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  • unrecognized selector sent to instance

    - by iamsmug
    My app works fine in the simulator but when I run it on my phone I get this error: 2010-04-05 21:32:45.119 Top Banana[119:207] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[MethodViewController setReferringObject:]: unrecognized selector sent to instance 0x16e930' It happens here: -(void)method { [UIView beginAnimations:@"View Flip" context:nil]; [UIView setAnimationDuration:0.50]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:self.navigationController.view cache:NO]; MethodViewController *methodViewController = [[MethodViewController alloc] initWithNibName:@"MethodViewController" bundle:0]; NSManagedObject *selectedObject = self.referringObject; methodViewController.referringObject = selectedObject; [self.navigationController pushViewController:methodViewController animated:NO]; methodViewController.title = @"Method"; [UIView commitAnimations]; [MethodViewController release]; } It crashes on this line: methodViewController.referringObject = selectedObject; Not sure how to resolve this as it works in the simulator, I'm sure it is fairly basic to fix, any help will be appreciated.

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  • MVC & Design patterns in C++

    - by theunanonim
    I have an assignment (university level) in C++ The application that was done so far: - MVC agenda - the views are command-line - Agenda contains a list of contacts - a contact may be a friend or an acquiantance - Agenda may contain also a Company that is a contact and may contain other contacts (sorry the code is already too big as I tried to keep the MVC aspect of the application, and I can't post it here or request your time to study it..) To do: - implement factory method pattern - implement observer pattern - implement strategy pattern - implement visitor pattern The evaluation will depend on the number of added patterns and places they have been added. Am I an idiot or this is the stupidies possible assignement ? If not, please help me with some basic tips.. which one where ? Best Regards. P.S. Sorry for my English

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  • International JRE6 or JDK6 or reading a file in "cp037" encoding scheme

    - by Reddy
    I have been trying to read a file in "cp037" encoding scheme using JAVA. I able to read a file in basic encoding schemes like UTF-8, UTF16 etc...After a bit of research on the internet i came to know that we need charset.jar or international version of JRE be installed to support extended encoding schemes. Can anyone send me a link for international version of JRE6 or JDK6. or is there any better way that i could read a file in cp037 encoding scheme. P.S: cp037 is a character encoding scheme supported by IBM Mainframes. All i need is to display a file in windows, which is being generated on IBM Mainframes machine, using a java program. Thanks in advance for your help... :-)

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  • How to position columns in select list based on a variable.

    - by Rohit
    I am creating a dynamic grid which is created by selecting the format defined in the below XML.My select list includes all columns in this XML,I want to position these columns columns on the basic of position attribute in XML. <gridFormat> <column property="CustomerID" dbName="CustName" HeaderText="Customer" IsVisible="0" Position="1" /> <column property="CustomerName" dbName="FacilityName" HeaderText="Facility" IsVisible="1" Position="3" /> <column property="FacilityInternalID" dbName="Pname" HeaderText="Patient" IsVisible="1" Position="2" /> </gridFormat> I cannot select them in the order specified by the position attribute. I can do it in C# by looping around the returned datatable and specifically position columns using datatable.columns.setordinal() method. Is there any better way in SQL or C# to accomplish this.

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  • Simulating brush strokes for painting application

    - by DrRobot
    I'm trying to write an application that can be used to create pictures that look like paintings using simulated brush strokes. Are there any good sources for simple ways of simulating brush strokes? For example, given a list of mouse positions that the user has dragged the mouse through, a brush width and a brush texture, how do I determine what to draw to the canvas? I've tried angling the brush texture in the direction of the mouse movement and dabbing several brush texture images along the path, but it doesn't look great. I think I'm missing something where the brush texture should shrink and grow on corners. Any simple to follow links would be appreciated. I've found complex academic papers on simulating e.g. oil paints but I just want a basic algorithm to use that produces OK results if possible.

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  • Rails: getting logic to run at end of request, regardless of filter chain aborts?

    - by JSW
    Is there a reliable mechanism discussed in rails documentation for calling a function at the end of the request, regardless of filter chain aborts? It's not after filters, because after filters don't get called if any prior filter redirected or rendered. For context, I'm trying to put some structured profiling/reporting information into the app log at the end of every request. This information is collected throughought the request lifetime via instance variables wrapped in custom controller accessors, and dumped at the end in a JSON blob for use by a post-processing script. My end goal is to generate reports about my application's logical query distribution (things that depend on controller logic, not just request URIs and parameters), performance profile (time spent in specific DB queries or blocked on webservices), failure rates (including invalid incoming requests that get rejected by before_filter validation rules), and a slew of other things that cannot really be parsed from the basic information in the application and apache logs. At a higher level, is there a different "rails way" that solves my app profiling goal?

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  • Where can I find soft-multiply and divide algorithms?

    - by srking
    I'm working on a micro-controller without hardware multiply and divide. I need to cook up software algorithms for these basic operations that are a nice balance of compact size and efficiency. My C compiler port will employ these algos, not the the C developers themselves. My google-fu is so far turning up mostly noise on this topic. Can anyone point me to something informative? I can use add/sub and shift instructions. Table lookup based algos might also work for me, but I'm a bit worried about cramming so much into the compiler's back-end...um, so to speak. Thanks!

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  • C++ : size of int, long, etc...

    - by Jérôme
    I'm looking for detailed informations regarding the size of basic C++ types. I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler. But are there any standards ? I'm using Visual Studio 2008 on a 32 bit achitecture. Here is what I get : char : 1 byte short : 2 bytes int : 4 bytes long : 4 bytes float : 4 bytes double : 8 bytes I tried to find, without much success, reliable informations telling the sizes of char, short, int , long, double, float (and other types I don't think of) under different architecture and compiler.

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  • navigation between screens Iphone programming

    - by Sephy
    Hi, I don't know if my question will be clear or not, but i'm starting basic stuff with iphone programming, and i'm trying to understand how to go from a screen to another. lets say i have a screen with a "next page" button and another page with a "return" button. I have a general idea of how to do this, but I don't know how to put it together. I think I need an IBAction method for each button, and in each method a navigation controller with pushViewController. So far, i've tried the following code, but even if it compiles properly and runs when i push the button, there is no change of screen... -(IBAction) toNext(id)sender{ NSLog(@"before code"); NextViewController *nvc = [[NextViewController alloc] initWithNibName:@"NextView" bundle:nil]; [self.navigationController pushViewController:nvc animated:YES]; [nvc release]; NSLog(@"after code"); } If someone had a nice tuto for me, it could be of some help... thx

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  • Another floating point question

    - by jeffmax329
    I have read most of the posts on here regarding floating point, and I understand the basic underlying issue that using IEEE 754 (and just by the nature of storing numbers in binary) certain fractions cannot be represented. I am trying to figure out the following: If both Python and JavaScript use the IEEE 754 standard, why is it that executing the following in Python .1 + .1 Results in 0.20000000000000001 (which is to be expected) Where as in Javascript (in at least Chrome and Firefox) the answer is .2 However performing .1 + .2 In both languages results in 0.30000000000000004 In addition, executing var a = 0.3; in JavaScript and printing a results in 0.3 Where as doing a = 0.3 in Python results in 0.29999999999999999 I would like to understand the reason for this difference in behavior. In addition, many of the posts on OS link to a JavaScript port of Java's BigDecimal, but the link is dead. Does anyone have a copy?

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  • How do I determine the dimensions of a .NET listview at runtime?

    - by Dave
    I have a form with a split container and each panel has a list view and some buttons. I wanted to make sure that the header and at least two rows are visible in a listview. I originally determined the values for panel1MinSize & panel2MinSize by fine tuning the values visually (on my XP development machine). This approach was fine until I tested my app on Windows Vista - the basic dimensions of the listview are different and the listview is too small. To overcome this I believe I need to determine the listview dimensions at runtime and do some maths to set the panel min size but I can't see how to do this. Is this the right approach or is there an easier way?

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  • performing a Http request on android

    - by rantravee
    Hi, Could someone provide the basic code to use if I want to perform a http request on android to the address "address" with the string "message" ? Also I'd like to check the server response and perform some actions if the right conditions meet , but I ' m unsure of how and when the server send back the response . My guess is that the response is gotten in a blocking function, or in an asynchronous function . Could you provide code or information on this as well ? Great thanks from a novice with too much on his head !

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  • Return parent of node in Binary Tree

    - by user188995
    I'm writing a code to return the parent of any node, but I'm getting stuck. I don't want to use any predefined ADTs. //Assume that nodes are represented by numbers from 1...n where 1=root and even //nos.=left child and odd nos=right child. public int parent(Node node){ if (node % 2 == 0){ if (root.left==node) return root; else return parent(root.left); } //same case for right } But this program is not working and giving wrong results. My basic algorithm is that the program starts from the root checks if it is on left or on the right. If it's the child or if the node that was queried else, recurses it with the child.

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  • How can Excel 2007 / 2010 consume a REST web service?

    - by jallen
    What options exist to consume a REST web service from within Excel 2007 / 2010? I can use XML Maps to consume a basic XML list, but that doesn't let me build a dynamic URL (so I could include parameters). For example, I can add an XML Map to Excel for http://machine/service/level/5 and display the values in the workbook just fine - no problem there. The real question is, how can I dynamically change the /5 part of the URL to come from another cell in excel? That way I can have a couple of cells that have the options (what ID, what name, etc.) and whenever those values change (ideally) a new dynamic URL would be constructed and the XML map would be refreshed. Is such a thing possible? Does anyone else have a better way to take some parameters, call a web service (REST or SOAP, I'm not picky) and shove the results back into excel for further manipulation?

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  • Decimal point removed from decimals in a Serialized XML

    - by MiguelM
    I'm using XmlSerializer with classes created from a xsd using xsd.exe. It has worked fine for months. Now I'm receiving reports that in some cases the created xml file has all decimals serialized without a decimal point, e.g. 123.45 is serialized as 12345. I haven't been able to reproduce the problem, but I'm suspecting it may be related to localization. This is my first C# project, so I may be overlooking something basic. Could localization cause this problem? How can I make the serialization process locale independent? Any idea of something else that could cause this problem?

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  • Can't compile grails Tomcat plugin

    - by Jeff Beck
    I'm using Netbeans to build a Grails app, while I have used this fine before on this new computer I can not get even the basic project to compile and run. I am getting errors around compiling the Tomcat plugin. If I uninstall the plugin it and use Jetty instead it will compile but the project isn't set up for Jetty and is missing files. Below is the error I'm getting I'm thinking it is some issue with my classpath but I just don't know where to start any help would be much appreciated. java.lang.NoClassDefFoundError: org/apache/catalina/startup/Tomcat$ExistingStandardWrapper

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  • ASP.NET MVC: trying out a script injection hangs Visual Studio 2010 completely?

    - by Mark Redman
    Wondering if anyone has an idea of whats going on: I am new to ASP.NET MVC and am trying out a few things with jquery/ajax. The basic scenario is a dropdownlist with an add button next to it. Clicking the add button launches a jquery ui dialog with a textbox form, entering a value saves the item to the database and refreshes the drop-downlist. The dropdownlist is re-populated using a JSON result. This all works ok. I thought I would try a script injetion attack, ie add the text: alert("oh dear") to seee what would happen and to check if I need to encode anything. When I try and save this item (similar to the same process of adding a plain text entry) Visual Studio 2010 Beta 2 hangs completely. Any ideas? UPDATE: It happens when posting: "</"

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  • implementing type inference

    - by deepblue
    well I see some interesting discussions here about static vs. dynamic typing I generally prefer static typing, due to compile type checking, better documented code,etc. However I do agree that they do clutter up the code if done the way Java does it, for example. so Im about to start building a language of my own and type inference is one of the things that I want to implement, in a functional style language... I do understand that it is a big subject, and Im not trying to create something that has not been done before, just basic inferencing... any pointers on what to read up that will help me with this? preferably something more pragmatic/practical as oppose to more theoretical category theory/type theory texts. If there's a implementation discussion text out here, with data structures/algorithms, that would just be lovely much appreciated

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  • Is there any significant benefit to reading string directly from control instead of moving it into a

    - by Kevin
    sqlInsertFrame.Parameters.AddWithValue("@UserName", txtUserName.txt); Given the code above...if I don't have any need to move the textbox data into a string variable, is it best to read the data directly from the control? In terms of performance, it would seem smartest to not create any unnecessary variables which use up memory if its not needed. Or is this a situation where its technically true but doesn't yield any real world results due to the size of the data in question. Forgive me, I know this is a very basic question.

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  • Why does my regex fail when the number ends in 0?

    - by Russell C.
    This is a really basic regex question but since I can't seem to figure out why the match is failing in certain circumstances I figured I'd post it to see if anyone else can point out what I'm missing. I'm trying to pull out the 2 sets of digits from strings of the form: 12309123098_102938120938120938 1321312_103810312032123 123123123_10983094854905490 38293827_1293120938129308 I'm using the following code to process each string: if($string && $string =~ /^(\d)+_(\d)+$/) { if(IsInteger($1) && IsInteger($2)) { print "success ('$1','$2')"; } else { print "fail"; } } Where the IsInterger() function is as follows: sub IsInteger { my $integer = shift; if($integer && $integer =~ /^\d+$/) { return 1; } return; } This function seems to work most of the time but fails on the following for some reason: 1287123437_1268098784380 1287123437_1267589971660 Any ideas on why these fail while others succeed? Thanks in advance for your help!

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  • Is there a a C-like way to get item number from enum in java ?

    - by Hernán Eche
    Perhap this is a simple basic question Having an enum public enum TK{ ID,GROUP,DATA,FAIL; } Can I get the order number for example ID=0, GROUP=2, DATA=3, FAIL=4 ? This is a way to to that, but a weird and long one! =S public enum TK{ ID(0),GROUP(1),DATA(2),FAIL(3); int num; TK(int n) { this.num=n; } public int get() { return num; } }; to get numbers so I write TK.ID.get(), TK.GROUP.get(), etc... I don't like that there is a better way? ( C enums, C macros..I miss you both ) thanks

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  • How do you encrypt data between client and server running in Flash and Java?

    - by ArmlessJohn
    We have a multiclient system where the client is written in Flash and the server is written in Java. Currently, communication is done in Flash by usage of flash.net.Socket and the protocol is written in JSON. The server uses a custom port to receive connections and then proceed to talk with each client. As expected, data is sent and received on both fronts as raw bytes, which are then decoded as needed. We would like to encrypt the communication between clients and server. I have some basic understanding about public/private key encryption, but I do not know what is the best way to exchange keys or what libraries are available (on both languages) to do this. What would be the best strategy to attack this problem and where should I start looking for libraries/methods to implement this encryption?

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  • How do I parse this invalid JSON string in jQuery?

    - by LesterDove
    Hi, I am looking to access the various bits of data in this data attribute: <div class="location" data="{id: 4, point: {lng: -71.413364, lat: 41.673681}, category: 'Restaurant'}"> The data attribute is easy enough to reach in jQuery, of course. But the string seems to be a non-standard or invalid form of JSON. I've tried JSON.parse() and also a basic JS method of splitting the array. By all accounts, it just seems to be an invalidly-serialized string. Will I need to reformat the data string? (it doesn't come from me, and it's used by other routines that I'd rather not break, so...)

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  • CSS: How to affect OTHER elements when a div is hovered

    - by Trufa
    I think this is a very basic question but I not sure how/if it can be done. What I want to do is to is a certain div is hovered, affect the properties of another div. For example, in this simple example when you hover over #cube it changes the background-color but what I that when I hover over #container, #cubeis affected. I don't want to explain further cause I think it might be confusing, but please ask the the question is no clear enough!! Thanks in advance!! jQueriers: abstain yourselves!! only CSS answers :)

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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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