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  • Java Iterators - Trying to get a for each loop to work

    - by CS Student
    So I have a Tree<E> class where E is the datatype held and organized by the tree. I'd like to iterate through the Tree like this, or in a way similar to this: 1. Tree<String> tree=new Tree<String>(); 2. ...add some nodes... 3. for (String s : tree) 4. System.out.println(s); It gives me an error on line 3 though. Incompatible types required: java.lang.String found: java.lang.Object The following works fine and as expected though, performing a proper in-order traversal of the tree and printing each node out as it should: for (TreeIterator<String> i = tree.iterator(); i.hasNext(); ) System.out.println(i.next()); Any idea what I'm doing wrong? Do you need to see more of the code?

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  • Getting Unit Tests to work with Komodo IDE for Python

    - by devoured elysium
    I've tried to run the following code on Komodo IDE (for python): import unittest class MathLibraryTests(unittest.TestCase): def test1Plus1Equals2(self): self.assertEqual(1+1, 2) Then, I created a new test plan, pointing to this project(file) directory and tried to run it the test plan. It seems to run but it doesn't seem to find any tests. If I try to run the following code with the "regular" run command (F7) class MathLibraryTests(unittest.TestCase): def testPlus1Equals2(self): self.assertEqual(1+1, 2) if __name__ == "__main__": unittest.main() it works. I get the following output: ---------------------------------------------------------------------- Ran 1 test in 0.000s OK What might I be doing wrong?

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  • How does PHP work - literature

    - by Ondrej Slinták
    I'm interested in literature (articles on internet, in magazines, books, podcasts - I don't really mind anything) that describes how PHP works internally, about its gotchas and perhaps some advanced functions. Is there anything like this out there? I tried to search on Google, but majority of articles were about starting with PHP and its basic functions. Any input is really welcome as I'm trying to understand the language internally - I'm tired of my mindless typing of code without understanding its essence.

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  • willSendRequest redirectResponse doesn't work in iPhone SDK2.0

    - by WholeIphone
    I use the delegate method connection:willSendRequest:redirectResponse: in SDK 2.2, the code like below: - (NSURLRequest *)connection:(NSURLConnection *)con willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse { if(redirectResponse) { if(!self.autoRedirect) { NSLog(@"response will redirect"); request = nil; } } return request; if the request is returned to nil ,it seems it hangs up here, and delegate didReceiveData will not get called. but it works in SDK 3. Any suggestions about this?

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  • How does this print stylesheet work?

    - by Martin
    I really like how http://www.honorshaven.com/ looks printed (to pdf). I've looked through the source to try to figure out how they did it (my navigation always turns into ugly bullet lists on print...) -- and I'm at a loss. Anyone know? Any help would be awesome! Thanks, Martin

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  • Getting logging.debug() to work on Google App Engine/Python

    - by brainjam
    I'm just getting started on building a Python app for Google App Engine. In the localhost environment I'm trying to send debug info to the GoogleAppEngineLauncher Log Console via logging.debug(), but it isn't showing up. However, anything sent through, say, logging.info() or logging.error() does show up. I've tried a logging.basicConfig(level=logging.DEBUG) before the logging.debug(), but to no avail. What am I missing?

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  • can't get texture to work

    - by user583713
    It been a while since I use android opengl but for what ever reason I get a white squre box and not the texture I what on the screen. Oh I do not think this would matter but just in case I put a linerlayout view first then the surfaceview on but anyway Here my code: public class GameEngine { private float vertices[]; private float textureUV[]; private int[] textureId = new int[1]; private FloatBuffer vertextBuffer; private FloatBuffer textureBuffer; private short indices[] = {0,1,2,2,1,3}; private ShortBuffer indexBuffer; private float x, y, z; private float rot, rotX, rotY, rotZ; public GameEngine() { } public void setEngine(float x, float y, float vertices[]){ this.x = x; this.y = y; this.vertices = vertices; ByteBuffer vbb = ByteBuffer.allocateDirect(this.vertices.length * 4); vbb.order(ByteOrder.nativeOrder()); vertextBuffer = vbb.asFloatBuffer(); vertextBuffer.put(this.vertices); vertextBuffer.position(0); vertextBuffer.clear(); ByteBuffer ibb = ByteBuffer.allocateDirect(indices.length * 2); ibb.order(ByteOrder.nativeOrder()); indexBuffer = ibb.asShortBuffer(); indexBuffer.put(indices); indexBuffer.position(0); indexBuffer.clear(); } public void draw(GL10 gl){ gl.glLoadIdentity(); gl.glTranslatef(x, y, z); gl.glRotatef(rot, rotX, rotY, rotZ); gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]); gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); gl.glVertexPointer(2, GL10.GL_FLOAT, 0, vertextBuffer); gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer); gl.glDrawElements(GL10.GL_TRIANGLES, indices.length, GL10.GL_UNSIGNED_SHORT, indexBuffer); gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY); } public void LoadTexture(float textureUV[], GL10 gl, InputStream is) throws IOException{ this.textureUV = textureUV; ByteBuffer tbb = ByteBuffer.allocateDirect(this.textureUV.length * 4); tbb.order(ByteOrder.nativeOrder()); textureBuffer = tbb.asFloatBuffer(); textureBuffer.put(this.textureUV); textureBuffer.position(0); textureBuffer.clear(); Bitmap bitmap = null; try{ bitmap = BitmapFactory.decodeStream(is); }finally{ try{ is.close(); is = null; gl.glGenTextures(1, textureId,0); gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); //Different possible texture parameters, e.g. GL10.GL_CLAMP_TO_EDGE gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT); //Use the Android GLUtils to specify a two-dimensional texture image from our bitmap GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0); gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA); //Clean up gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]); bitmap.recycle(); }catch(IOException e){ } } } public void setVector(float x, float y, float z){ this.x = x; this.y = y; this.z = z; } public void setRot(float rot, float x, float y, float z){ this.rot = rot; this.rotX = x; this.rotY = y; this.rotZ = z; } public float getZ(){ return z; } }

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  • Can I rename LOCAL, REMOTE and BASE as used in git mergetool?

    - by carleeto
    Lets say I'm doing a rebase B of a branch onto master and there's a conflict. git opens up the default merge tool with 3 files as input : file.LOCAL, file.BASE, file.REMOTE (they're named a little differently, but LOCAL, BASE and REMOTE are in the file names and is how they are distinguished). Now, according to the mergetool man page: $LOCAL is set to the name of a temporary file containing the contents of the file on the current branch; $REMOTE set to the name of a temporary file containing the contents of the file to be merged, and $BASE set to the name of a temporary file containing the common base for the merge. That really does not make sense to me. LOCAL is the current state of the branch. Where I get lost is BASE and REMOTE. So my question is : Is it possible to make git use the branch name instead of LOCAL and similarly more meaningful names other than BASE and REMOTE? For example, if the branch name is FeatureX and the BASE = the file as it exists in master, is there a way to get git to substitute FeatureX for LOCAL and master for BASE, so that it is more apparent where the source is coming from? This is especially a problem when doing a rebase.

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  • Rails redirect_to jQTouch site does not work as expected

    - by tilthouse
    I have a Rails app with a jQTouch mobile site that is displayed if the user goes to m.blah.com. First, I detect the browser, then to a redirect_to m.blah.com if it's an iphone, etc. All well and good. When I use desktop Safari, this all works exactly right. However, when I use an actual iPhone or the Apple iPhone Simulator, it does not. The mobile site appears to load without the browser actually doing the redirect. The URL in the browser is still www. I am wondering if this behavior is due to Mobile Safari, or if it is somehow jQTouch trying to load the page with AJAX, not a reload (which is odd as jQTouch hasn't been loaded at all before the redirect). Any ideas?

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  • Updating multiple tables with LinqToSql in one unit of work

    - by zsharp
    Table 1: int ID-a(pk) Table 2: int ID-a(pk), int ID-b(pk) Table 3: int ID-b(pk), string C I have the data to insert into Table 1. But I do not have the ID-a, which is autogenerated. I have many string C to insert in Table 3. I am trying to insert row into Table 1, get the ID-a to insert in Table 2 along with the ID-b that is auto-Generated in Table 3 when I submit each string C, all in one submission to db. Right now I am calling dc.SubmitChanges twice in same call. Is it efficient to have to submit changes twice on same DataContext or can this be combined further?

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  • Need to work out database structure

    - by jim smith
    Hi, Just need a little kickstart with this. I have Mysql/PHP, and I have 5,000 products. I have 30 companies I need to store some data for those 30 companies for each product as follows: a) prices b) stock qty I also need to store data historically on a daily basis. So the table... It makes sense that the records will be the products because there's 5000, and if I put the companies as the columns, I can store the prices, but what about the stock quantities? I could create two columns for each compoany, one for prices, one for qty. Then make the tablename the date for that day...so theer would be a new table for every day with 5000 products in it? is this the correct way? Some idea on how I'll be retreiving data the top 5 lowest prices (and the company) by product for a certain date the price and stock changes in the past 7 days by product

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  • JQuery val() does not work for textarea in Opera

    - by Anil Soman
    I am displaying a modal dialog using jQuery. This dialog has a textarea control on it. But on submitting this dialog, the value of this textarea is not recognized by jQyery for some reason. It always comes blank. This works perfectly in other browsers. I put alert to display the value but it looks blank. Can anybody help me in this regards? Controls <input type="text" id="txtGroupName"/> <textarea rows="3" cols="30" id="txtDescription"></textarea> jQuery code which used this value var postData = new Object(); postData.GroupName = $('#txtGroupName').val(); postData.Description = $('#txtDescription').val(); $('#txtDescription').val() comes blank but $('#txtGroupName').val() is read correctly as it is a input field. One more finding about this issue: When I put alert in my update function after populating the control value on page load, this alert displays the existing value properly. But it displays only existing value. It does not display the edited value after submitting the modal box.

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  • How does AssemblyName.ReferenceMatchesDefinition work?

    - by Fabian Schmied
    Given the following code: var n1 = new AssemblyName ("TestDll, Version=1.0.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089"); var n2 = new AssemblyName ("TestDll, Version=2.0.0.2001, Culture=en-US, PublicKeyToken=ab7a5c561934e089"); Console.WriteLine (AssemblyName.ReferenceMatchesDefinition (n1, n2)); Console.WriteLine (AssemblyName.ReferenceMatchesDefinition (n2, n1)); Why do both of these checks print "True"? I would have thought that AssemblyName.ReferenceMatchesDefinition should consider differences in the version, culture, and public key token attributes of an assembly name, shouldn't they? If not, what does ReferenceMatchesDefinition do that a comparison of the simple names doesn't?

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  • Would a Centralized Blogging Service Work?

    - by viatropos
    If there's a better place to ask this, please let me know. Every time I build a new website/blog/shopping-cart/etc., I keep trying to do the following: Extract out common functionality into reusable code (Rubygems and jQuery plugins mostly) If possible, convert that gem into a small service so I never have to deal with a database for the objects involved (by service, I mean something lean and mean, usually built with the Sinatra Web Framework with a few core models. My assumption is, if I can remove dependencies on local databases, that will make it easier and more scalable in the long run (scalable in terms of reusability and manageability, not necessarily database/performance). I'm not sure if that's a good or bad assumption yet. What do you think? I've made this assumption because of the following reason: Most serious database/model functionality has been built on the internet somewhere. Just to name a few: Social Network API: Facebook Messaging API: Twitter Mailing API: Google Event API: Eventbrite Shopping API: Shopify Comment API: Disqus Form API: Wufoo Image API: Picasa Video API: Youtube ... Each of those things are fairly complicated to build from scratch and to make as optimized, simple, and easy to use as those companies have. So if I build an app that shows pictures (picasa) on an Event page (eventbrite), and you can see who joined the event (facebook events), and send them emails (google apps api), and have them fill out monthly surveys (wufoo), and watch a video when they're done (youtube), all integrated into a custom, easy to use website, and I can do that without ever creating a local database, is that a good thing? I ask because there's two things missing from the puzzle that keep forcing me to create that local database: Post API RESTful/Pretty Url API While there's plenty of Blogging systems and APIs for them, there is no one place where you can just write content and have it part of some massive thing. For every app, I have to use code for creating pretty/restful urls, and that saves posts. But it seems like that should be a service! Question is, is that the main point of a website? Will everyone always need "their own blog"? Why not just have a profile and write lots of content on an established platform like StackOverflow or Facebook?

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  • PPR in tr:selectOneChoice does not work

    - by Nhut Le
    Hi, I have a simple testing page that test my PPR on a selectOneChoice component. when select a value from selectOnechoice 1, the selected value will display on a output label and also reset the selected value and the other selectOneChoice. However, it prints the selected values to the label correctly but it can't set the selected value for the other selectOneChoice. and Here are my page and my value change event method. <tr:form id="nhutForm"> <tr:selectOneChoice id="one" value="#{nhutTestBean.one}" autoSubmit="true" immediate="true" valueChangeListener="#{nhutTestBean.onMyValueChanged}"> <tr:selectItem label="0" value="0"/> <tr:selectItem label="1" value="1"/> <tr:selectItem label="2" value="2"/> <tr:selectItem label="3" value="3"/> </tr:selectOneChoice> <tr:selectOneChoice id="two" value="#{nhutTestBean.two}" partialTriggers="one"> <f:selectItems value="#{nhutTestBean.myList}"/> </tr:selectOneChoice> <tr:outputText id="nhutTextBox" value="hello: #{nhutTestBean.output}" partialTriggers="one"/></tr:form> and my valueChangeEvent method: public void onMyValueChanged(ValueChangeEvent event) { this.setOutput((String)event.getNewValue()); this.setTwo((String)event.getNewValue()); } One thing I realize is that it calls my setTwo twice, the first the set the correct values, but the second time set it to null so that nothing would be selected for the two drop down box. please help. thank you so much.

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  • Getting py2exe to work

    - by Richard
    Hello all. I am following the the tutorial at http://www.py2exe.org/index.cgi/Tutorial to figure out how to use py2exe. I get down to step 3 where you are suppose to run the command: python setup.py py2exe I do that and then I get this error: 'python' is not recognized as an internal or external command, operable program or batch file. I have python 2.4 installed on my machine. any idea's? I am sure it is something simple.

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  • Code don't work, can't read property 'className' of undefined

    - by Arlen Beiler
    What is wrong with this code? var divarray = []; var articleHTML = []; var absHTML; var keyHTML; var bodyHTML = []; var i = 0; divarray = document.getElementById("yui-main").getElementsByTagName("div"); for ( var j in divarray) { if(divarray[i].className == "articleBody"){ alert("found"); articleHTML = divarray[i]; break; } bodyHTML[i] = ''; if(articleHTML[i].className == "issueMiniFeature"){continue;} if(articleHTML[i].className == "abstract"){absHTML = articleHTML[i]; continue;} if(articleHTML[i].className == "journalKeywords"){keyHTML = articleHTML[i]; continue;} bodyHTML[i] = articleHTML[i]; i++; } The error I get is: TypeError: Cannot read property 'className' of undefined I am using Google Chrome.

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  • UIView animation doesn't work first time

    - by BobC
    Hello everybody, I have a seachButton in the navigation bar which upon hitting calls following method: - (IBAction)search:(id)sender { if (nil == searchViewController) searchViewController = [[SearchViewController alloc] initWithNibName:@"SearchViewController" bundle:nil]; searchViewController.view.backgroundColor = [UIColor clearColor]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:searchViewController.view cache:NO]; [self.view addSubview:searchViewController.view]; [UIView commitAnimations]; } It should load SearchViewController.xib which contains a view with UISearchBar and two buttons. When I call the search method for the first time, the view appears very quickly with some weird animation, when I call it again, the animation is alright. Does anyone have a clue what could be wrong?

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  • JSONArray does not work when I am getting the JSON string from the server

    - by Taehoon A Kim
    I've looked up some answers but am not sure why mine is failing exactly... The code looks something like this HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); String json = EntityUtils.toString(httpEntity); //Convert to JsonArray JSONArray jsonArray = new JSONArray(json); Log.i(DEBUG_TAG, Integer.toString(jsonArray.length())); for (int i = 0; i < jsonArray.length(); i++) { JSONObject jsonObject = jsonArray.getJSONObject(i); Log.i(DEBUG_TAG, jsonObject.getString(KEY_ID)); // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); // adding each child node to HashMap key => value map.put(KEY_ID, jsonObject.getString(KEY_ID)); map.put(KEY_TITLE, jsonObject.getString(KEY_TITLE)); map.put(KEY_ARTIST, jsonObject.getString(KEY_ARTIST)); map.put(KEY_DURATION, jsonObject.getString(KEY_DURATION)); map.put(KEY_VOTECOUNT, jsonObject.getString(KEY_VOTECOUNT)); map.put(KEY_THUMB_URL, jsonObject.getString(KEY_THUMB_URL)); map.put(KEY_GENRE, jsonObject.getString(KEY_GENRE)); //Adding map to ArrayList if (Integer.parseInt(jsonObject.getString(KEY_VOTECOUNT)) == -1){ //If VoteCount is -1 then add to header headerList.add(map); }else { songsList.add(map); } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } When I run logcat on String json, it seems to show correct info which is kind of like this... { "userdata": [ { "id": "8", "title": "Baby One More Time", "artist": "Britney Spears", "duration": "03:24:00", "votes": "0", "thumb_url": "http://api.androidhive.info/music/images/dido.png", "genre": null }, { "id": "2", "title": "As Long As You Love Me", "artist": "Justin Bieber", "duration": "05:26:00", "votes": "0", "thumb_url": "http://api.androidhive.info/music/images/enrique.png", "genre": "Rock" } ] } and the logcat on JSONArray jsonArray = new JSONArray(json); tells me that jsonArray.length() 10-31 22:57:28.433: W/CustomizedListView(26945): error! Invalid index 0, size is 0 Please let me know Thank you,

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  • MySQL indexes: how do they work?

    - by bob-the-destroyer
    I'm a complete newbie with MySQL indexes. I have several MyISAM tables on MySQL 5.0x having utf8 charsets and collations with 100k+ records each. The primary keys are generally integer. Many columns on each table may have duplicate values. I need to quickly count, sum, average, or otherwise perform custom calculations on any number of fields in each table or joined on any number of others. I found this page giving an overview of MySQL index usage: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html, but I'm still not sure I'm using indexes right. Just when I think I've made the perfect index out of a collection of fields I want to calculate against, I get the "index must be under 1000 bytes" error. Can anyone explain how to most efficiently create and use indexes to speed up queries? Caveat: upgrading Mysql is not possible in this case. Using Navicat Light for db administration, but this app isn't required.

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  • Android x86 porting, unable to make it work

    - by Mr G
    I'm kind of new to the whole porting issue and I got to it because of the slowness in the emulator provided with the Android SDK. I downloaded the android-x86-3.2-RC2-eeepc and android-x86-3.2-RC2-tegav2 ISO-es (from this site) and tried them on the VirtualBox but have no internet connection on the eeepc version and the tegev2 wont event start. I tried the VirtualBoxHowTo but got nothing, on both Windows and Linux platforms. the only thing I managed to understand is that to use this on a VM you need to build it for VM. Can anyone help me on this? P.S.: I need the HoneyComb version (3.2) and the pc I have is a AMD 6 core on and Asus Crosshair Extreme motherboard, Windows 7 or Ubunutu 11.10. (both OS are 64bit)

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  • Why wont this perl array sort work?

    - by Luke
    Why wont the array sort? CODE my @data = ('PJ RER Apts to Share|PROVIDENCE', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Condo|WEST WARWICK', 'PJ RER Condo|WARWICK'); foreach my $line (@data) { $count = @data; chomp($line); @fields = split(/\|/,$line); if ($fields[0] eq "PJ RER Apts to Share"){ @city = "\u\L$fields[1]"; @city_sort = sort (@city); print "@city_sort","\n"; } } print "$count","\n"; OUTPUT Providence Johnston Johnston Johnston 6

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