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  • Boost Python : How to only expose the constructor of a class with virtual (pure & impure) methods

    - by fallino
    Hello, I'm a newbie with Boost::Python but I tried to search on the web to do so I want to expose a 3rd party library to Python. One of the class of the library (.hpp) is composed of a public constructor with arguments a protected constructor and functions various regular functions various pure virtual functions various non pure virtual functions First, I did not succeed in building it without having errors about this protected constructor. I finally commented it. A first question would be : Is there a way to exclude these protected functions since I don't want to expose them ? (I know it's possible and easy with Py++, but I started without using it) Then I tried to expose all of my functions, beginning with the pure virtual ones (commenting them all except one), which wasn't a success too So I finally decided not to expose these virtual functions (which in fact seems logical...), but, here again, I didn't manage building it with a simple constructor with arguments (without no_init). So my second question is : Is there a way to exclude these virtual functions since I don't want to expose them ? Sorry if it seems trivial but I didn't find anything explicit on the web and I need something rather explicit :). Thanks in advance

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  • Getting EXC_BAD_ACCESS without any helpful msg from NSZombieEnabled

    - by nefsu
    Hello guys. I'm a newbie to iphone development and I've been struggling with an EXC_BAD_ACCESS error I got a couple of days ago. I'm basically taking the Stanford iphone class independently and I am trying to pass an array of NSManagedObjects to a TableViewController that's supposed to display them. The application launches in the simulator and displays the data in the tableView but it immediately errors out with an EXC_BAD_ACCESS. I followed instructions here and other places on how to use NSZombieEnabled to identify prematurely released objects but this one comes without any helpful msgs even with NSZombieEnabled. My guess is it must be caused by something trying to access unassigned memory that wasn't released through release/autorelease. Or else it would have been picked up as zombie object like the other errors I have been able to fix. I'm not a c expert but does that mean something like that could happen if I were to declare an object and send it a message without ever instantiating it? I looked through my code to see if I had anything like that and I came up empty. I have the stack trace in the debugger for this but I'm not sure how to make use of it. I'm a little frustrated because I can't use breakpoints in the code to narrow down the problem any further since it seems to happen after the app has finished loading. I thought the app would just stay idle if there was no possible user interaction. Is it failing at the tail end of the load where I can't easy see it or is jut doing stuff in the background after it's done loading. And I would much appreciate any tips on how to read the stacktrace for this. Thanks for the help guys.

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  • Determing size of visible area of a ScrollingGraphicalViewer in Eclipse GEF

    - by Simon
    I am attempting to create a simple application using Eclipse GEF that displays a diagram inside a ScrollingGraphicalViewer. On start-up I want the diagram to be centered inside the viewer (imagine a star layout where the center of the star is in the center of the view). Here are what I think are the relevant code sections: My view: public class View extends ViewPart { public static final String ID = "GEFProofOfConcept.view"; ... public void createPartControl(Composite parent) { viewer.createControl(parent); viewer.setRootEditPart(rootEditPart); viewer.setEditPartFactory(editPartFactory); viewer.setContents(DummyModelCreator.generateModel()); } The edit part code: @Override protected void refreshVisuals() { Project project = (Project) getModel(); // This is where the actual drawing is done, // Simply a rectangle with text Rectangle bounds = new Rectangle(50, 50, 75, 50); getFigure().setBounds(bounds); Label label = new Label(project.getName()); projectFont = new Font(null, "Arial", 6, SWT.NORMAL); label.setFont(projectFont); label.setTextAlignment(PositionConstants.CENTER); label.setBounds(bounds.crop(IFigure.NO_INSETS)); getFigure().add(label); setLocation(); } private void setLocation() { Project project = (Project) getModel(); if (project.isRoot()) { // Place in centre of the layout Point centrePoint = new Point(0, 0); // This is where I need the center of the view getFigure().setLocation(centrePoint); } else { ... } } And the parent of the above edit part: public class ProjectDependencyModelEditPart extends AbstractGraphicalEditPart { @Override protected IFigure createFigure() { Figure f = new FreeformLayer(); f.setLayoutManager(new XYLayout()); return f; } ... Alternative solutions to the problem also welcome, I am most certainly a GEF (and Eclipse in general) newbie.

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  • Netbeans and EOF

    - by sqlnoob
    Hey there, Java, ANTLR and Netbeans newbie here. I have installed a jdk and netbeans. I started a new project on netbeans 6.8 and i have added the antlr-3.2.jar as a library. I also created a lexer and parser class using AntlrWorks. These classes are named ExprParser.java and ExprLexer.java. I copied them into a directory named path-to-netbeans-project/src/parsers. I have a main file: package javaapplication2; import org.antlr.runtime.*; import parsers.*; public class Main { public static void main(String[] args) throws Exception{ ANTLRInputStream input = new ANTLRInputStream(System.in); ExprLexer lexer = new ExprLexer(input); CommonTokenStream tokens = new CommonTokenStream(lexer); ExprParser parser = new ExprParser(tokens); parser.prog(); } } The application builds fine. The book I'm reading says I should run the program and type in some stuff and then press Ctrl+Z (I'm on windows) to send EOF to the console. Problem is that nothing happens when I press Ctrl+z in the netbeans console. When I run from the command line, ctrl+z works fine. This is probably WAY too much information, but I can't figure it out. Sorry. Probably not a good idea to learn 3 new technologies at once.

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  • visual studio 2008 vs 2010 Pro unmanaged code

    - by bartek
    Hi, I'm a C++ programmer, I use Visual Studio 2008 Professional, only unmanaged code. I'm thinking of buying VS 2010 Pro. I'm confused, I don't know what are differences between those two. I know that, in plus, it has tr1 included. When I started using 2008 edition I was very pleased to see f.e. unit testing support but all new features are only for managed code. The C++ debugger in 2008 is very good, better than 2003 edition one. I would't like to buy a new tool and discover that I gained nothing and lost some functionality ( because f.e. something was moved to higher version). Once upon a time I switched from very good VS6 to VS 2003.Net and imagine what, after some time I discovered that Pro has no support for code optimalization. It is wonderful how Microsoft makes money. I wouldn't like to experience something like that again. What do you think, what can you recommended?

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  • Sum of XML duration elements in SQL2008

    - by Matt
    I have a XML column that holds information about my games. Here's a sample of the information looks like. <game xmlns="http://my.name.space" > <move> <player>PlayerA</player> <start movetype="Move">EE5</start> <end movetype="Move">DF6</end> <movetime>PT1S</movetime> </move> <move> <player>PlayerB</player> <start movetype="Move">CG7</start> <end movetype="Move">DE6</end> <movetime>PT3S</movetime> </move> <move> <player>PlayerA</player> <start movetype="Move">FD3</start> <end movetype="Move">EG8</end> <movetime>PT4S</movetime> </move> </game> I'm trying to design an XML query to take the sum of my movetime element. Basically I need the sum of each players move time. So using the above sample, PlayerA would have a total move time of 5 seconds and PlayerB would have a total move time of 3 seconds. Here's the XML query that I've been currently been working with SELECT GameHistory.query('declare default element namespace "http://my.name.space"; data(/game/move/movetime)') AS Value FROM GamesWHERE Id=560 I'm a newbie to XSLT / XPATH functions :P

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  • subsonic . navigate among records ,view,query

    - by gmo camilo
    hello everybody i'm some newbie in this matter of .net i'm trying understand this new paradigm i began with linq for SQl but i found this library, kind of framework of T4 more specifically: subsonic T4 i think it could be very usefull but the support docs outside are very scarce my first intention is use them in the very simple form: a catalog lets say... Users so... how can i use the model generated with subsonic ( using the iactiverecord) to implement the record-navigational part.,...???!!! i mean i want a simple form to create, delete or modify records and that is fairy easy but what about to move among records ? i found how to get the first, the last record.. but how can i advance or go back among them??? how can i order the records..? it seems everytime imust query the table.. its so? but how can imove among the records i already got? all of the exmples found are very simple dont touch the matter and/ or are repetitive everywhere so.. please if anybody can help me or give more references... i'd thank you a lot gmo camilo

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  • Project Euler: Programmatic Optimization for Problem 7?

    - by bmucklow
    So I would call myself a fairly novice programmer as I focused mostly on hardware in my schooling and not a lot of Computer Science courses. So I solved Problem 7 of Project Euler: By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10001st prime number? I managed to solve this without problem in Java, but when I ran my solution it took 8 and change seconds to run. I was wondering how this could be optimized from a programming standpoint, not a mathematical standpoint. Is the array looping and while statements the main things eating up processing time? And how could this be optimized? Again not looking for a fancy mathematical equation..there are plenty of those in the solution thread. SPOILER My solution is listed below. public class PrimeNumberList { private ArrayList<BigInteger> primesList = new ArrayList<BigInteger>(); public void fillList(int numberOfPrimes) { primesList.add(new BigInteger("2")); primesList.add(new BigInteger("3")); while (primesList.size() < numberOfPrimes){ getNextPrime(); } } private void getNextPrime() { BigInteger lastPrime = primesList.get(primesList.size()-1); BigInteger currentTestNumber = lastPrime; BigInteger modulusResult; boolean prime = false; while(!prime){ prime = true; currentTestNumber = currentTestNumber.add(new BigInteger("2")); for (BigInteger bi : primesList){ modulusResult = currentTestNumber.mod(bi); if (modulusResult.equals(BigInteger.ZERO)){ prime = false; break; } } if(prime){ primesList.add(currentTestNumber); } } } public BigInteger get(int primeTerm) { return primesList.get(primeTerm - 1); } }

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  • PHP, jQuery and Ajax Object Orientation

    - by pastylegs
    I'm a fairly experienced programmer getting my head around PHP and Ajax for the first time, and I'm having a bit of trouble figuring out how to incorperate object oriented PHP into my ajax webapp. I have an admin page (admin.php) that will load and write information (info.xml) from an XML file depending on the users selection of a form on the admin page. I have decided to use an object (ContentManager.php) to manage the loading and writing of the XML file to disk, i.e : class ContentManager{ var $xml_attribute_1 ... function __construct(){ //load the xml file from disk and save its contents into variables $xml_attribute = simplexml_load_file(/path/to/xml) } function get_xml_contents(){ return xml_attribute; } function write_xml($contents_{ } function print_xml(){ } } I create the ContentManager object in admin.php like so <?php include '../includes/CompetitionManager.php'; $cm = new CompetitionManager() ?> <script> ...all my jquery </script> <html> ... all my form elements </html> So now I want to use AJAX to allow the user to retrieve information from the XML file via the ContentManger app using an interface (ajax_handler.php) like so <?php if(_POST[]=="get_a"){ }else if() } ... ?> I understand how this would work if I wasn't using objects, i.e. the hander php file would do a certain action depending on a variable in the .post request, but with my setup, I can't see how I can get a reference to the ContentManager object I have created in admin.php in the ajax_handler.php file? Maybe my understanding of php object scope is flawed. Anyway, if anyone can make sense of what I'm trying to do, I would appreciate some help!

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  • Eclipse PDE - Plug-in, Feature, and Product Versioning

    - by Michael
    I am having much confusion over the process of upgrading version numbers in dependent plug-ins, features, and products in a fairly large eclipse workspace. I have made API changes to java code residing in an existing plug-in and thus requires an increase of the Major part of the version identifier. This plug-in serves as a dependency to a given feature, where the feature is later included in a product. From the documentation at http://wiki.eclipse.org/Version_Numbering, I understand (for the most part) when the proper number should be increased on the containing plug-in itself. However, how would this Major version number change on the plug-in affect dependent, "down-the-line" items (e.g., features, products)? For example, assume we have the typical "Hello World" setup as follows: Plug-in: com.example.helloworld, version 1.0.0 Feature: com.example.helloworld.feature, version 1.0.0 Product: com.example.helloworld.product, version 1.0.0 If I were to make an API change in the plug-in, this would require a version update to be that of 2.0.0. What would then be the version of the feature, 1.1.0? The same question can be applied for the product level as well (e.g., if the feature is 1.1.0 OR 2.0.0, what is the product version number)? I'm sure this is quite the newbie question so I apologize for wasting anyone's time and effort. I have searched for this type of content but all I am finding is are examples showing how to develop a plug-in, feature, product, and update site for the first time. The only other content related to my search has been developing feature patches and have not touched on the versioning aspect as much as I would prefer. I am having difficulty coming into (for the first time) an Eclipse RCP / PDE environment and need to learn the proper way and / or best practices for making such versioning updates and how to best reflect this throughout other dependent projects in the workspace.

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  • How Random is System.Guid.NewGuid()? (Take two)

    - by Vilx-
    Before you start marking this as a duplicate, read me out. The other question has a (most likely) incorrect accepted answer. I do not know how .NET generates its GUIDs, probably only Microsoft does, but there's a high chance it simply calls CoCreateGuid(). That function however is documented to be calling UuidCreate(). And the algorithms for creating an UUID are pretty well documented. Long story short, be as it may, it seems that System.Guid.NewGuid() indeed uses version 4 UUID generation algorithm, because all the GUIDs it generates matches the criteria (see for yourself, I tried a couple million GUIDs, they all matched). In other words, these GUIDs are almost random, except for a few known bits. This then again raises the question - how random IS this random? As every good little programmer knows, a pseudo-random number algorithm is only as random as its seed (aka entropy). So what is the seed for UuidCreate()? How ofter is the PRNG re-seeded? Is it cryptographically strong, or can I expect the same GUIDs to start pouring out if two computers accidentally call System.Guid.NewGuid() at the same time? And can the state of the PRNG be guessed if sufficiently many sequentially generated GUIDs are gathered?

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  • Prefix for element not bound

    - by Tim
    Hello! I am a newbie in Flex development and using Flash Builder 4 with SDK 4. Now I get the error that "the prefix "fx" for element "fx:Style" is not bound" in line number 4. I searched for it, and it has sth. to do with namespaces, but I can not solve it by myelf. I have the file called "UserStory.mxml" in the directory "components" to place it via the main.mxml onto the screen: <fx:Script> <![CDATA[ import components.UserStory; private function init():void { var userStory1:UserStory = new UserStory(); userStory1.x = 100; userStory1.y = 100; userStory1.userStoryText = "test"; this.addChild(userStory1); } ]]> </fx:Script> The file in which the error occurs in line no. 4: <?xml version="1.0" encoding="utf-8"?> <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="300" height="150" styleName="userstory"> <fx:Style source="styles/styles.css"/> <fx:Text x="5" y="5" width="275" height="135" text="{userStoryText}" fontFamily="notes" fontSize="18"/> <mx:Script> ... </mx:Script> </mx:Canvas> Can someone tell me what's wrong? Thanks a lot in advance & Best Regards.

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  • Ability to draw and record a signature as part of a form - iphone

    - by mustic
    Apolgies in advance for any errors.. new to this and am not a developer/programmer.. just have some basic unix experience. I have searched the web and struggled to find a solution to my problem when I stumbled onto this website which maybe suggested that there is a solution to my question. For work i use a windows mobile device because we have to get customers to sign and form after a customer visit. the signature being very important. On the windows device i use the notes application and am able to record details and obtain/record (using draw) a customer signature. the form is then emailed back to HQ. The format being used is a *.pwi I have downloaded and paid for several applications for my iphone which is my preferred device and cant quite find anything that does both. the critical bit here is to be able to take a signature on the phone, save the doc in a format such as .txt, .doc or .pdf where i can control the file name then be able to email back to HQ. Am i asking too much? I hope that makes sense.. Any help would be much appreciated many thanks in advance

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  • Sending custom PyQt signals?

    - by Enfors
    I'm practicing PyQt and (Q)threads by making a simple Twitter client. I have two Qthreads. Main/GUI thread. Twitter fetch thread - fetches data from Twitter every X minutes. So, every X minutes my Twitter thread downloads a new set of status updates (a Python list). I want to hand this list over to the Main/GUI thread, so that it can update the window with these statuses. I'm assuming that I should be using the signal / slot system to transfer the "statuses" Python list from the Twitter thread, to the Main/GUI thread. So, my question is twofold: How do I send the statuses from the Twitter thread? How do I receive them in the Main/GUI thread? As far as I can tell, PyQt can by default only send PyQt-objects via signals / slots. I think I'm supposed to somehow register a custom signal which I can then send, but the documentation on this that I've found is very unclear to a newbie like me. I have a PyQt book on order, but it won't arrive in another week, and I don't want to wait until then. :-) I'm using PyQt 4.6-1 on Ubuntu Update: This is an excert from the code that doesn't work. First, I try to "connect" the signal ("newStatuses", a name I just made up) to the function self.update_tweet_list in the Main/GUI thread: QtCore.QObject.connect(self.twit_in, QtCore.SIGNAL("newStatuses (statuses)"), self.update_tweet_list) Then, in the Twitter thread, I do this: self.emit(SIGNAL("newStatuses (statuses)"), statuses) When this line is called, I get the following message: QObject::connect: Cannot queue arguments of type 'statuses' (Make sure 'statuses' is registered using qRegisterMetaType().) I did a search for qRegisterMetaType() but I didn't find anything relating to Python that I could understand.

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  • Looking for examples of "real" uses of continuations

    - by Sébastien RoccaSerra
    I'm trying to grasp the concept of continuations and I found several small teaching examples like this one from the Wikipedia article: (define the-continuation #f) (define (test) (let ((i 0)) ; call/cc calls its first function argument, passing ; a continuation variable representing this point in ; the program as the argument to that function. ; ; In this case, the function argument assigns that ; continuation to the variable the-continuation. ; (call/cc (lambda (k) (set! the-continuation k))) ; ; The next time the-continuation is called, we start here. (set! i (+ i 1)) i)) I understand what this little function does, but I can't see any obvious application of it. While I don't expect to use continuations all over my code anytime soon, I wish I knew a few cases where they can be appropriate. So I'm looking for more explicitely usefull code samples of what continuations can offer me as a programmer. Cheers!

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  • Help! I've learned jQuery... now I want to learn JavaScript

    - by Derek Adair
    I am a self-taught web developer/programmer. I started out about two years ago by learning how to make simple dynamic websites with HTML/CSS/PHP. Then I started dabbling with animation... Enter jQuery I've become quite proficient with jQuery over the last year and I've even started making my own plugins. I've spent most of my effort learning how to beautify websites with fancy effects and what not. Upon tackling my first full-blown application, I realized how under-developed my knowledge of JavaScript actually is. jQuery has allowed me to rely on its framework so heavily that I rarely use any interesting functions, techniques, or whatever that are 'native' to the JavaScript language. For example: I have a basic understanding of what a closure is... but I am unsure where this technique can actually benefit me. Although as I understand it, that's what my jQuery plugins do with (function ($){//plugin code here})(jQuery). I've seen many posts/blogs/whatever about memory leaks and circular references which is concerning. I'm frustrated because I can wrap my head around the basic concepts of what these are just by reading the articles, but I'm finding that the deeper I go the more I don't understand. The vocabulary alone is burdensome. Let alone how to actually use these techniques/functions/language features. I am trying to figure out what I don't know I'm looking to gather any advice, techniques, articles, books, videos, snippets, examples, potential pitfalls... really anything you have regarding application development with JavaScript/jQuery.

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  • How do I change an attribute in an HTML table's cell if I know the row and column index of the cell?

    - by Mark
    I know nothing about jQuery but am an experienced C++ programmer (not sure if that helps or hurts). I found jQuery code that gives me the row and column index of a cell in an HTML table when a user clicks on that cell. Using such row-column index numbers, I need to change an attribute's value in the previously selected cell and in the cell just clicked. The index numbers are produced and saved with this code: var $trCurrent = 0; // Index of cell selected when page opens var $tdCurrent = 0; // i.e., previously selected cell $(document).ready(function () { $("td").click(function () { // How toclear previously selected cell's attribute here? ('class', 'recent') var oTr = $(this).parents("tr"); $tdCurrent = oTr.children("td").index(this); }); $("tr").click(function () { $trCurrent = $(this)[0].rowIndex; // How to set new attributes here? ('class', 'current'); // and continue work using information from currently selected cell }); }); Any help or hints would be appreciated. I do not even know if this is the way I should get the index of the row and column. Thanks.

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  • Where my memory is alloced, Stack or Heap, Can I find it at Run-time?

    - by AKN
    I know that memory alloced using new, gets its space in heap, and so we need to delete it before program ends, to avoid memory leak. Let's look at this program... Case 1: char *MyData = new char[20]; _tcscpy(MyData,"Value"); . . . delete[] MyData; MyData = NULL; Case 2: char *MyData = new char[20]; MyData = "Value"; . . . delete[] MyData; MyData = NULL; In case 2, instead of allocating value to the heap memory, it is pointing to a string literal. Now when we do a delete it would crash, AS EXPECTED, since it is not trying to delete a heap memory. Is there a way to know where the pointer is pointing to heap or stack? By this the programmer Will not try to delete any stack memory He can investigate why does this ponter, that was pointing to a heap memory initially, is made to refer local literals? What happened to the heap memory in the middle? Is it being made to point by another pointer and delete elsewhere and all that?

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  • SQL (mySQL) update some value in all records processed by a select

    - by jdmuys
    I am using mySQL from their C API, but that shouldn't be relevant. My code must process records from a table that match some criteria, and then update the said records to flag them as processed. The lines in the table are modified/inserted/deleted by another process I don't control. I am afraid in the following, the UPDATE might flag some records erroneously since the set of records matching might have changed between step 1 and step 3. SELECT * FROM myTable WHERE <CONDITION>; # step 1 <iterate over the selected set of lines. This may take some time.> # step 2 UPDATE myTable SET processed=1 WHERE <CONDITION> # step 3 What's the smart way to ensure that the UPDATE updates all the lines processed, and only them? A transaction doesn't seem to fit the bill as it doesn't provide isolation of that sort: a recently modified record not in the originally selected set might still be targeted by the UPDATE statement. For the same reason, SELECT ... FOR UPDATE doesn't seem to help, though it sounds promising :-) The only way I can see is to use a temporary table to memorize the set of rows to be processed, doing something like: CREATE TEMPORARY TABLE workOrder (jobId INT(11)); INSERT INTO workOrder SELECT myID as jobId FROM myTable WHERE <CONDITION>; SELECT * FROM myTable WHERE myID IN (SELECT * FROM workOrder); <iterate over the selected set of lines. This may take some time.> UPDATE myTable SET processed=1 WHERE myID IN (SELECT * FROM workOrder); DROP TABLE workOrder; But this seems wasteful and not very efficient. Is there anything smarter? Many thanks from a SQL newbie.

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  • SIMPLE PHP MVC Framework!

    - by Allen
    I need a simple and basic MVC example to get me started. I dont want to use any of the available packaged frameworks. I am in need of a simple example of a simple PHP MVC framework that would allow, at most, the basic creation of a simple multi-page site. I am asking for a simple example because I learn best from simple real world examples. Big popular frameworks (such as code ignighter) are to much for me to even try to understand and any other "simple" example I have found are not well explained or seem a little sketchy in general. I should add that most examples of simple MVC frameworks I see use mod_rewrite (for URL routing) or some other Apache-only method. I run PHP on IIS. I need to be able to understand a basic MVC framework, so that I could develop my own that would allow me to easily extend functionality with classes. I am at the point where I understand basic design patterns and MVC pretty well. I understand them in theory, but when it comes down to actually building a real world, simple, well designed MVC framework in PHP, i'm stuck. I would really appreciate some help! Edit: I just want to note that I am looking for a simple example that an experienced programmer could whip up in under an hour. I mean simple as in bare bones simple. I dont want to use any huge frameworks, I am trying to roll my own. I need a decent SIMPLE example to get me going.

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  • PHP - CodeIgniter

    - by nXqd
    I try to write a site with CodeIgniter but I've a problem with PHP. I'm sure that it's so simple and can't be wrong. But I don't know bugs from , just a newbie of CodeIgniter :) <html> <head> <title><?=$page_title?></title> </head> <body> <?php foreach($result as $row):?> <h3><? echo $row->title; ?></h3> <p><? echo $row->text; ?></p> <?php endforeach;?> </body> </html> I've a bug from this file : A PHP Error was encountered Severity: Warning Message: Invalid argument supplied for foreach() Filename: views/helloworld_view.php Line Number: 6 thanks in advance for reading this :)

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  • What is a good standard exercise to learn the OO features of a language?

    - by FarmBoy
    When I'm learning a new language, I often program some mathematical functions to get used to the control flow syntax. After that, I like to implement some sorting algorithms to get used to the array/list constructs. But I don't have a standard exercise for exploring the languages OO features. Does anyone have a stock exercise for this? A good answer would naturally lend to inheritance, polymorphism, etc., for a programmer already comfortable with these concepts. An ideal answer would be one that could be communicated in a few words, without ambiguity, in the way that "implement mergesort" is completely unambiguous. (As an example, answering "design a game" is so vague as to be useless.) Any ideas? EDIT: I have to remark that the results here are somewhat ironic. 10 upvotes and (originally) 5 favorites suggest that this is a question others are interested in. Yet the most upvoted answer is one that says there is no good answer. Oh well. I think I'll look at the textbook below, I've found games useful in the past for OO.

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  • Android Scaled Drawing to ImageView

    - by user329999
    Newbie question, so there's probably a simple answer to this problem. I'm drawing some simple shapes using canvas.drawCircle(), canvas.drawLine() etc. I originally copied the code from: http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/DrawPoints.html Which extends a View and draws directly to a canvas. It doesn't load a pre-drawn bitmap because I need my application to turn data into a drawing and the user will enter the data. My changes work, but the drawing is too small (or big) and doesn't fill the screen using all the available screen. Ideally I'd rather use something like an ImageView in .XML like so: If that's possible. The documentation seems to imply that I want to set the scaleType as shown in the above .XML which seems like the simple way to do this. If using an ImageView in .XML is a good idea, then I'm lost on how to draw to the ImageView and could use some guidance on doing that task. If that won't work, then I'll need to do some more thinking about how to get my drawing scaled on the screen and basically I'm lazy and would rather have Android do the work for me. Feel free to suggest some other way that's completely different is this is the wrong solution path. :) Thanks.

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  • Do ruby on rails programmers refactor?

    - by JoaoHornburg
    I'm a Java programmer who started programming Ruby on Rails one year ago. I like the language, rails itself and the principles behind them. But something that bothers me is that Ruby programmers don't seem to refactor. I noticed that there is a big lack of tools for refactoring in Ruby / Rails. Some IDE's, like Aptana and RubyMine seem to offer some very basic refactoring, but nothing really big compared to Eclipse's Java refactorings. Then there is another fact: most railers (even the pros) prefer some lightweight editors, like VIM or TextMate, instead of IDEs. Well, with these tools you just get zero refactoring (only regex with find/replace). This leaves me this impression that rails programmers don't refactor. It might be just a false impression, of course, but I would like to hear the opinion of people who work professionally with ruby on rails. Do you refactor? If you do, how do you do it,with which tools? If not, why not?

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  • Visual Studio 2005 to VS 2008

    - by Adi
    hi all, I am a newbie in working on VS IDE and have not much experience in how the different libraries and files are linked in it. I have to build a OpenCV project which was made in VS2005 by one of my colleagues into VS2008. The project is for blob detection. Following is what he has to say in readme : Steps to use the library (using MSVC++ sp 5): 1 - open the project of the library and build it 2 - in the project where the library should be used, add: 2.1 In "Project/Settings/C++/Preprocessor/Additional Include directories" add the directory where the blob library is stored 2.2 In "Project/Settings/Link/Input/Additional library path" add the directory where the blob library is stored and in "Object/Library modules" add the cvblobslib.lib file 3- Include the file "BlobResult.h" where you want to use blob variables. 4- To see an example on using the blob library, see the file example.txt inside the zip file. NOTE: Verify that in the project where the cvblobslib.lib is used, the MFC Runtime Libraries are not mixed: Check in "Project-Settings-C/C++-Code Generation-Use run-time library" of your project and set it to Debug Multithreaded DLL (debug version ) or to Multithreaded DLL ( release version ). 2 Check in "Project-Settings-General" how it uses the MFC. It should be "Use MFC in a shared DLL". NOTE: The library can be compiled and used in .NET using this steps, but the menu options may differ a little NOTE2: In the .NET version, the character sets must be equal in the .lib and in the project. [OpenCV yahoo group: Msg 35500] Can anyone explain me , how to go about in doing this in VS2008. I would also appreciate if someone can explain me how the different libraries are linked , what is Debug, What is Release and all in a Visual Studio project folder we have.\ Thanks in advance Aditya

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