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• Javascript, jQuery: external file

  - by Patrick

  hi, I'm loading an external js file in the header of my html document and I have 2 questions about it: 1) I've added alert("ok"); in my external file but I cannot see any message. I guess because this file is loaded before the page is completed... or something like this (in the header), right ? 2) Then I added the jQuery code: $(document).ready( function() { alert("ok"); }); but still no signal of life... what am I doing wrong ? thanks

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• Python Tkinter - Edit external object within event handler?

  - by M3RPHY

  Hey all, As the title says, I'm grabbing the cursor location within a motion triggered event handler in Tkinter. I'd like to update an existing label widget with the location, however I cannot for the life of me figure out how to edit the label's text field (or any external object for that matter) within the event handler. From what I understand, event is the only argument passed to the handler, which means I can't pass the label object. How do I access objects outside of the handler? Apologize for the noobish question as I'm a C programmer new to Python. Thanks!

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• What's wrong with the analogy between software and building construction?

  - by kuosan

  Many people like to think of building software as constructing a building so we have terms like building blocks and architecture. However, lately I've been to a couple of talks and most people say this analogy is wrong especially around the idea of having a non-coding software architect in a project. In my experience, good software architects are those who also write code so they won't design things that only looks good on paper. I've worked with several Architecture Astronauts, who have either limited or outdated experience in programming. These architecture astronauts quite often missed out critical details in their design and cause more harm than good in a project. This makes me wonder what are the differences between constructing a software and a building? How come in the building industry they can have architects who probably never build a house in their life and purely handles design work but not in the software development field?

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• Recommended resources for learning MS Expression Blend

  - by fastmonkeywheels

  I've been designing applications using C# for some time now but I have the need to create a more custom application and Expression Blend was recommended to me. I've downloaded the free trial but it's a little fancier than I expected. I'm not a graphic designer and can't use photoshop to save my life, however I do have images provided by a graphic designer to use for this application. I'm looking for some good resources for learning Blend and using it as a front end to a C# application, much like I would a regular C# forum.

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• Creating a CD-burning feature for a music player based on Java

  - by jjanggoo

  Hi, I'm trying to create a CD-burning feature for a Java-based music player for my school project. Since I'm new to real-life programming (I've only learned to write codes on AP Computer Science A level), I don't know how I can apply the concepts I learned from APCS A to this task. A friend of mine who is studying computer science at graduate school told me to "look up the cd player control functions and add methods in those classes to read in data that you want to write to the CD, write it to a buffer, write everything in the buffer to the CD itself, clear the buffer and then write a new chunk of data into the buffer," but I can't quite grasp what this means, and tt's really hard to contact her right now because she's busy working on her dissertation. Can someone from this forum please guide me through & explain the general concepts? Thank you!

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• VisualStudio 2010 Settings Page - Collection Settings

  - by Ed Eichman

  I have a list of Filemaker database names Each DB name has a list of field/attribute pairs associated with it I have a windows form application in C# 4.0 (vs2010) that wants to use the above data I would like to maintain the list either in the Visual Studio settings page, or in one of the standard visual studio settings files using the standard .NET settings calls I would like to avoid writing my own custom settings, xml, xds (to avoid the "Could not find schema information for the element/attribute " errors) I just have a slightly complicated INI file! I don't want to complicate my life! Do any easy solutions exist? Unless someone has a brighter idea, I am simply going to write string settings with names that indicate it's a FM DB (e.g. "fmdbAddresses"), and values that concat my field/attribute pairs (e.g. "gUserResult=skipField|gAddressID=convertToInt|gAddressID=uniqueIx")

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• NodeJS and node-mongodb-native

  - by w1nk

  Just getting started with node, and trying to get the mongo driver to work. I've got my connection set up, and oddly I can insert things just fine, however calling find on a collection produces craziness. var db = new mongo.Db('things', new mongo.Server('192.168.2.6',mongo.Connection.DEFAULT_PORT, {}), {}); db.open(function(err, db) { db.collection('things', function(err, collection) { // collection.insert(row); collection.find({}, null, function(err, cursor) { cursor.each(function(err, doc) { sys.puts(sys.inspect(doc,true)); }); }); }); }); If I uncomment the insert and comment out the find, it works a treat. The inverse unfortunately doesn't hold, I receive this error: collection.find({}, null, function(err, cursor) { ^ TypeError: Cannot call method 'find' of null I'm sure I'm doing something silly, but for the life of me I can't find it...

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• Getting DataBinder Item's max value

  - by iTayb

  I'm working at the aspx page, and the following code is inserted in a Repeater control: <%# ((System.Collections.Generic.List<double>)DataBinder.Eval(Container.DataItem, "BookPrices")).Max() %> Brings up the following error: 'System.Collections.Generic.List<double>' does not contain a definition for 'Max' List does have an method of Max(), so I'm possibly messing up my code somehow. What is my problem? BookPrices is a list<double> object, which I'd like to print it's maximum value. P.S. You guys are great! I didn't find answers for many of my questions on the web. You really are life savers. Thank you very much! :)

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• Flex Flash Action Script Form Events

  - by peiklk

  Doing some development in Flash Builder 4 using Action Script 3.0. I'm trying to have some code run each time the form is displayed. The form is not always recreated, but sometimes hidden and reused. Visual Basic used to have an Activate event that does similar to what I want. I tried Render, but that fires every time the form changes (via click, text-edit, etc.) We tried the FlexEvent.ADD, but it only fires when the form is first created, same as creation_complete. Is there a good resource that shows the form "life cycle" and all the events and when they are fired and in what order? TIA! NOTE: I'm trying to get our forms to close when the ESC is pressed.

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• Jersey, Spring, Tomcat and Security Annotations

  - by jr

  I need to secure a simple jersey RESTful API in a Tomcat 6.0.24 container. I'd like to keep the authentication with Basic Authentication using the tomcat-users.xml file to define the users and roles (this is for now, like I said its small). Now, for authorization I'd like to be able to use the JSR 250 annotations like @RolesAllowed, @PermitAll, @DenyAll, etc. I cannot for the life of me figure out how to wire this all up together. I really don't want to go spring-security route, since I need something very simple at the current time. Can someone point me in the right direction.

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• Having trouble with fadeIn and fadeOut in IE8 with jQuery

  - by TheDelChop

  Guys, Here is my site: http://www.dreamweddinggroup.com/redesign and I'm having a hell of a tough time figuring out why in gods name my fadeIn, fadeOut and corner() functions won't work in IE8. They were working for a time, but now they have broken and I can't for the life of me figure it out. Can anybody see anything that would cause the problem here? To see what I'm talking about, if you were to click on the "About Us" link at the bottom of the page, you should see the text fade in. Then if you were to click on "Why Dream Wedding Group", the "About Us" text should fade out, and when it fades back in, you would see the new text. Thank you, Joe

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• which ASP.NET hosting site allows listening on different ports than 80 and uses .NET 4?

  - by ijjo

  I'm trying to take advantage of HTML 5 web sockets in .NET and the easiest way appears to be something like what this guy does. I've already tested this myself and it works great, but there are a few problems if I try to deploy this to my hosting site (discountasp.net). Basically, I am not allowed to open up a port on 8080 and listen on it. I then tried to figure out a way to listen on port 80 with IIS as well, but using the HTTPListener, I run into sercurity issues as well. This doesn't seem like it will help since I can't mess with this stuff on the hosting site server either. So to make my life easier, I think I need to find a hosting site that simply allows me to open up a socket on port 8080 and listen on it. Anyone know of one? Or does anyone know of a workaround (besides sniffing all the traffic on port 80)?

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• Transparent PNG menu item backgrounds in IE6 with rollovers

  - by evh

  Hi I have been trying to do this for what feels like all my life I have a list menu with block display links, each link has a sliding doors png background image. I have used this javascript (http://www.ideashower.com/our_solutions/png-hover/) to implement the alphaimageloader fix for ie6 using a transparent gif. When I test it for the first time it works but if I click to a different page and then click back it doesn't work anymore - the menu completely disappears, I can get it to work again by duplicating the transparent gif and changing it's name, but again if I go to another page and then come back to it, it stops working and the menu dissappears. Is this a server caching issue or something like that. Any thoughts on this would be much appreciated! Thanks

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• Android: How to create an onclick event for a SimpleCursorAdapter?

  - by user117701

  I have this code: db=(new DatabaseHelper(this)).getWritableDatabase(); constantsCursor=db.rawQuery("SELECT _ID, title, subtitle, image "+ "FROM news ORDER BY title", null); ListAdapter adapter=new SimpleCursorAdapter(this, R.layout.row, constantsCursor, new String[] {"title", "subtitle", "image"}, new int[] {R.id.value, R.id.title, R.id.icon}); setListAdapter(adapter); registerForContextMenu(getListView()); Which displays a list of titles. I dont however for the life of me know how to create a click event so that i can call another view when i click an item from that list. Anyone?

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• which asp net hosting site allows to listen on differnt port than 80 and uses .net 4?

  - by ijjo

  i'm trying to take advantage of html 5 web sockets in .NET and the easiest way appears to do something like this guy does: http://www.codeproject.com/KB/webservices/c_sharp_web_socket_server.aspx?msg=3485900#xx3485900xx i've already tested this myself and it works great, but there are a few problems if i try to deploy this to my hosting site (discountasp.net). basically i am not allowed to open up a port on 8080 and listen on it. i then tried to figure out a way to listen non port 80 with IIS as well, but using the HTTPListener runs into sercurity issues as well that doesn't seem like will help since i can't mess with this stuff on the hosting site server either: http://stackoverflow.com/questions/169904/can-i-listen-on-a-port-using-httplistener-or-other-net-code-on-vista-without-r so to make my life easier, i think i need to find a hosting site that simply allows me to open up a socket on port 8080 and listen on it. anyone know of one? or anyone know of a workaround (besides sniffing ALL the traffic on port 80)?

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• Open source and salary

  - by darko petreski

  Hi, We are facing a lot of open source software. But someone needs to write that software. How are they payed? Do you know a good article about the open source politics and economy? Sometimes the big companies themselves release open source because they have some benefits. Then they sell support, advices ... My question is what is the real economy about open software? No professional will work for nothing. This software are couple of classes but thousand or may be millions of classes. If you are really a pro you will write software for money, because you have life, wife, kids, taxes, you must earn. Please do not tell me that they are doing this for pleasure or hobby. Regards, Darko Peterski Regards

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• lwjgl 101: How can I write the basics?

  - by Vuntic

  This ought to be really simple, but I cannot for the life of me figure out how to compile anything with lwjgl and have it work. I can write something like package gwison; import org.lwjgl.Sys; public class G { public static void main(String[] args) { System.out.println(Sys.getTime()); } } and I can easily compile a program with several classes in different packages, as long as I wrote all the classes myself. But I have no clue how to make G work. I think it has something to do with classpathes? Maybe? Help?

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• How to add a hyperlink column to a TcxGrid (Developer express grid)

  - by Brian Frost

  Hi In Delphi I've managed (!) to add a column to a TcxGrid table view that appears as a hyperlink (instead of a simple string). To do this, you simply edit 'properties' of the column and choose 'hyperlink'. The cell now shows a hyperlink style (underlined) but I canot for the life of me see how to: Get the cursor to change to the 'hand' when over the link. Add an event that is fired when I click the link. Can anyone help? Thanks.

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• Casting in MVVM Light CommandParamterValue

  - by user275561

  here is my Problem, I want to pass the integer 1 when this canvas is pressed. Every time I click the canvas, I get a An unhandled exception of type 'System.InvalidCastException' occurred in GalaSoft.MvvmLight.dll. Now I could make my life easier and just do the RelayCommand to accept a String instead of int but for the sake of learning. How would i go about doing it this way, <i:Interaction.Triggers> <i:EventTrigger EventName="MouseLeftButtonDown"> <cmd:EventToCommand Command="{Binding ButtonPress}" CommandParameterValue="1" </i:EventTrigger> </i:Interaction.Triggers>

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• Alternative Input Device(Midi) doesn't prevent Screen Saver in Winforms application

  - by DTig

  I have developed a c# winforms application whereby the user is providing input via a midi connected device. The user will go for long periods without using the keyboard or mouse. When I receive a midi message is there anything I can do to "tell" the system that this counts as user activity (ie key press). I don't want the screen saver or time lockouts to occur, if they are actively using the midi device. I think my request is different than other requests I've seen because they want to disable screen savers for the life of their application whereby I just want midi input I receive to count as user interactivity. Is there something I can call when I receive midi input to signify to the system user activity?

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• How can I update information in an Android Activity from a background Service

  - by tmm

  Hello, I am trying to create a simple Android application that has a ActivityList of information, when the application starts, I plan to start a Service that will be constantly calculating the data (it will be changing) and I want the ActivityList to be in sync with the data that the service is calculating for the life of the app. How can I set up my Activity to be listening to the Service? Is this the best way to approach this problem? For example, if you imagine a list of stock prices - the data would be being changed regularly and need to be in sync with the (in my case) Service that is calculating/fetching the data constantly. Thanks in advance

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• Set selection in Dashcode List Controller

  - by wpearse

  I have a list controller in my Dashcode project, it pulls its data from a dynamic source. After my list controller has loaded its data I'd like to set it's selected index to 0 - so that information for the first item in the list is shown. I can't for the life of me figure out how to do this. I've tried: function load() { dashcode.setupParts(); var list = document.getElementById("itemsList"); //list.setSelectionIndexes(0); // nope //list.selectedIndex = 0; // nope }

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• Easiest way to generate P/Invoke code?

  - by Ope

  I am an experienced .Net programer, but have not compiled a C/C++ program in my life. Now I have this C-dll, headers and documentation (3rd party, not from Win API), from which I need to call about ten methods. I was thinking of using Platform Invoke. I found these three tools that would create the code for me: PInvoker: http://www.pinvoker.com P/Invoke Interop Assistant: http://www.codeplex.com/clrinterop P/Invoke Wizard: http://www.paulyao.com/res/pinvoke/pinvoke.aspx and possibly Swig: http://www.swig.org/ Pinvoker seems to have a bit different approach than the Interop assistant and the Wizard. Swig I just found when checking that this question has not been asked here. What are the pros and cons of these tools? What would be the best = easiest and safest way for me to produce the P/Invoke code given that I don't know much about C/C++?

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• NetBeans and Eclipse-like "run configurations"

  - by auramo

  Is it possible to create anything similar to Eclipse's "run configurations" in NetBeans? I am working on a huge project which is currently not divided into any subprojects in Eclipse. There are in fact many applications in the project which have their own main-methods and separate classpaths. I know, it's a mess. I'm considering about migrating the project to NetBeans. In the long run it would be sensible to create many projects but for now it would be a real life-saver if I could do similar stuff in NetBeans than in Eclipse: create "launchers" which have their own classpaths. Is this possible? If it's easy to emulate this behaviour with "external" projects, hints about that are welcome as well.

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• Can I remove items from a ConcurrentDictionary from within an enumeration loop of that dictionary?

  - by the-locster

  So for example: ConcurrentDictionary<string,Payload> itemCache = GetItems(); foreach(KeyValuePair<string,Payload> kvPair in itemCache) { if(TestItemExpiry(kvPair.Value)) { // Remove expired item. Payload removedItem; itemCache.TryRemove(kvPair.Key, out removedItem); } } Obviously with an ordinary Dictionary this will throw an exception because removing items changes the dictionary's internal state during the life of the enumeration. It's my understanding that this is not the case for a ConcurrentDictionary as the provided IEnumerable handles internal state changing. Am I understanding this right? Is there a better pattern to use?

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