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  • Disposables, Using & Try/Catch Blocks

    - by Aren B
    Having a mental block today, need a hand verifying my logic isn't fubar'ed. Traditionally I would do file i/o similar to this: FileStream fs = null; // So it's visible in the finally block try { fs = File.Open("Foo.txt", FileMode.Open); /// Do Stuff } catch(IOException) { /// Handle Stuff } finally { if (fs != null) fs.Close(); } However, this isn't very elegant. Ideally I'd like to use the using block to dispose of the filestream when I'm done, however I am unsure about the synergy between using and try/catch. This is how i'd like to implement the above: try { using(FileStream fs = File.Open("Foo.txt", FileMode.Open)) { /// Do Stuff } } catch(Exception) { /// Handle Stuff } However, I'm worried that a premature exit (via thrown exception) from within the using block may not allow the using block to complete execution and clean up it's object. Am I just paranoid, or will this actually work the way I intend it to?

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  • C# "Enum" Serialization - Deserialization to Static Instance

    - by Walt W
    Suppose you have the following class: class Test : ISerializable { public static Test Instance1 = new Test { Value1 = "Hello" ,Value2 = 86 }; public static Test Instance2 = new Test { Value1 = "World" ,Value2 = 26 }; public String Value1 { get; private set; } public int Value2 { get; private set; } public void GetObjectData(SerializationInfo info, StreamingContext context) { //Serialize an indicator of which instance we are - Currently //I am using the FieldInfo for the static reference. } } I was wondering if it is possible / elegant to deserialize to the static instances of the class? Since the deserialization routines (I'm using BinaryFormatter, though I'd imagine others would be similar) look for a constructor with the same argument list as GetObjectData(), it seems like this can't be done directly . . Which I would presume means that the most elegant solution would be to actually use an enum, and then provide some sort of translation mechanism for turning an enum value into an instance reference. How might one go about this?

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  • Building using CMake-GUI

    - by goodwince
    I am trying to build Marble on Windows (XP) and have been extremely unsuccessful. Following the instructions written here. I am wanting to build it as QT only. Configuration of the build tree fails. I am using the cmake-gui since I have never tried to compile using cmake it's possible it could be something in there. I found a similar issue; however, they compiled QT using Visual Studio and I am using QT Creator which compiles with MinGW so I need to compile in a different manner. CMake-GUI configuration source-code: MyDirectory/Marble where to build: MyDirectory/Build I also added an entry as.. DQTONLY and it's value set to ON

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  • FLEX: is PopupManager working with mouseover / mouseout events ?

    - by Patrick
    hi, I want to make work PopupManager as a Tooltip. So I want to create a popup everytime I move the mouse over my component and make it disappear when I move the mouse out. Moreover, I have many components in my canvas, so I need it not to be too expensive. Also, when I move the mouse out from the component, but over the pop-up, it should not disappear, because I want to click on the buttons inside it. I need something similar to gmail chat popups. Is it doable with PopupManager ? thanks

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  • How to combine library with my jar?

    - by Dacto
    Ok so i wrote a program that makes use of a 3rd party open source library and i want to package it with my program in a single jar. I'm using netbeans 6.8 and everything I've tried java always spit back the error: java.lang.NoClassDefFoundError: libraryname; off topic:also i would like to know how to make an executable-jar(exe) through netbeans if it is possible. (ive seen programs that were written in java but were an .exe) EDIT discovered a plugin for eclipse called FatJar which can do what i want, but i cant find something similar for netbeans, is there such thing?

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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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  • ICC vs GCC - Optimization and CPU architecture

    - by Rayne
    Hi all, I'm interested in knowing how GCC differs from Intel's ICC in terms of the optimization levels and catering to specific processor architecture. I'm using GCC 4.1.2 20070626 and ICC v11.1 for Linux. How does ICC's optimization levels (O1 to O3) differ from GCC, if they differ at all? The ICC is able to cater specifically to different architectures (IA-32, intel64 and IA-64). I've read that GCC has the -march compiler option which I think is similar, but I can't find a list of the options to use. I'm using Intel Xeon X5570, which is 64-bit. Are there any other GCC compiler options I could use that would cater my applications for 64-bit Intel CPUs? Thank you. Regards, Rayne

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  • Mono mkbundle issue

    - by Sean
    Hello, I am trying to bundle mono runtime with a C# a simple (console) program that does nothing, but 'hello world'. Got Cygwin, configured it all, though it fails: $ mkbundle -o x2 x.exe --deps -z OS is: Windows Sources: 1 Auto-dependencies: True embedding: C:\cygwin\home\Sean\x.exe compression ratio: 31.71% embedding: C:\PROGRA~2\MONO-2~1.1\lib\mono\4.0\mscorlib.dll compression ratio: 34.68% Compiling: as -o temp.o temp.s gcc -mno-cygwin -g -o x2 -Wall temp.c `pkg-config --cflags --libs mono-2|dos2unix` -lz temp.o temp.c: In function `main': temp.c:173: warning: implicit declaration of function `g_utf16_to_utf8' temp.c:173: warning: assignment makes pointer from integer without a cast temp.c:188: warning: assignment makes pointer from integer without a cast /tmp/ccu8fTcQ.o: In function `main': /home/Sean/temp.c:173: undefined reference to `_g_utf16_to_utf8' /home/Sean/temp.c:188: undefined reference to `_g_utf16_to_utf8' collect2: ld returned 1 exit status [Fail] Tried post with similar problem to mine here, but it didn't work either. My configuration: Windows 7 64bit Mono 2.8.1 Latest Cygwin Not sure what's the story here. Help appreciated.

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  • Graphing new users by date in a Rails app using Seer

    - by Danger Angell
    I'd like to implement a rolling graph showing new users by day over the last 7 days using Seer. I've got Seer installed: http://www.idolhands.com/ruby-on-rails/gems-plugins-and-engines/graphing-for-ruby-on-rails-with-seer I'm struggling to get my brain around how to implement. I've got an array of the Users I want to plot: @users = User.all( :conditions = {:created_at = 7.days.ago..Time.zone.now}) Can't see the right way to implement the :data_method to roll them up by created_at date. Anyone done this or similar with Seer? Anyone smarter than me able to explain this after looking at the Seer sample page (linked above)?

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  • FBConnect for iPhone: sessionDidNotLogin, sessionDidLogout, session didLogin not called the second t

    - by Irene
    My problem is very similar to this question, however I am posting a new one, as the answer to the aforementioned does not seem to solve my problem. I have a multiview application - the first view is where the user logs in to Facebook, and the second where he picks an image and uploads it there. The first time the app runs, everything works fine, however if I return to the login view and press logout, then any calls to sessionDidNotLogin, sessionDidLogout or session didLogin don't seem to work. I found out that the first time, if I NSLog(@"%@",session.delegates); I have 2; my LoginViewController and the FBLoginButton. However, apart from that first time, the same log prints only the LoginViewController and not the FBLoginButton. I guess this is connected somehow, but I don't know how to solve it. Do I have to manually add the FBLoginButton to the session delegates, or I'm doing something else wrong here? Thank you for any help/suggestion.

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  • A good web 'desktop' JavaScript, CSS, or both, library that likes ASP.NET Web Forms

    - by ProfK
    I've come across, in passing, several suites of functions, widgets, frameworks, etc. that seek to produce a desktop like experience on the web. Most are JavaScript and CSS tools that handle web content on an emulation of the desktop-paradigmed UI, e.g. TreeView + Content == Explorer. Is there such a library nicely compatible with ASP.NET Forms without weeks of grief? I'll also settle for something similar, but instead of native ASP.NET, a library for any of the open source CMS products for ASP.NET. (Umbraco is at the top of my list, followed by mojoPortal. I aspire to the level of coding their creators easily demonstrate in the product. [PS, I don't want a 'desktop' ux per se, just light and simple dynamic layout for drag 'n drop, dock windows, a dock bar?.. and other fancy magic.

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  • UISplitViewController, animating views

    - by Romeo Robles
    Hello, I'm trying to animate my detail view controller to transition with a page curl (up/down). I'm trying to achieve a similar effect as the Notes application on the iPad, this transition was also reproduced by CulturedCode in their Things application for iPad. My problem is that the animation is clipped to the bounds of the Detail View Controller, it doesn't animate into the Master View Controller, therefore limiting the effect. I see that Apple and CulturedCode managed to make this happen, but I'm stumped. I've tried the following solutions: self.splitViewController.view.clipToBounds = False; self.view.clipToBounds = False; self.tableView.clipToBounds = False; The only other solution I can think of is discarding the UISplitViewController altogether and creating my own VC programmatically that will mimic the UISVC behavior so that both of the views (former separate view controllers) will share the same Super View. Thank you in advance, any advice will help. RR.

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  • Is this the correct way of speaking to a "Content Manager" Class?

    - by DeanMc
    I am creating a silverlight site. I am currently breaking out my ideas into pieces of functionality. One of the idea's I have is the concept of a content manager. This is essentially a UI control with 4 regions. Top, Bottom, Right & Left. I also have a collection of objects that are considered "Menu Items". These are controls that function as a way to navigate around, similar to links. The idea I have is to implement an IMenuItem interface. Among the standard pieces of information (Text, PageReference, etc) I was also going to hold a reference to the content manager. My idea behind this thinking is that I can pass the PageReference to a property on the ContentManager and then call a method which knows how to update the content manager accordingly. Is this the best way of implementing this or is their some sort of pattern for it?

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  • Clickable link in RadGrid column

    - by brainimus
    I have a RadGrid where a column in the grid holds a URL. When a put a value in the column I can see the URL but the URL is not clickable (to go to the URL). How can I make the URL clickable? Here is a rough example of what I'm doing now: DataTable table = new DataTable(); DataRow row = table.Rows[0]; row["URL"] = "http://www.google.com"; grid.DataSource = table; In addition I'd really like to show specific text instead of the URL. Something similar to <a href="http://www.google.com">Link</a> in HTML. Is there anyway to do this?

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  • Automated processing of an Email in C#

    - by Christian Payne
    Hi All, Similar question as this one but for a Microsoft Environment. Email -- Exchange Server --[something] For the [something] I was using Outlook 2003 & C# but it feels messy (A program is trying to access outlook, this could be a virus etc) Microsoft.Office.Interop.Outlook.Application objOutlook = new Microsoft.Office.Interop.Outlook.Application(); Microsoft.Office.Interop.Outlook.NameSpace objNS = objOutlook.GetNamespace("MAPI"); objNS.Logon("MAPIProfile", "MAPIPassword", false, true); Is this the best way to do it? Is there a better way of retrieving and processing emails in a Microsoft environment???

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  • Sparse matrices / arrays in Java

    - by DanM
    I'm working on a project, written in Java, which requires that I build a very large 2-D sparse array. Very sparse, if that makes a difference. Anyway: the most crucial aspect for this application is efficency in terms of time (assume loads of memory, though not nearly so unlimited as to allow me to use a standard 2-D array -- the key range is in the billions in both dimensions). Out of the kajillion cells in the array, there will be several hundred thousand cells which contain an object. I need to be able to modify cell contents VERY quickly. Anyway: Does anyone know a particularly good library for this purpose? It would have to be Berkeley, LGPL or similar license (no GPL, as the product can't be entirely open-sourced). Or if there's just a very simple way to make a homebrew sparse array object, that'd be fine too. I'm considering MTJ, but haven't heard any opinions on its quality. Thanks!! -Dan

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  • JQuery UI sortable is slow in IE8, but works good in IE7 and IE8 compatible mode

    - by artvolk
    JQuery UI sortable (including demos) are slow in all IE8 I can test, but runs smoothly in IE7 and IE8 compatible mode. The more complex is a markup on the page, the more IE8 is slowing down (that's I can understand, the DOM tree became more complex). I'm using JQuery 1.3.2 and JQuery UI 1.7.2 (tested with 1.7.3 -- the same story). I've found a lot of similar reports (for the new JQuery UI 1.8.x with JQuery 1.4 too), but no answers. May be there is a some solution (EXCEPT turning IE8 into IE7 compatibility mode by metatag or header). Thanks in advance!

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  • Windows gadget in WPF - show while "Show desktop" is activated

    - by Jannick
    Hi I'm trying to create a "gadget" like application using WPF. The goal is to get the same behavior as a normal Windows 7 gadget: No task-bar entry Doesn't show up when you alt+tab windows NOT always on top, applications can be on top Visible while performing 'Aero Peek' Visible while using 'Show desktop' / Windows+D I've been able to accomplish the first four goals, but have been unable to find a solution to the fifth problem. The closest I've come is by using the utility class from http://stackoverflow.com/questions/75785/how-do-you-do-appbar-docking-to-screen-edge-like-winamp-in-wpf, but this turns the app into a "toolbar", thereby banishing applications from the part of the screen where my gadget GUI is placed. I can see that similar questions has been asked previously on Stackoverflow, but those have died out before a solution was found. Posting anyway in the hope that there is now someone out there with the knowledge to solve this =)

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  • Checking attribute exists in JSP

    - by Javi
    Hello, I have some classes which extends a superclass, and in the JSP I want to show some attributes of these classes. I only want to make one JSP, but I don't know in advance if the object has an attribute or not. So I need a JSTL expression or a tag which checks that the object I pass has this attribute (similar to in operator in javascript, but in the server). <c:if test="${an expression which checks if myAttribute exists in myObject}"> <!-- Display this only when myObject has the atttribute "myAttribute" --> <!-- Now I can access safely to "myAttribute" --> ${myObject.myAttribute} </C:if> How can I get this? Thanks.

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  • What are the worst working conditions you have written code in?

    - by Saurabh Sawant
    There are good times and there are worst times. I recently had to write code in a hot room with temperatures near 107°F (42°C); nothing to sit on; 64 Kbps inconsistent internet connection; warm water for drinking and a lot of distractions and interruptions. I am sure many people have been in similar situations and I would like to know your experiences. More experiences at HackerNews about the same topic. Even more experiences at Slashdot about the same subject.

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  • Hardware Emulator / Simulator for Winforms .Net Application

    - by Suneet
    I have a WinForms .Net HMI software which talks to hardware over USB. I check for communication with the hardware at Load time and if communication is active then run it (The hardware manufacturer has provided a communication library to talk over USB). I want to build an emulator for cases when communication with hardware is not possible (not connected) and want the software to run in simulated mode by providing dummy values for different states of hardware. Has anyone implemented something similar? Any pointers will be helpful. Are there any design patterns to handle such implementations. TIA

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  • How to simulate a mouse click on a UIWebView in Cocoa for the iPhone?

    - by eagle
    I'm trying to setup automated unit tests for an iPhone application. I'm using a UIWebView and need to simulate clicks on different links. I've tried doing this with JavaScript, but it doesn't produce the same result as when I manually click on the links. The main problem is with links that have their target property set. I believe the only way for this automated unit test to work correctly is to simulate a mouse click at a specific x/y coordinate (i.e. where the link is located). Since the unit testing will only be used internally, private API calls are fine. It seems like this should be possible since the iPhone app isimulate seems to do something similar. Is there any way to do this in the framework?

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  • Merge items in nanoc

    - by Gordon Potter
    I have been trying to use nanoc for generating a static website. I need to organize a complex arrangement pages I want to keep my content DRY. How does the concept of includes or merges work within the nanoc system? I have read the docs but I can't seem to find what I want. For example: how can I take two partial content items and merge them together into a new content item. In staticmatic you can do some like the following inside your page. = partial('partials/shared/navigation') How would a similar convention work within nanoc?

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  • Recursively CVS add files/directories and ignore existing CVS files.

    - by meder
    There's a similar post @ http://stackoverflow.com/questions/5071/how-to-add-cvs-directories-recursively However, trying out some of the answers such as: find . -type f -print0| xargs -0 cvs add Gave: cvs add: cannot open CVS/Entries for reading: No such file or directory cvs [add aborted]: no repository And find . \! -name 'CVS' -and \! -name 'Entries' -and \! -name 'Repository' -and \! -name 'Root' -print0| xargs -0 cvs add Gave: cvs add: cannot add special file `.'; skipping Does anyone have a more thorough solution to recursively adding new files to a CVS module? It would be great if I could alias it too in ~/.bashrc or something along those lines. And yes, I do know that it is a bit dated but I'm forced to work with it for a certain project otherwise I'd use git/hg.

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  • C#: Semantics for generics?

    - by Rosarch
    I have a list: private readonly IList<IList<GameObjectController>> removeTargets; PickUp inherits from GameObjectController. But when I try this: public IList<PickUp> Inventory // ... gameObjectManager.MoveFromListToWorld(this, user.Model.Inventory); I get a compiler error: cannot convert from 'System.Collections.Generic.IList' to 'System.Collections.Generic.IList' Why does this occur? Shouldn't this be fine, since PickUp is a subclass of GameObjectController? Do I need something like Java's Map<E extends GameObjectController>? Earlier, I was having a similar problem, where I was trying to implicitly cast inventory from an IList to an ICollection. Is this the same problem?

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