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• How to use Combo Box AddRange in WPF C#

  - by Sandeep Bansal

  Hi everyone, I have a little problem, I have an array and I want to add that in a Combobox, so I want to use the AddRange method, but it isn't available in WPF, is there a way that I can do it in the combobox? Thanks.

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• Best practices regarding equals: to overload or not to overload?

  - by polygenelubricants

  Consider the following snippet: import java.util.*; public class EqualsOverload { public static void main(String[] args) { class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } public boolean equals(Thing other) { return this.x == other.x; } } List<Thing> myThings = Arrays.asList(new Thing(42)); System.out.println(myThings.contains(new Thing(42))); // prints "false" } } Note that contains returns false!!! We seems to have lost our things!! The bug, of course, is the fact that we've accidentally overloaded, instead of overridden, Object.equals(Object). If we had written class Thing as follows instead, then contains returns true as expected. class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } @Override public boolean equals(Object o) { return (o instanceof Thing) && (this.x == ((Thing) o).x); } } Effective Java 2nd Edition, Item 36: Consistently use the Override annotation, uses essentially the same argument to recommend that @Override should be used consistently. This advice is good, of course, for if we had tried to declare @Override equals(Thing other) in the first snippet, our friendly little compiler would immediately point out our silly little mistake, since it's an overload, not an override. What the book doesn't specifically cover, however, is whether overloading equals is a good idea to begin with. Essentially, there are 3 situations: Overload only, no override -- ALMOST CERTAINLY WRONG! This is essentially the first snippet above Override only (no overload) -- one way to fix This is essentially the second snippet above Overload and override combo -- another way to fix The 3rd situation is illustrated by the following snippet: class Thing { final int x; Thing(int x) { this.x = x; } public int hashCode() { return x; } public boolean equals(Thing other) { return this.x == other.x; } @Override public boolean equals(Object o) { return (o instanceof Thing) && (this.equals((Thing) o)); } } Here, even though we now have 2 equals method, there is still one equality logic, and it's located in the overload. The @Override simply delegates to the overload. So the questions are: What are the pros and cons of "override only" vs "overload & override combo"? Is there a justification for overloading equals, or is this almost certainly a bad practice?

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• Jar Store - prevent from copying

  - by Vladimir

  We are going to create Jar Store the way like App Store works, but for Java Developers. Everyone will able to submit and sell custom .jar library which solves some little problem, but solves it very good to save other developer's work time. The only undecided question is how to prevent .jar copying or publishing bought .jar to the Net.

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• msys+mingw - is there installer or at least .tar.lzma/.zip?

  - by Maciej Piechotka

  I try to install n'th time the msys+mingw - however with little success. I need the minimal developer system (standard tools such as sed/awk+autotools+gcc) however each time something is not working (for example currently when I try to run autotools m4 goes into some error loop on AC_INIT). I know they stopped providing installer 'for easy update of components' and they are working on something but maybe there is something unofficial.

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• iPhone developer program count-down

  - by yakub_moriss

  Hi iExperts I am little bit confus about the iPhone developer program. I know its One year subscription program after that we have to re-new it Q : From which time the count down of iPhone developer program starts ? from the Enrolment time or from the application submission time is anyone have idea then pls tell me frnds... Thanks in advaced...

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• How to implement collapsible sections like on this .aspx page?

  - by CSharp Noob

  This .aspx page has a very nice set of collapsible sections with a little "+ -" control. http://www.microsoft.com/sqlserver/2008/en/us/editions-compare.aspx Can anyone tell me how this might be done in Visual Studio? I have tried using firebug to deconstruct the page but can't find the script that is doing the showCollapsibleItem() call. Thank you!

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• Spotting similarities and patterns within a string - Python

  - by RadiantHex

  Hi folks, this is the use case I'm trying to figure this out for. I have a list of spam subscriptions to a service and they are killing conversion rate and other usability studies. The emails inserted look like the following: [email protected] [email protected] [email protected] roger[...]_surname[...]@hotmail.com What would be your suggestions on spotting these entries by using an automated script? It feels a little more complicated than it actually looks. Help would be very much appreciated!

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• Why aren't arrays expandable?

  - by Mustafa

  When we create an array, we cannot change its size; it's fixed. OK, seems nice, we can create a new bigger array and copy the values one by one and that's little slow. What's the technical background of it?

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• Adding outlets to UIButton

  - by alltom

  For quickly mocking up UI, I'd like to be able to drag buttons onto a view in interface builder, then drag a connection from that button to the view that should appear when you click it. A subclass of UIButton is a little inconvenient to use in IB, so I'd prefer to add the behavior to UIButton itself. Unfortunately, it seems like outlets created in a category aren't visible in IB: @interface UIButton (myextensions) { IBOutlet UIView *outletDestination; } @end Can extra outlets be added this way?

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• How to crop scanned image using C#?

  - by ieaglle

  I have a scanned image of a book page and i need to crop this scan for leaving only page area. I tried to use AForge to detect page borders, but it doesn't work because the space which i need to crop may consist of little "light" areas (due to scanner quality) and edge detector detects borders there. That's why this is bad idea as for me. Could you recommend something? P.S. Please don't tell me to use non-free libraries.

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• Best C++ static & run time tools

  - by Hortitude

  Apologies if I missed this question already, but I searched and couldn't find it. I have been out the C/C++ world for a little while and am back on a project. I was wondering what tools are preferred today to help with development. The types of tools I'm referring to are: Purify Electric Fence PC-Lint cscope Thanks!

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• Sending an int array through Winsocks

  - by seed

  I'm trying to send an int array through Winsocks. I might be wrong, but I'm pretty sure only a char* is supported so I'm kind of stuck on how to do this properly. There are also problems with little/big edian, so what would be a good way to do this? I've already asked a question of converting int array to char but it was recommended to start a new thread on this in the networking section instead.

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• Data warehousing in sql server 2008

  - by 3bd

  Hi All: I am new to data warehousing and I am a little confused plz provide some simple steps to create a cube and fill it and make querey on it to know : I have a database with the original data and I have designed the star schema and made appropriate tables I have created an analysis service project in VS 2008 and then I have made the data source -data source view-dimensions - and the cube all that based on the star schema i have created previously now: what should I do to: fill this cube make query on this cube

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• Concatenate SQL script from Powershell

  - by Jeff Meatball Yang

  I have a bunch of (50+) XML files in a directory that I would like to insert into a SQL server 2008 table. How can I create a SQL script from the command prompt or Powershell that will let me insert the files into a simple table with the following schema: XMLDataFiles ( xmlFileName varchar(255) , content xml ) All I need is for something to generate a script with a bunch of insert statements. Right now, I'm contemplating writing a silly little .NET console app to write the SQL script. Thanks.

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• What is the fastest method to create a new database from a template ?

  - by Locksfree

  We are creating databases on demand and the databases can be created from different templates. All templates have the same structure but different data. The data contained by the templates is small. What is the fastest way to create a copy of the database: Backup/Restore Using T-SQL ? Using SMO ? Create a new database from a scripted version of the template and then fill in the little data required ? Other ?

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• What are the advantages and disadvantages of a web site that contains a single page ?

  - by Misha Moroshko

  I would like to code a little web site that will contain several sections like "Home", "Gallery", "Contact Us", "FAQs", and so on. I thought to do this in one HTML by putting each section in a div and show only one div per time (using Javascript / jQuery), based on the chosen menu button. Alternatively, I could create a separate HTML page per section, and link these pages to the menu buttons. What are the advantages and disadvantages of these two methods ?

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• Deploy all files in a website or just the ones required to run it?

  - by Haroon

  Hi.. Just wondering is there any drawbacks to publishing a ASP .NET web application by copying all the files in it? (That means all the .cs, .csproj files will be included in the published folder) So far I can think that the published folder's total size may become a little bigger (but that a negligible issue for me).

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• Picture gallery with selected picture zoomed and bright

  - by Epoch

  I am trying to create a picture gallery in android, where picture in selection (in gallery) will be bigger in size, glow a little bit. Where as pictures not selected will be dull, and smaller in size. I tried gallery.setUnselectedAlpha() function to make images unselected dull, but it is not working. How to achieve the effect, please help.

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• Rewrite URLs for DNN

  - by codemypantsoff

  I have a site and already trying to do a little url rewritting but want to know if there is a solution to make it better my current state urls look like this http://snit.us/Home/tabid/314/CN/1/RE/23/United_States_Missouri.aspx I want to change them to something more ordered so in my new scheme i want to do this http://snit.us/Home/United_States/Missouri/default.aspx obviously the point is that if i remove missouri from the new url it would find all United_States - etc etc etc even better would be to have http://snit.us/Home/United_States/Missouri so its even less cluttered

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• if statement in aspx page

  - by Brad

  I want to write a basic if statement on my site to display either item 1 or item 2 depending on if a variable is set to true. I am not to familiar with .Net and need a little help with the basic structure of how to get an if statement to work on the aspx page. thank you for your help.

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• django development IDE

  - by Adam Carr

  I have done a little django development but it has all been in a text editor. I was curious what more advanced development tools others are using in their django development. I am used to using Visual Studio for development and really like the intellisense, code completion, and file organization it provides and would like to find something (or a combination of tools) that would provide some of this in the django/python environment.

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• What is an ideal variable naming convention for loop variables?

  - by just mike

  If you are writing a simple little loop, what should you name the counter? Provide example loops!

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• JavaScript Music Player with progress bar?

  - by pfunc

  I am creating a little JavaScript music player that sits on the btottom of the page, a lot like streampad. But streampad uses a flash progress bar for the song and JavaScript for everything else and I am having a hard time finding anyone who does this with JavaScript alone. Can anyone point me in the right direction on how this can be done (preferably without using HTML5)?

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• Verilog linting tools?

  - by mrflibble

  What are your favorite linting tools for verilog? I am currently looking for a good verilog linting tool. And preferably one that can be configured to either handle or ignore certain vendor specific primitives like LUT's, PLL's, etc. I recently tried verilator-3.810, but out of the box it needs a little help with the primitives. So what (linting) tools do you use to deal with the not-so-strict syntax of verilog?

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• gwt file permission

  - by Hoax

  I have a little GWT/AppEngine Project which uses RPC. Basically I need to get some data from a XML file that resides on the server. But when I use the RPC to read the file in my server-package I am getting a AccessControlException (access denied). Any ideas what the problem is? cheers hoax

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