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• C++ online RPG game

  - by David

  So I've been learning C++ and SDL to make some basic 2d games. I want to create a game sort of like World of Warcraft but a 2D version. I want it to be online and use a database or something to start data like amount of Gold, HP, etc. I was wondering though, if I do this in SDL, would it still work online or would the user have to download SDL themselves to play? I just want a game like this but be able to play it with some friends, just for learning purposes you know. I was also looking at DirectX because everyone has that on windows pretty much. Anyways much help is appreciated, thanks!

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• Agile version control?

  - by Paul Dixon

  I'm trying to work out a good method to manage code changes on a large project with multiple teams. We use subversion at the moment, but I want more flexibility in building a new release than I seem to be able to get with subversion. Here's roughly I want: for each developer to create easily identifiable patches for the project. Each patch delivers a complete user story (a releasable feature or fix). It might encompass many changes to many files. developers are able to easily apply and remove their own and other patches to facilitate testing release manager selects the patches to be used in the next release into a new branch branch is tested, fixes merged in, and ultimately merged into live teams can then pull these changes back down into their sandboxes. I'm looking at stacked git as a way of achieving this, but what other tools or techniques can deliver this sort of workflow?

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• Accessing subclass members from a superclass pointer C++

  - by Dr. Monkey

  I have an array of custom class Student objects. CourseStudent and ResearchStudent both inherit from Student, and all the instances of Student are one or the other of these. I have a function to go through the array, determine the subtype of each Student, then call subtype-specific member functions on them. The problem is, because these functions are not overloaded, they are not found in Student, so the compiler kicks up a fuss. If I have a pointer to Student, is there a way to get a pointer to the subtype of that Student? Would I need to make some sort of fake cast here to get around the compile-time error?

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• Most efficient way to fetch and output Content with 2-Level Comments?

  - by awegawef

  I have some content with up to 2-levels of replies. I am wondering what the most efficient way to fetch and output the replies. I should note that I am planning on storing the comments with fields content_id and reply_to, where reply_to refers to which comment it is in reply to (if any). Any criticism on this design is welcome. In pseudo-code (ish), my first attempt would be: # in outputting content CONTENT_ID all_comments = fetch all comments where content_id == CONTENT_ID root_comments = filter all_comments with reply_to == None children_comments = filter all_comments with reply_to != None output_comments = list() for each root_comment children = filter children_comments, reply_to == root_comment.id output_coments.append( (root_comment, children) ) send output_comments to template Is this the best way to do this? Thanks in advance. Edit: On second thought, I'll want to preserve date-order on the comments, so I'll have to do this a bit differently, or at least just sort the comments afterward.

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• How do I splice into a list outside of a macro in Common Lisp?

  - by derefed

  Say I have a function foo: (defun foo (x y &rest args) ...) And I later want to wrap it with a function bar: (defun bar (x &rest args) (foo x 100 args)) Assume bar was then called like this: (bar 50 1 2 3) With this setup, args is a list within the body of bar that holds the trailing parameters, so when I pass it to foo, instead of getting the equivalent of (foo 50 100 1 2 3) I of course get (foo 50 100 '(1 2 3)). If these were macros, I would use `(foo ,x 100 ,@args) within the body of bar to splice args into the function call. ,@ only works inside a backtick-quoted list, however. How can I do this same sort of splicing within a regular function?

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• Perl standard input with argument inside Bash

  - by neversaint

  I want to have such pipe in bash #! /usr/bin/bash cut -f1,2 file1.txt | myperl.pl foo | sort -u Now in myperl.pl it has content like this my $argv = $ARG[0] || "foo"; while (<>) { chomp; if ($argv eq "foo") { # do something with $_ } else { # do another } } But why the Perl script can't recognize the parameter passed through bash? Namely the code break with this message: Can't open foo: No such file or directory at myperl.pl line 15. What the right way to do it so that my Perl script can receive standard input and parameter at the same time?

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• PHP readdir() not returning files in alphabetical order

  - by Buggabill

  I am reading through a directory with some pictures and such using a pretty simple implementation of readdir() like the following: if ($handle = opendir($path)) { while (false !== ($szFilename = readdir($handle))) { if ($szFilename[0] !== '.') { if (is_file($path.$szFilename)) { // do stuff } } } } The problem that I am having is that the files are not being read in alphabetical order as the docs for readdir() state: Returns the filename of the next file from the directory. The filenames are returned in the order in which they are stored by the filesystem. Another weird thing is that, on the local testing server, the same code works great. This is running on a server using the LAMP stack in both cases. I know that I can build an array and just sort it, but I was wondering if I was missing something in what I was doing. Thanks for any insight!

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• Err Web Service?

  - by j-t-s

  Hi All I am trying to implement a feature. But I've never had anything to do with "Web Services" before, other than using them. I have a desktop application, and I want that application to be able to sort of "post" some information (i.e. email address, username, user-selected options (just plain text) etc) to an application or "web service" on my ASP.NET web server. Can somebody please guide me in the right direction? How would I accomplish this? Thank you :) Jason

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• [LINQ noob] Please help me convert this Python 3.x snippet to .net LINQ.

  - by Hamish Grubijan

  I want to sort elements of a HashSet<string> and join them by a ; character. Python interpreter version: >>> st = {'jhg', 'uywer', 'nbcm', 'utr'} >>> strng = ';'.join(sorted(s)) >>> strng 'ASD;anmbh;ashgg;jhghjg' C# signature of a method I seek: private string getVersionsSorted(HashSet<string> versions); I can do this without using Linq, but I really want to learn it better. Many thanks!

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• How do I implement a DataGrid with an MVVM approach.

  - by Fred

  Hi, I'd like to implement a sort of Addressbook/Contactbook using a Datagrid (or a List) and the MVVM pattern. Something like in Outlook/Thunderbird, where you've a list of your contacts displayed with a 2-3 main fields (name surname for example), and when you double-click a contact, then you get a new modal box that displays all the details of this specific contact. Since a couple of weeks/months, I'm reading a lot of stuff about MVVM pattern on the net, but somehow, I get confused. Until now, I could find any sample like this. (perhaps, I searched wrong?) How could I organize such an application? Thx in advance for your help.

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• Call a JavaScript function in a Google Chrome window from a vb.net program

  - by user1464827

  I am having a real problem with this. I want to know if it is possible to run/call a javascript function in a Google Chrome web browser window from a VB.net application. The scenario is that i want to monitor the pc activity (which i know how to) and then if a certain event is met (for example, high ram usage) then it calls a JavaScript function in a Google Chrome web browser window so the website is updated. Sort of like a bridge. The only bit it need to know is the vb.net code for how to access a chrome window and invoke a javascript function if its possible. I assume i will need to use process handlers? Any help is appreciated.

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• Whats the best way to implement a streaming quotes page?

  - by schar

  I have a webservice that gives me the live stock quotes. I need to hit the webservice and update the page every 10 seconds or so. what is the best way to implement this using .NET and AJAX? I am looking for tips in the following lines: How to implement the end ASPX page to refresh the content on a timeout event? Should i just implement the front end using custom html calling the aspx page using xmlhttp? sort of old style asp code. any ideas would be appreciated. sChar

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• Accented character replacement for search then reinserted afterwards

  - by user314573

  Basically my issue is that users would like to search for a french word that has accented characters but without typing in the accented characters and then have the actual accented word appeared highlighted if found... So for example they would type in "declare" but in the result sets it would look like "déclare" and if found "déclare" would be highlighted. My first thought was to just simply replace the characters with a regex but then I remembered that I would need to re-insert the replaced characters after the search... I was thinking of then using some sort of character map that would track position and the character so that when the search was finshed I could put the result set back to the way it was. This seems a little brute force to me and I was wondering if anyone had a better alternative? I'm using Visual Studio 2005 with this app. Any advice would be much appreciated! Thanks

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• Can i configure emacs to use gdb like a graphical debugger?

  - by Joey Carson

  I'm pretty sure that this how other IDE's do it, e.g. on windows eclipse uses the output of gdb from MinGW (the windows port of GNU toolchain) to map where execution is in the source code and what values variables hold, etc. I'm stuck using gdb via a script that prepares our application in a chroot and does some other bootstrap for debug purposes. Once the script starts moving, the output is all gdb. Is there any way that I can configure emacs so that it will use gdb's output and allow for a sort of graphical debugger, comparable to that of eclipse or ms visual studio?

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• How would I create a VIM or Vi command to delete all text after a certain character for every line i

  - by Jason Down

  Scenario: I have a text file that has pipe (as in the "|" character) delimited data. Each field of data in the pipe delimited fields can be of variable length, so counting characters won't work (or using some sort of substring function... if that even exists in VIM). Is it possible, using VIM / Vi to delete all data from the second pipe to the end of the line for the entire file? There are approx 150,000 lines, so doing this manually would only be appealing to a masochist... e.g. Change the following lines from: 1111|random sized text 12345|more random data la la la|1111|abcde 2222|random sized text abcdefghijk|la la la la|2222|defgh 3333|random sized text|more random data|33333|ijklmnop to: 1111|random sized text 12345 2222|random sized text abcdefghijk 3333|random sized text I'm sure this can be done somehow... I hope. TIA UPDATE: I should have mentioned that I'm running this on Windows XP, so I don't have access to some of the mentioned *nix commands (CUT is not recognized on Windows).

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• iOS Question. Is There a Framework for Build Time Based Apps.

  - by dugla

  I have the need for some time based effects in the iPad app I am building. The UIView class animation capability beginAnimatins/commitAnimations is exactly the sort of thing I am looking for but it is restricted to specific properties of UIView deemed animatable. Ideally, I am looking for a solution that lets me drive an a time-based function that can perhaps send messages to a class of my own choosing at the rate I specify in the animation. Specifically, I have a function - my implementation of the RenderMan function "smoothstep" which is essentially an ease-in ease-out curve common in animation. It takes [0 - 1] as input and outputs [0 - 1] as the curve is evaluated. I want to drive this function for a duration of my own choosing at rate of my own choosing. Thanks in advance. -Doug

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• Is window.location.href = 'some_page.html' followed by search engines?

  - by Arkaaito

  Currently our website uses links to allow the user to change their locale. The problem with this is that you get a lot of random outlinks from each page on the site to... the same page, in other languages. When a search engine traverses this, it gets an excessively complex view of the site. We were going to change it to a form post to avoid this. However, it seems to me that we should just be able to change it to an onclick="window.location.href='change_my_language.php'" rather than an href="change_my_language.php". Am I right? Or do the major search engines scan for and follow this sort of thing nowadays?

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• Android -- Object Creation/Memory Allocation vs. Performance

  - by borg17of20

  Hello all, This is probably an easy one. I have about 20 TextViews/ImageViews in my current project that I access like this: ((TextView)multiLayout.findViewById(R.id.GameBoard_Multi_Answer1_Text)).setText(""); //or ((ImageView)multiLayout.findViewById(R.id.GameBoard_Multi_Answer1_Right)).setVisibility(View.INVISIBLE); My question is this, am I better off, from a performance standpoint, just assigning these object variables? Further, am I losing some performance to the constant "search" process that goes on as a part of the findViewById(...) method? (i.e. Does findsViewById(...) use some sort of hashtable/hashmap for look-ups or does it implement an iterative search over the view hierarchy?) At present, my program never uses more than 2.5MB of RAM, so will assigning 20 or so more object variables drastically affect this? I don't think so, but I figured I'd ask. Thanks.

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• SQL Syntax for Complex Scenario (Deals)

  - by Yisman

  hello everyone i have a complex query to be written but cannot figure it out here are my tables Sales --one row for each sale made in the system SaleProducts --one row for each line in the invoice (similar to OrderDetails in NW) Deals --a list of possible deals/offers that a sale may be entitled to DealProducts --a list of quantities of products that must be purchased in order to get a deal now im trying to make a query which will tell me for each sale which deals he may get the relevant fields are: Sales: SaleID (PK) SaleProducts: SaleID (FK), ProductID (FK) Deals: DealID (PK) DealProducts: DealID(FK), ProductID(FK), Mandatories (int) for required qty i believe that i should be able to use some sort of cross join or outer join, but it aint working here is one sample (of about 30 things i tried) SELECT DealProducts.DealID, DealProducts.ProductID, DealProducts.Mandatories, viwSaleProductCount.SaleID, viwSaleProductCount.ProductCount FROM DealProducts LEFT OUTER JOIN viwSaleProductCount ON DealProducts.ProductID = viwSaleProductCount.ProductID GROUP BY DealProducts.DealID, DealProducts.ProductID, DealProducts.Mandatories, viwSaleProductCount.SaleID, viwSaleProductCount.ProductCount the problem is that it doesnt show any product deals that r not fullfiled (probably because of the productid join). i need that also sales that dont have the requiremnets show up, then i can filter out any saleid that exists in this query "where AmountBought thank you for your help

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• crossdomain cookie using iframe, how?

  - by vsync

  I searched a lot on this topic, but didn't really found a solid answer to this. I need to set a cookie from any domain (out of my control), lets say "Domain B" to my main domain, lets say "Domain A", and be able to read the cookie also, without exiting Domain B. kinda like Facebook connect for websites, or Snap.com, and others of the sort. how it that done? If I look at lets say http://ajaxian.com/ I see Firecookie shows cookies from many domains being used on that website, and I really wanna know how it's achieved.

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• how so select similarities in MySQL?

  - by mysqllearner

  Currently, I am doing a search function. Lets say in my database, I have this data: Keyword1 Keyword2 Keyword3 Keysomething Key and the user entered: "Key" as the keyword to search. This is my current query: Q1: SELECT * FROM data WHERE (data_string LIKE '$key%' OR data_string LIKE '%$key%' OR data_string LIKE '%$key') Basically, I have 2 questions: How do I sort by (order by) similarity. From above example, I should have "Key" as my first result. My current result is: Keyword1, Keyword2, Keyword3, Keysomething and Key My SQL query only search by the "data_string" column, what if I want to seach others column? Do I need to do something like this: Q2: SELECT * FROM data WHERE (data_string LIKE '$key%' OR data_string LIKE '%$key%' OR data_string LIKE '%$key') OR (data_other LIKE '$key%' OR data_other LIKE '%$key%' OR data_other LIKE '%$key') ... Is there any better/faster query than Q2?

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• Drupal does not recognize my website has been installed

  - by Marcos Buarque

  After a successful Drupal install, I was trying to follow the security recommendations and reverted the settings.php file to 444 permissions (read, read, read). Then, all of a sudden, right after doing that, Drupal does not recognize the installation process was completed. It went back to the install screen. Worst of all. I did chmod back to 666 (write, write, write) but it does not work any more. When I move forward as if I was going to install Drupal again, he tells me he does not have permissions to create the files folder under sites/default... But since the installation has already been completed... the files folder is already there... I am puzzled... Could it be some sort of server caching? Since this is one of my first adventures with a Linux server, I am a bit confused. Any help appreciated... Thanks.

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• How to host your own http-like server using ServiceHost?

  - by Ole Jak

  I use ServiceHost for hosting WCF cervices. I want to host near to my WCF services my own tcp programm (like WCF service but with out WCF) for direct sockets operations (like lien to some sort of broadcasting TCP stream) I want to use ServiceHost for somehow simplyfiing proces of creating my TCP sender\listener, to somehow control namespaces (so I would be able to let my clients to send TCP streams directly into my service using some nice URLs like www.example.com:34123/myserver/stream?id=1 or www.example.com:34123/myserver/stream?id=222 and so that I will not be bothered with Idea of 1 client for 1 socket at one time moment, BTW I realy want to keep my WCF services on the same port as my own server or what it is...) Can any body please hrlp me with this?

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• IE 8 prompts user on "slow" jQuery script

  - by Jason

  I have a form with over 100 list items that I must reorder on submit. The following code works to reorder my list without any apparent problems in Firefox; however, IE prompts with the message "A script on this page is causing Internet Explorer to run slowly. If it continues to run, your computer may become unresponsive. Do you want to abort the script?" If the user clicks 'No', the script will work as expected. var listitems = $(form).find('li').get(); listitems.sort(function(a, b) { var compA = $(a).attr('id'); var compB = $(b).attr('id'); return (compA - compB); }); Any ideas on how to make this more efficient?

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• JButtons re-enable themselves after being disabled

  - by Anarchist

  I have an array of JButtons which form a keypad interface. After six numbers are entered I want to disable the keypad so that no further numbers can be entered by the user. I have written the code and the buttons do disable until the mouse hovers above any of them, then the buttons seem to re-enable themselves and run actionEvents added to them. The full code is available here. Possible things that I think are wrong. There is some sort of MouseListener which is ignoring when I set button.setEnabled(false); I haven't separated attributes from the buildGUI(); correctly, I only did this anyway so that the inner class could access them. Possibly something to do with the gridLayout as disabling the buttons seems to work for my services JPanel buttons.

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