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  • What is branched in a repository?

    - by Peter M
    Ok I hope that this will end up sounding like a reasonable question. From what I understand of subversion if you have a repo that contains multiple projects, then you can branch individual projects within that repo (see SVN Red book - Using Branches) However what I don't quite follow is what happens when you create a branch in one of the distributed systems (Git, Hg, Bazaar - I don't think it matters which one). Can you branch just a sub-directory of the repo, or when you create the branch are you branching the entire repo? This question is part of a larger one that I posted on superuser (choice and setup of version control) and has come about as I am trying to figure out how to best version control a large hierarchal layout of independent projects. It may be that for distributed systems that what I would like to do is best handled by a sub-project mechanism of some sort - but again that is something I am not clear on although I have heard the term mentioned in regards to git.

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  • Exporting winform data to .txt file

    - by EvanRyan
    I have a winform with two data grids, and multiple text boxes. I want to give the user the option to export this data to a text document in a location of their choice on their drive. I also want the text document to be pre-formatted, and the values from the text boxes and datagrids to be plugged in. Is it possible to pre-format a txt document using StreamWriter? And how to I go about giving the user the option of where to save this exported file?

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  • Does normalization really hurt performance in high traffic sites?

    - by Luke101
    I am designing a database and I would like to normalize the database. I one query I will joining about 30-40 tables. Will this hurt the website performance if it ever becomes extremely popular? This will be the main query and it will be getting called 50% of the time. The other queries I will be joining about 2 tables. I have a choice right now to normalize or not to normalize but if the normalization becomes a problem in the future i may have to rewrite 40% of the software and it may take me a long time. Does normalization really hurt in this case? Should I denormalize now while I have the time?

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  • Knowing the fundamentals of Java what is the right approach to learn Groovy?

    - by Liuh
    As my question already implies I want to learn a new language and have read several articles about groovy and its more pragmatic syntax. SO I have choosen Groovy as the language of my choice. What is a good way to learn a new language like Groovy when I already know the fundamentals of Java. When I understand correctly Groovy will be running in the Java Virtual Machine and allows me to always rely on what I know from Java when I don't know how to solve the problem in Groovy. I am looking for hints on how to organize a learning track to learn this language. I found that page explaining the differences: http://groovy.codehaus.org/Differences+from+Java But what I am looking for is more a tutorial where I can get through and get introduced to the differences.

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  • Add code before initialization of units in Delphi

    - by Alan Clark
    Is there a place where I can add code that will be executed before unit initialization? The reason I want to do this is I need to change the DecimalSeparator, this has to be done before the initialization of some units. I have put it in the project source, before Application.Initialize but it is too late by then. As I see it the only choice I have is to put it in the initialization of the unit that needs the DecimalSeparator to be changed, is this the case? Thanks in advance for any advice.

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  • producing a typewriter-like effect

    - by Tony Ennis
    Android newb here. Please use small words :-) I'd like to simulate typewriter output on my Android. The output being displayed is generated by a game and is somewhat freeform. The effect I want to see individual characters appear at a rate of about 6 characters a second. When a 'carriage return' is seen, I'd like to insert a delay then resume typing on the left. What are some suggestions on views? Would the view of choice for this be a TextView? Even that seems like overkill for this read-only coarsely scrolling output. I saw something on this thread about an AsyncTask. That looks useful. Perhaps my game will write to some manner of buffer, and a subclass of AsyncTask will pull characters out every .15 seconds or so, add them to the TextView, then invalidate() the TextView? Sound like a plan?

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  • Creating controls in ASP with dynamic IDs

    - by mattdell
    Hi, I'm creating a chat widget that will be dropped into CommunityServer. The widget works great, but I just discovered that if I drop two of these widgets onto the same page, only one of them works! And I'm quite certain the reason is because the chat window is defined in ASP, and now there are two instances of the chat window, with the same ID, on the same page. I am doing this with straight ASP & Javascript (not by choice), so my chat window is defined as: <telerik:RadListBox ID="rlbMessages" runat="server" > (don't mind that it's a telerik control). So I was hoping I could do something like this: <telerik:RadListBox ID="<%= 'rlbMessages' + chatRoomID %>" runat="server" > But from what I've gathered, apparently you can't assign ID's this way? What is the alternative?

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  • Java or Python distributed compute job (on a student budget)?

    - by midget_sadhu
    I have a large dataset (c. 40G) that I want to use for some NLP (largely embarrassingly parallel) over a couple of computers in the lab, to which i do not have root access, and only 1G of user space. I experimented with hadoop, but of course this was dead in the water-- the data is stored on an external usb hard drive, and i cant load it on to the dfs because of the 1G user space cap. I have been looking into a couple of python based options (as I'd rather use NLTK instead of Java's lingpipe if I can help it), and it seems distributed compute options look like: Ipython DISCO After my hadoop experience, i am trying to make sure i try and make an informed choice -- any help on what might be more appropriate would be greatly appreciated. Amazon's EC2 etc not really an option, as i have next to no budget.

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  • Given an even number of vertices, how to find an optimum set of pairs based on proximity?

    - by Alex Z
    The problem: We have a set of n vertices in 3D euclidean space, and there is an even number of these vertices. We want to pair them up based on their proximity. In other words, we'd like to be able to find a set of vertex pairs, where the vertices in each pair are as close as possible together. We want to minimise sacrificing the proximity between the vertices of any other pairs as much as possible in doing this. I am not looking for the most optimal solution (if it even strictly exists/can be done), just a reasonable one that can be computed relatively quickly. A relatively awful brute force approach involves choosing a vertex and looping through the rest to find its nearest neighbor and then repeating until there are none left. Of course as we near the end of the list the closest vertex could be very far away, but it is the only choice, therefore this can fail badly on the third point above.

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  • What should I do in order to be able to work with maven + eclipse + wicket + hibernate + spring in M

    - by spderosso
    I want to create a web app that will use wicket, hibernate and spring frameworks. My IDE of choice is Eclipse, I am using maven for the .war generation and I am running Mac OS. What steps should I follow to correctly install and configure all the tools so as to have a project running that relies on these 3 frameworks. I was able to successfully set up wicket but I am having trouble for setting up hibernate and spring. I went through multiple tutorials but I still couldn't find the solution. Thanks!

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  • Is it immoral to put a captcha on a login form?

    - by azkotoki
    In a recent project I put a captcha test on a login form, in order to stop possible brute force attacks. The immediate reaction of other coworkers was a request to remove it, saying that it was inapropiate for that purpose, and that it was quite exotic to see a captcha in that place. I've seen captcha images on signup, contact, password recovery forms, etc. So I personally don't see inapropiate to put a captcha also on a place like that. Well, it obviously burns down usability a little bit, but it's a matter of time and getting used to it. With the lack of a captcha test, one would have to put some sort of blacklist / account locking mechanism, which also has some drawbacks. Is it a good choice for you? Am I getting somewhat captcha-aholic and need some sort of group therapy? Thanks in advance.

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  • Delphi: How to call a method when i click a control?

    - by Ian Boyd
    i have a method: procedure Frob(Sender: TObject); that i want to call when i click a menu item. The method comes to me though an interface: animal: IAnimal; IAnimal = interface procedure Frob(Sender: TObject); end; The question revolves around what to assign to the OnClick event handler of a menu item (i.e. control): var animal: IAnimal; ... begin ... menuItem := TMenuItem.Create(FileMenu) menuItem.Caption := 'Click me!'; menuItem.OnClick := <-------- what to do ... end; The obvious choice, my first attempt, and the wrong answer is: menuItem.OnClick := animal.Frob; So how can i call a method when user clicks a control? See also Why doesn't it work?

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  • Is memcached a dinosaur in comparison to Redis?

    - by Industrial
    Hi everyone, I have worked quite a bit with memcached the last weeks and just found out about Redis. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach: Redis can be used as a memcached on steroids because is as fast as memcached but with a number of features more. Like memcached, Redis also supports setting timeouts to keys so that this key will be automatically removed when a given amount of time passes. This sounds amazing. I'd also found this page with benchmarks: http://www.ruturaj.net/redis-memcached-tokyo-tyrant-mysql-comparison So, honestly - Is memcache really that old dinousaur that is a bad choice from a performance perspective when compared to this newcomer called Redis? I haven't heard lot about Redis previously, thereby the approach for my question!

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  • No recent books on MPI: is it dying?

    - by Jono
    I've never used Message Passing Interface (MPI), but I've heard its name thrown about, most recently with Windows HPC Server. I had a quick look on amazon to see if there were any books on it, but they're all dated around 7 or more years ago. Is MPI still a valid technology choice for new applications, or has it been largely superceded by other distributed programming alternatives (e.g. DataSynapse GridServer)? As it's not really an implementation, but rather a standard, what is the likelihood (assuming it's not dead) that learning it will result in better design of distributed programming systems? Is there something else I should be looking at instead?

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  • Is Python good for highload web projects?

    - by Vitali Fokin
    Hello! I decidet to start my own web project. It should be highload project, and I can't decide which technologies should I use. I'm good in ASP.NET MVC, but I like languages like Python more than C#. I read a lot about Python and Django/Pylons/etc but I didn't find any good examples of highload projects on python. So, the question is: Is Python good for highload project? Is it enough fast? And if it is, are python frameworks like django/pylons/etc good for this? Or asp.net mvc will be better choice? PS, I'm not interesting in Java, Ruby and PHP :) So, I'm choosing only between Python + django/pylons/etc and asp.net mvc. Thanks in advance. Please, don't make holywars :)

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  • How to encrypt data in php using Public/Private keys?

    - by Xeoncross
    I have a small string of some data (less than 1kb) that I would like to have user agents pass to other sites when they are sent from my site. In order for the other sites to verify that I was the one that created the string I though of two options. The server pings me back to confirm (like paypal, openid, etc..) I use public/private keys to prove I sent the message (like PGP, DKIM, etc..) I don't want to setup HMAC because that would mean I have to use custom keys for each site which would be a pain. Out of those two choices it seems that #2 would save on bandwidth which makes it seem like a better choice. So how can you setup public/private key cryptography using PHP and are there any downsides?

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  • how to get game sound or how to create for iPhone

    - by iPhone Fun
    Hi all, I am having problem of getting sound. i.e. how to get good sounds for our iPhone games? or how to make some good quality sounds for iPhone game applications so that the applications will become some more attractive? There are many sites like www.freesound.org , but I am not able to get good sounds as per my choice. If any one know from where we can get good sounds or how to make such things please help me. As this will be help full to all for using sounds in the applications of iPhone or other. Thanks in advance

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  • Android use of an string array on another method

    - by spagi
    Hi all. Im trying to make an activity that has a multiple choice dialog after you push a button. In there you select from a list of things. But these things are received from a web method before the dialog appears. So I create a string array after I receive them inside the onCreate to initialise it there with the correct size. But my dialog method then cant get the array because propably its out of its scope. My code looks like this @Override protected Dialog onCreateDialog(int id) //Here is where the array is loaded to the multiple select dialog etc @Override public void onCreate(Bundle savedInstanceState) //Here is where i initialise the array and get its contents etc I cant initialise my array when the class starts because I dont know its size yet. This has to do something with the scopes of my variables and I am pretty confused

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  • Controlling Windows Media Player through PHP / batch files

    - by Duroth
    I'm currently writing a tiny webapp for my HTPC (actually, a PC serving as both a media player and web- / fileserver) that will allow me to remotely control the playing of audio, without having to turn on my TV just to switch songs. I'm using Windows Media Player as my audio player of choice, and I thought I could control it through PHP's COM Class. Unfortunately, I've not been able to find any documentation or examples on controlling WMP through this interface. Can anyone point me in the right direction here? A second (and much less preferable) solution would be to use PHP's exec() call to start batch files that, in turn, control WMP.

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  • Searching for simple variable names like 'c' or 'x' in Emacs.

    - by wpeters
    I often wish to search for variables that are simply called 'c' or 'count'. For example int c, count; Unfortunately when I use an incremental search for 'c' or 'count' I get a lot of unnecessary hits like the 'c' in 'choice', or the 'count' in 'wordcount' which do not interest me. I know Emacs can do i-searches with regular expressions but I don't know the correct regular expression needed to match just 'c' and 'count'. These words are often surrounded by any number of white spaces. Anyone know the regex I can use to narrow my search?

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  • A programming language for teaching data structures and algorithms with? [closed]

    - by Andreas Grech
    Possible Duplicate: Choice of programming language for learning data structures and algorithms Teachers have different opinions on what programming language they would choose to teach data structures and algorithms with. Some would prefer a lower level language such as C because it allows the student to learn more about what goes on beyond the abstractions in terms of memory allocation and deallocation and pointers and pointer arithmetic. On the other hand, others would say that they would prefer a higher level language like Java because it allows the student to learn more about the concepts of the structures and the algorithm design rather than 'waste time' and fiddle around with memory segmentation faults and all the blunders that come with languages where memory management is manual. What is your take on this issue? And also, please post any references you may know of that also discuss this argument.

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  • How to "select file" with Python script? . Google App Engine . Python .

    - by draconisthe0ry
    I'm trying to create an online application for a python function i have created. in my script, i input the path of my file for the computer (input_path = '/users/user/desktop/input.txt') but i'm not sure how to go about this using Google App Engine . I have the choice between 3 templates: flask, django, and bottle . I really do believe this question is relevant for people transitioning from scripts to web-based applications. Do I need to incorporate GUI stuff from Tkinter or something? There has to be a way to simply select a file to use for the input path in an interactive way using python scripts

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  • PHP save a page then redirect to previous page(ajax)

    - by Shiro
    Dear all, I would like to ask for how to redirect to previous page (ajax paging). Example, Let's say currently I am in page 5, then I click on one record, after I edit it, I would like to go back to that page 5 not page 1. The problem is my paging is using ajax, http://domain/photo/#5 I try to use $_SERVER[http_referer], but I only get http://domain/photo , I not able to get # and the value. What is the best way to redirect back to the previous paging. My last choice is using $_SESSION. Hope I can get better answer here. Thx.

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  • What are some Servlet Container pros and cons for a Solr installation?

    - by danieltalsky
    The SolrInstall wiki page lists seven different server / Servlet Containers compatible with Solr: Tomcat Jetty Resin JBoss WebSphere Weblogic Glassfish I'm sure that "best" is subjective, so I'll just say my criteria are: easiest to set up, best for search performance with a smallish, infrequently-updated dataset, and with the fewest number of gotchas. Jetty and Tomcat both have apt-get solr packages, so they're clearly the frontrunners for some. Jetty is used in the demo install, but there's some notes that Jetty has some difficulties handling Unicode in some cases. Tomcat is a common choice but my understanding is that it's not as lightweight and has a lot of features not needed by Solr. Is it worth considering any of the others? Are there some important pro's and cons I should be aware of?

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  • has anyone tried designing a webpage for psp?

    - by lock
    erm im trying to make a personal bible for my psp (i tried googling but the only bible version i've seen on my skimming is on KJV and im trying to make mine have 3 versions namely TNIV, NLT and Amplified Bible) so my only solution was to make on for myself and my approach was to save an html file on my mem-stick and open it up through the console's browser my concerns are: 1. how does the psp browser handle css and javascript? 2. is there a doctype declaration specifically designed for the psp browser? 3. can i use any local database to store my texts for easier query or do i have no choice but rely on static text files? 4. is there anyone in SO who have experienced developing a page for this console and can he/she give me some tips and advice? thanks much in advance for your responses.. :)

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