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  • [jQuery] Several buttons on one form calling same function

    - by user198003
    hi all, trying to develop web form using jquery. all i need is to have several (don't know how many) buttons on one form. all of those buttons have to call one same function, and to pass one parameter to that function. that function have to do some post method, but i can handle it. so, my main problem is that i don't know how to develop JS that will call specific jquery function. can you help me with this?

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  • Intellij UML diagram does not show one to many relationships

    - by Calm Storm
    I am trying to follow http://www.jetbrains.com/idea/features/uml_class_diagram.html I have a few classes so when I do Ctrl + Alt + U I only see all classes and just Extends relationships. Please note that I have set the "Diagrams" options in my settings to show one to many etc. I do not see One to One, One to Many relationships at all ? I have used JPA OneToOne Annotations and they dont turn up at all? Pressing Ctrl Shift F12 does not do anything? Can someone please explain?

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  • Forcing LINQ to SQL to make one single call for all child rows

    - by zaph0d
    Let say I have a method (example taken from another post): public IQueryable<CityBlock> GetCityBlocks(){ var results = from o in db.city_blocks let buildings = GetBuildingsOnBlock(o.block_id) //returns Iqueryable select new CityBlock { BuildingsOnBlock = buildings, BlockOwner = o.block_owner }; return results; } In the calling method I add Skip() and Take() methods plus some filtering and then do a ToList(). The trouble is that I am getting dozens of database calls - one for all the city blocks and then a separate one for each building. Is there a way that I can refactor this code to just make two calls: one for the city blocks and one for all the buildings

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  • from Hibernate hbm to JPA annotations, a challenging one

    - by nodje
    Hi, I've been struggling with this one for quite some time already. It appears a lot less simple than I thought it'd be: This is included in the "COTISATION" table mapping an uses SynchroDataType, extending Hibernate UserType. This works really great, and I can't find a way to translate it to proper JPA, while keeping the convenience of it. Does someone has a solution for that kind of one-to-one mapping? cheers

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  • Build common interface for two applications(one is in .asp, other in java)

    - by govardhan
    We have two applications. One application in .asp and second application in java. we want to build interface for universal authentication, so that one can access the other application once signed into one application. Both applications are using SQL database, but one is written in .ASP hosted on Windows server while the other is in JAVA hosted on a Linux server. The applications are currently resided on two different servers. requirements: 1)The end user are most likely to access the applications through .ASP first, then reach the 2nd application more like "back office" management system. 2)he JAVA application currently works well with IE web browser, but not very smooth with other browsers such as Firefox. Would like to make the application to be more compatible with other browsers. Please help me, its very important to me. Thanks in advance!

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  • Entity Relationships - Can a weak entity take part in a 'one to many' relationship as the 'one'

    - by jonos
    Hi, With the following entity relationship structure I'm struggling to figure out if the relationship between the LOAN and ITEM is valid? The weak entity of Loan uses a partial key of 'loan_dateLeant' and the primary keys from CUSTOMER and ITEM to form its primary key. However LOAN has a 'one to many' relationship with ITEM as a loan can consist of more than one item. But surely this means that if more than one item is loaned, then the loan record will have two item_id values for part of its primary key?

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  • Several buttons on one form calling same function

    - by user198003
    hi all, trying to develop web form using jquery. all i need is to have several (don't know how many) buttons on one form. all of those buttons have to call one same function, and to pass one parameter to that function. that function have to do some post method, but i can handle it. so, my main problem is that i don't know how to develop JS that will call specific jquery function. can you help me with this?

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  • One on One table relation - is it harmful to keep relation in both tables?

    - by EBAGHAKI
    I have 2 tables that their rows have one on one relation.. For you to understand the situation, suppose there is one table with user informations and there is another table that contains a very specific informations and each user can only link to one these specific kind of informations ( suppose second table as characters ) And that character can only assign to the user who grabs it, Is it against the rules of designing clean databases to hold the relation key in both tables? User Table: user_id, name, age, character_id Character Table: character_id, shape, user_id I have to do it for performance, how do you think about it?

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