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• SVN naming convention: repository, branches, tags

  - by LookitsPuck

  Hey all! Just curious what your naming conventions are for the following: Repository name Branches Tags Right now, we're employing the following standards with SVN, but would like to improve on it: Each project has its own repository Each repository has a set of directories: tags, branches, trunk Tags are immutable copies of the the tree (release, beta, rc, etc.) Branches are typically feature branches Trunk is ongoing development (quick additions, bug fixes, etc.) Now, with that said, I'm curious how everyone is not only handling the naming of their repositories, but also their tags and branches. For example, do you employ a camel case structure for the project name? So, if your project is something like Backyard Baseball for Youngins, how do you handle that? backyardBaseballForYoungins backyard_baseball_for_youngins BackyardBaseballForYoungins backyardbaseballforyoungins That seems rather trivial, but it's a question. If you're going with the feature branch paradigm, how do you name your feature branches? After the feature itself in plain English? Some sort of versioning scheme? I.e. say you want to add functionality to the Backyard Baseball app that allows users to add their own statistics. What would you call your branch? {repoName}/branches/user-add-statistics {repoName}/branches/userAddStatistics {repoName}/branches/user_add_statistics etc. Or: {repoName}/branches/1.1.0.1 If you go the version route, how do you correlate the version numbers? It seems that feature branches wouldn't benefit much from a versioning schema, being that 1 developer could be working on the "user add statistics" functionality, and another developer could be working on the "admin add statistics" functionality. How are these do branch versions named? Are they better off being: {repoName}/branches/1.1.0.1 - user add statistics {repoName}/branches/1.1.0.2 - admin add statistics And once they're merged into the trunk, the trunk might increment appropriately? Tags seem like they'd benefit the most from version numbers. With that being said, how are you correlating the versions for your project (whether it be trunk, branch, tag, etc.) with SVN? I.e. how do you, as the developer, know that 1.1.1 has admin add statistics, and user add statistics functionality? How are these descriptive and linked? It'd make sense for tags to have release notes in each tag since they're immutable. But, yeah, what are your SVN policies going forward?

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• Dojo extending dojo.dnd.Source, move not happening. Ideas?

  - by Soulhuntre

  Hey all, Ok... I have a simple dojo page with the bare essentials. Three UL's with some LI's in them. The idea si to allow drag-n-drop among them but if any UL goes empty due to the last item being dragged out, I will put up a message to the user to gie them some instructions. In order to do that, I wanted to extend the dojo.dnd.Source dijit and add some intelligence. It seemed easy enough. To keep things simple (I am loading Dojo from a CDN) I am simply declating my extension as opposed to doing full on module load. The declaration function is here... function declare_mockupSmartDndUl(){ dojo.require("dojo.dnd.Source"); dojo.provide("mockup.SmartDndUl"); dojo.declare("mockup.SmartDndUl", dojo.dnd.Source, { markupFactory: function(params, node){ //params._skipStartup = true; return new mockup.SmartDndUl(node, params); }, onDndDrop: function(source, nodes, copy){ console.debug('onDndDrop!'); if(this == source){ // reordering items console.debug('moving items from us'); // DO SOMETHING HERE }else{ // moving items to us console.debug('moving items to us'); // DO SOMETHING HERE } console.debug('this = ' + this ); console.debug('source = ' + source ); console.debug('nodes = ' + nodes); console.debug('copy = ' + copy); return dojo.dnd.Source.prototype.onDndDrop.call(this, source, nodes, copy); } }); } I have a init function to use this to decorate the lists... dojo.addOnLoad(function(){ declare_mockupSmartDndUl(); if(dojo.byId('list1')){ //new mockup.SmartDndUl(dojo.byId('list1')); new dojo.dnd.Source(dojo.byId('list1')); } if(dojo.byId('list2')){ new mockup.SmartDndUl(dojo.byId('list2')); //new dojo.dnd.Source(dojo.byId('list2')); } if(dojo.byId('list3')){ new mockup.SmartDndUl(dojo.byId('list3')); //new dojo.dnd.Source(dojo.byId('list3')); } }); It is fine as far as it goes, you will notice I left "list1" as a standard dojo dnd source for testing. The problem is this - list1 will happily accept items from lists 2 & 3 who will move or copy as apprriate. However lists 2 & 3 refuce to accept items from list1. It is as if the DND operation is being cancelled, but the debugger does show the dojo.dnd.Source.prototype.onDndDrop.call happening, and the paramaters do look ok to me. Now, the documentation here is really weak, so the example I took some of this from may be way out of date (I am using 1.4). Can anyone fill me in on what might be the issue with my extension dijit? Thanks!

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• How to construct a flowchart/storyboard in a Func Spec

  - by PeterQ

  Hey I'm a bit embarrassed to write a post on this topic, but I would appreciate the help. At my school, the CS kids (myself included) have created a nice, little program that is built for incoming Chem/Bio students. It consists of several modules that reviews topics they should have a firm grasp on before they start their classes. It's a nice tool since it cuts down on reviewing the material in class but also allows the students to do a quick diagnostic to fix any problems. Now, I'm in charge of constructing a simple interface that reports on the progress of the group and individual students. The interface is pretty simple. It's just a window that pops up, and it has three tabs: the first tab is a "cumulative" report of all of students. The secnod tab has a drop down box that lists the students and once a student is selected, a report for him/her comes up. And the third tab is simply a description of all of the terms used in the 1st and 2nd tabs. Now, I'm trying to be a good CS student and write a func. spec for my interface. My problem comes with the fact that I'd like to insert a little flowchart using Visio. Problem is, and I'm quite embarrassed to admit this, I don't know how to construct the flowchart/storyboard. For instance, I know I start with a "Start/Click Icon" in a rectangle. Then where do I go? Do I draw three arrrows (one going to each tab) and then describing what goes on? In tab one, the only thing that happens is that the user will select a "sort" method in the drop down box. This will sort the list. The End. Similarly, if the user selects the second tab, then he will go to a drop down box with the student names. Selecting a name will bring up student info. And the third tab is just a list of unfamiliar terms coming from the first or second tab. I wanted to storyboard/flowchart what I'm doing, but I'm unclear how to go about it. Any help would be appreciated! (Just to clarify, I'm not having trouble with using Visio, but I don't know how one goes about construct a storyboard or determining the procedure for constructing one)

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• Rails - embedded polymorphic comment list + add comment form - example?

  - by odigity

  Hey, all. Working on my first Rails app. I've searched all around - read a bunch of tutorials, articles, and forum posts, watched some screencasts, and I've found a few examples that come close to what I'm trying to do (notably http://railscasts.com/episodes/154-polymorphic-association and ep 196 about nested model forms), but not exactly. I have two models (Podcast and BlogPost) that need to be commentable, and I have a Comment model that is polymorphically related to both. The railscasts above had a very similar example (ep 154), but Ryan used a full set of nested routes, so there were specific templates for adding and editing comments. What I want to do is show the list of comments right on the Podcast or BlogPost page, along with an Add Comment form at the bottom. I don't need a separate add template/route, and I don't need the ability to edit, only delete. This is a pretty common design on the web, but I can't find a Rails example specifically about this pattern. Here's my current understanding: I need routes for the create and delete actions, of course, but there are no templates associated with those. I'm also guessing that the right approach is to create a partial that can be included at the bottom of both the Podcast and BlogPost show template. The logical name for the partial seems to me to be something like _comments.html.haml. I know it's a common convention to have the object passed to the partial be named after the template, but calling the object 'comments' seems to not match my use case, since what I really need to pass is the commentable object (Podcast or BlogPost). So, I guess I'd use the locals option for the render partial call? (:commentable = @podcast). Inside the partial, I could call commentable.comments to get the comments collection, render that with a second partial (this time with the conventional use case, calling the partial _comment.html.haml), then create a form that submits to... what? REST-wise, it should be a POST to the collection, which would be /podcast|blogpost/:id/comments, and I think the helper for that is podcast_comments_path(podcast) if it were a podcast - not sure what to do though, since I'm using polymorphic comments. That would trigger the Comment.create action, which would then need to redirect back to the podcast|blogpost path /podcast|blogpost/:id. It's all a bit overwhelming, which is why I was really hoping to find a screencast or example that specifically implements this design.

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• SIMPLE OpenSSL RSA Encryption in C/C++ is causing me headaches

  - by Josh

  Hey guys, I'm having some trouble figuring out how to do this. Basically I just want a client and server to be able to send each other encrypted messages. This is going to be incredibly insecure because I'm trying to figure this all out so I might as well start at the ground floor. So far I've got all the keys working but encryption/decryption is giving me hell. I'll start by saying I am using C++ but most of these functions require C strings so whatever I'm doing may be causing problems. Note that on the client side I receive the following error in regards to decryption. error:04065072:rsa routines:RSA_EAY_PRIVATE_DECRYPT:padding check failed I don't really understand how padding works so I don't know how to fix it. Anywho here are the relevant variables on each side followed by the code. Client: RSA *myKey; // Loaded with private key // The below will hold the decrypted message unsigned char* decrypted = (unsigned char*) malloc(RSA_size(myKey)); /* The below holds the encrypted string received over the network. Originally held in a C-string but C strings never work for me and scare me so I put it in a C++ string */ string encrypted; // The reinterpret_cast line was to get rid of an error message. // Maybe the cause of one of my problems? if(RSA_private_decrypt(sizeof(encrypted.c_str()), reinterpret_cast<const unsigned char*>(encrypted.c_str()), decrypted, myKey, RSA_PKCS1_OAEP_PADDING)==-1) { cout << "Private decryption failed" << endl; ERR_error_string(ERR_peek_last_error(), errBuf); printf("Error: %s\n", errBuf); free(decrypted); exit(1); } Server: RSA *pkey; // Holds the client's public key string key; // Holds a session key I want to encrypt and send //The below will hold the encrypted message unsigned char *encrypted = (unsigned char*)malloc(RSA_size(pkey)); // The reinterpret_cast line was to get rid of an error message. // Maybe the cause of one of my problems? if(RSA_public_encrypt(sizeof(key.c_str()), reinterpret_cast<const unsigned char*>(key.c_str()), encrypted, pkey, RSA_PKCS1_OAEP_PADDING)==-1) { cout << "Public encryption failed" << endl; ERR_error_string(ERR_peek_last_error(), errBuf); printf("Error: %s\n", errBuf); free(encrypted); exit(1); } Let me once again state, in case I didn't before, that I know my code sucks but I'm just trying to establish a framework for understanding this. I'm sorry if this offends you veteran coders. Thanks in advance for any help you guys can provide!

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• Can't checkin to Facebook Places by post to api?

  - by MarcusJoe

  Hey everybody, I am trying to build an app where I let my registered user be able to check in to places on Facebook Places. I however for some reason can't seem to make this work. I assumed this is possible with the Api as write functionality has been added to it, but I couldn't find an clear explanation on the web. this is what I currently have, after I have asked the user for permission to publish checkins and for user_checkins. <?php require("src/facebook.php"); $facebook = new Facebook(array( 'appId' => 'xxxxxxxxx', 'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'cookie' => true )); # see if active session $session = $facebook->getSession(); if(!empty($session)) { try{ $uid = $facebook->getUser(); $api_call = array( 'method' => 'users.hasAppPermission', 'uid' => $uid, 'ext_perm' => 'publish_checkins' ); $can_post = $facebook->api($api_call); if($can_post){ $facebook->api('/'.$uid.'/checkins', 'POST', array( 'access_token' => $facebook->getAccessToken(), 'place' => 'place_id', 'message' =>'I went to placename today', 'picture' => 'http://www.place.com/logo.jpg', 'coordinates' => array( 'latitude' => 'lattiude', 'longitude' => 'lattitude', 'tags' => $uid, ) ) ); echo 'You were checked in'; } else { die('Permissions required!'); } } catch (Exception $e){} } else { # There's no active session,generate one $login_url = $facebook->getLoginUrl(); header("Location: ".$login_url); } ?> The code works when I change it 'checkins' to 'feed'. Is there something wrong with my code or am I trying to do somethign that isn't possible (or do it the wrong way). Any help will be greatly appreciated as I already spent quite a significant amount of time trying to fix this, but I just can't seem to make it work. Best regards, Marcus Joe

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• Paypal IPN Handler for Cart

  - by kimmothy16

  Hey everyone! I'm using a Paypal add to cart button for a simple ecommerce website. I had a Paypal IPN handler written in PHP that was successfully working for 'Buy it Now' buttons and purchasing one item at a time. I would run a database query each time to update the store's inventory to reflect the purchase. Now I'm upgrading this store to a 'cart' version so people could check out with multiple items at a time. Would anyone be able to tell me, in general, how my IPN handler would need to be altered to accommodate this? I'm unsure of what a response from Paypal looks like for a cart purchase as opposed to a buy it now purchase. Thanks, any help or examples of working IPN cart scripts would be very appreciated! My current code is below.. // Paypal POSTs HTML FORM variables to this page // we must post all the variables back to paypal exactly unchanged and add an extra parameter cmd with value _notify-validate // initialise a variable with the requried cmd parameter $req = 'cmd=_notify-validate'; // go through each of the POSTed vars and add them to the variable foreach ($_POST as $key => $value) { $value = urlencode(stripslashes($value)); $req .= "&$key=$value"; } // post back to PayPal system to validate $header .= "POST /cgi-bin/webscr HTTP/1.0\r\n"; $header .= "Content-Type: application/x-www-form-urlencoded\r\n"; $header .= "Content-Length: " . strlen($req) . "\r\n\r\n"; // In a live application send it back to www.paypal.com // but during development you will want to uswe the paypal sandbox // comment out one of the following lines $fp = fsockopen ('www.sandbox.paypal.com', 80, $errno, $errstr, 30); //$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30); // or use port 443 for an SSL connection //$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30); if (!$fp) { // HTTP ERROR } else { fputs ($fp, $header . $req); while (!feof($fp)) { $res = fgets ($fp, 1024); if (strcmp ($res, "VERIFIED") == 0) { $item_name = stripslashes($_POST['item_name']); $item_number = $_POST['item_number']; $item_id = $_POST['custom']; $payment_status = $_POST['payment_status']; $payment_amount = $_POST['mc_gross']; //full amount of payment. payment_gross in US $payment_currency = $_POST['mc_currency']; $txn_id = $_POST['txn_id']; //unique transaction id $receiver_email = $_POST['receiver_email']; $payer_email = $_POST['payer_email']; $size = $_POST['option_selection1']; $item_id = $_POST['item_id']; $business = $_POST['business']; if ($payment_status == 'Completed') { // UPDATE THE DATABASE }

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• Using selection sort in java to sort floats

  - by user334046

  Hey, I need to sort an array list of class house by a float field in a certain range. This is my code for the selection sort: public ArrayList<House> sortPrice(ArrayList<House> x,float y, float z){ ArrayList<House> xcopy = new ArrayList<House>(); for(int i = 0; i<x.size(); i++){ if(x.get(i).myPriceIsLessThanOrEqualTo(z) && x.get(i).myPriceIsGreaterThanOrEqualTo(y)){ xcopy.add(x.get(i)); } } ArrayList<House> price= new ArrayList<House>(); while(xcopy.size()>0){ House min = xcopy.get(0); for(int i = 1; i < xcopy.size();i++){ House current = xcopy.get(i); if (current.myPriceIsGreaterThanOrEqualTo(min.getPrice())){ min = current; } } price.add(min); xcopy.remove(min); } return price; } Here is what the house class looks like: public class House { private int numBedRs; private int sqft; private float numBathRs; private float price; private static int idNumOfMostRecentHouse = 0; private int id; public House(int bed,int ft, float bath, float price){ sqft = ft; numBathRs = bath; numBedRs = bed; this.price = price; idNumOfMostRecentHouse++; id = idNumOfMostRecentHouse; } public boolean myPriceIsLessThanOrEqualTo(float y){ if(Math.abs(price - y)<0.000001){ return true; } return false; } public boolean myPriceIsGreaterThanOrEqualTo(float b){ if(Math.abs(b-price)>0.0000001){ return true; } return false; } When i call looking for houses in range 260000.50 to 300000 I only get houses that are at the top of the range even though I have a lower value at 270000. Can someone help?

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• Simplify CASE in VB.net code

  - by StealthRT

  Hey all, i am looking here to see if anyone would have a better way to acomplish this task below in less code. Select Case mainMenu.theNumOpened Case 1 Me.Text = "NBMsg1" Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case 2 Me.Text = "NBMsg2" Dim hwnd As IntPtr = FindWindow(vbNullString, "NBMsg1") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, Me.Height + 10, 0, 0, 1) Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case 3 Me.Text = "NBMsg3" Dim hwnd As IntPtr = FindWindow(vbNullString, "NBMsg2") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, Me.Height + 10, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg1") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 2) + 15, 0, 0, 1) Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case 4 Me.Text = "NBMsg4" Dim hwnd As IntPtr = FindWindow(vbNullString, "NBMsg3") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, Me.Height + 10, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg2") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 2) + 15, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg1") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 3) + 20, 0, 0, 1) Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case 5 Me.Text = "NBMsg5" Dim hwnd As IntPtr = FindWindow(vbNullString, "NBMsg4") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, Me.Height + 10, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg3") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 2) + 15, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg2") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 3) + 20, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg1") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 4) + 25, 0, 0, 1) Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case 6 Me.Text = "NBMsg6" Dim hwnd As IntPtr = FindWindow(vbNullString, "NBMsg5") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, Me.Height + 10, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg4") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 2) + 15, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg3") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 3) + 20, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg2") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 4) + 25, 0, 0, 1) hwnd = FindWindow(vbNullString, "NBMsg1") SetWindowPos(hwnd, 0, My.Computer.Screen.WorkingArea.Width - 302, (Me.Height * 5) + 30, 0, 0, 1) Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 302, 5) Case Else Me.Close() Me.Dispose() End Select What it does is pass to it now many windows are currently already opened. So if one then of course it goes to case 1. If there are 2 opened then it moves the oldest down and puts the newest on top. etc etc. I have set it so that a max of 6 boxes can only be opened at one time. If anyone knows how i could also "slide" them down (kinda like an effect of jQuery) then that would also be, well awesome to know! :o) Any help/suggestions would be great! :o) David

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• ! Extra }, or forgotten \endgroup. latex

  - by gzou

  hey, I met these latex format problem, anyone can offer some help? the .tex file: \begin{table}{} \renewcommand{\arraystretch}{1.1} \caption{Cambridge Flow feature definition and description} \label{cambridge-feature}} \centering \begin{tabular}{|c|c|} \hline\bfseries Abbreviation &\bfseries Description\\ \hline serv-port & Server port\\ \hline clnt-port & Client port\\ \hline push-pkts-serv & count of all packets with\\ & push bit set in TCP header (server to client)\\ \hline init-win-bytes-clnt & the total number of bytes \\ & sent in initial window (client to server)\\ \hline init-win-bytes-serv & the total number of bytes sent\\ & in initial window (server to client)\\ \hline avg-seg-size-clnt & average segment size: \\ & data bytes devided by number of packets\\ \hline IP-bytes-med-clnt & median of total bytes in IP packet\\ \hline act-data-pkt-serv & count of packet with at least one byte \\ & of TCP data playload (server to client)\\ \hline data-bytes-var-clnt & variance of total \\ & bytes in packets (client to server)\\ \hline min-seg-size-serv & minimum segment size \\ & observed (server to client)\\ \hline RTT-samples-serv & total number of RTT samples\\ & found (server to client),\\ & {\bf see also \cite{Moore05discriminators}}\\ \hline push-pkts-clnt & count of all packets with push bit set \\ & in TCP header (server to client)\\ \hline \end{tabular} \end{table} and the error message: ! Extra }, or forgotten \endgroup. \@endfloatbox ...pagefalse \outer@nobreak \egroup \color@endbox l.892 \end{table} I've deleted a group-closing symbol because it seems to be spurious, as in $x}$'. But perhaps the } is legitimate and you forgot something else, as in\hbox{$x}'. In such cases the way to recover is to insert both the forgotten and the deleted material, e.g., by typing `I$}'. there is no $ in my table, also this { are matching with the }, and also after I comment the citation, the error remains. anyone can offer help? really appreciate all the comments! ! Extra }, or forgotten \endgroup.

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• C# - WebBrowser control seems to cache screenshots

  - by Justin

  Hey, I'm using the WebBrowser control in an ASP.NET MVC 2 app (don't judge, I'm doing it in an admin section only to be used by me), here's the code: public static class Screenshot { private static string _url; private static int _width; private static byte[] _bytes; public static byte[] Get(string url) { // This method gets a screenshot of the webpage // rendered at its full size (height and width) return Get(url, 50); } public static byte[] Get(string url, int width) { //set properties. _url = url; _width = width; //start screen scraper. var webBrowseThread = new Thread(new ThreadStart(TakeScreenshot)); webBrowseThread.SetApartmentState(ApartmentState.STA); webBrowseThread.Start(); //check every second if it got the screenshot yet. //i know, the thread sleep is terrible, but it's the secure section, don't judge... int numChecks = 20; for (int k = 0; k < numChecks; k++) { Thread.Sleep(1000); if (_bytes != null) { return _bytes; } } return null; } private static void TakeScreenshot() { try { //load the webpage into a WebBrowser control. using (WebBrowser wb = new WebBrowser()) { wb.ScrollBarsEnabled = false; wb.ScriptErrorsSuppressed = true; wb.Navigate(_url); while (wb.ReadyState != WebBrowserReadyState.Complete) { Application.DoEvents(); } //set the size of the WebBrowser control. //take Screenshot of the web pages full width. wb.Width = wb.Document.Body.ScrollRectangle.Width; //take Screenshot of the web pages full height. wb.Height = wb.Document.Body.ScrollRectangle.Height; //get a Bitmap representation of the webpage as it's rendered in the WebBrowser control. var bitmap = new Bitmap(wb.Width, wb.Height); wb.DrawToBitmap(bitmap, new Rectangle(0, 0, wb.Width, wb.Height)); //resize. var height = _width * (bitmap.Height / bitmap.Width); var thumbnail = bitmap.GetThumbnailImage(_width, height, null, IntPtr.Zero); //convert to byte array. var ms = new MemoryStream(); thumbnail.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); _bytes = ms.ToArray(); } } catch(Exception exc) {//TODO: why did screenshot fail? string message = exc.Message; } } This works fine for the first screenshot that I take, however if I try to take subsequent screenshots of different URL's, it saves screenshots of the first url for the new url, or sometimes it'll save the screenshot from 3 or 4 url's ago. I'm creating a new instance of WebBrowser for each screenshot and am disposing of it properly with the "using" block, any idea why it's behaving this way? Thanks, Justin

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• C# Nested Property Accessing overloading OR Sequential Operator Overloading

  - by Tim

  Hey, I've been searching around for a solution to a tricky problem we're having with our code base. To start, our code resembles the following: class User { int id; int accountId; Account account { get { return Account.Get(accountId); } } } class Account { int accountId; OnlinePresence Presence { get { return OnlinePresence.Get(accountId); } } public static Account Get(int accountId) { // hits a database and gets back our object. } } class OnlinePresence { int accountId; bool isOnline; public static OnlinePresence Get(int accountId) { // hits a database and gets back our object. } } What we're often doing in our code is trying to access the account Presence of a user by doing var presence = user.Account.Presence; The problem with this is that this is actually making two requests to the database. One to get the Account object, and then one to get the Presence object. We could easily knock this down to one request if we did the following : var presence = UserPresence.Get(user.id); This works, but sort of requires developers to have an understanding of the UserPresence class/methods that would be nice to eliminate. I've thought of a couple of cool ways to be able to handle this problem, and was wondering if anyone knows if these are possible, if there are other ways of handling this, or if we just need to think more as we're coding and do the UserPresence.Get instead of using properties. Overload nested accessors. It would be cool if inside the User class I could write some sort of "extension" that would say "any time a User object's Account property's Presence object is being accessed, do this instead". Overload the . operator with knowledge of what comes after. If I could somehow overload the . operator only in situations where the object on the right is also being "dotted" it would be great. Both of these seem like things that could be handled at compile time, but perhaps I'm missing something (would reflection make this difficult?). Am I looking at things completely incorrectly? Is there a way of enforcing this that removes the burden from the user of the business logic? Thanks! Tim

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• Reproduce PIPE functionality in IronPython

  - by Muppet Geoff

  Hi, I am hoping some genious out there can help me out with this... I am using sox to merge and resample a group of WAV files, and pipe the output directly to the input of NeroAACEnc for encoding to AAC format. I originally ran the process in a script, which included: sox.exe d:\audio\1.wav d:\audio\2.wav d:\audio\3.wav -c 1 -r 22050 -t wav - | neroAacEnc.exe -q 0.5 -if - -of test.m4a This worked as expected. The '-' in the comand line translates as 'Pipe/redirect input/output (stdin/stdout)' - So Sox pipes to stdout, and NeroAACEnc reads from stdin, the | joins them together. I then migrated the whole solution to Python, and the equivalent command became: from subprocess import call, Popen, PIPE runwav = Popen(['sox.exe', 'd:\audio\1.wav', 'd:\audio\2.wav', 'd:\audio\3.wav', '-c', '1', '-r', '22050', '-t', 'wav', '-'], shell=False, stdout=PIPE) runm4b = call(['neroAacEnc.exe', '-q', '0.5', '-if', '-', '-of', 'test.m4a'], shell=False, stdin=runwav.stdout) This also worked like a charm, exactly as expected. Slightly more convoluted, but hey :) Well now I have to move it to IronPython, and the Subprocess module isn't available (the partial implementation that is, doesn't have Popen/PIPE support - plus it seems silly to add a custom library when there is probably a native alternative). I should mention here, that I opted for IronPython over C#, because I am comfortable with Python now - however, there is a chance of moving it again later to C# native, and I am using IronPython to ease myself into it :) I have no C# or .net experience. So far I have the following equivalent, that sets up the 2 processes: from System.Diagnostics import Process wav = Process() wav.StartInfo.UseShellExecute = False wav.StartInfo.RedirectStandardOutput = True wav.StartInfo.FileName = 'sox.exe' wav.StartInfo.Arguments = 'd:\audio\1.wav d:\audio\2.wav d:\audio\3.wav -c 1 -r 22050 -t wav -' wav.Start() m4b = Process() m4b.StartInfo.UseShellExecute = False m4b.StartInfo.RedirectStandardInput = True m4b.StartInfo.FileName = 'neroAacEnc.exe' m4b.StartInfo.Arguments = '-q 0.5 -if - -of test.m4a' m4b.Start() I know that these 2 processes start (I can see Nero and Sox in the task manager) but what I can't figure out (for the life of me) is how to string the two output/input streams together, as with the previous two solutions. I have searched and searched, so I thought I'd ask! If anyone knows either: How to join the two streams with the same net result as the Python and Commandline versions; or A better way to acheive what I am trying to do. I would be extremely grateful! Many thanks in advance, Geoff P.S. A code sample based off the above would be awesome :) or a specific code example of a similar process that I can easily translate... this has broked my brayne.

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• List of objects sent over WCF, but null list received?

  - by GONeale

  Hey there, I have an object containing a list of custom objects which I am returning over a response in WCF, however on the receiving end, the list is null? But it contains 112 objects just prior to stepping out of the service on the server. This wasn't always the case, I have seen it return a list. I've just recently upgraded it to use NET TCP bindings, but I can't confirm when I started losing the data or if it was since the conversion from wsHttpBinding to netTcpBinding as it moved along with about four other services. I have looked on the WCF Service messages and trace file and also the WCF client's messages and trace file, no exceptions reported, and both message logs indicate they are sending the List<T> and for client, receiving the list - very frustrating! It's not a super light array, but not huge either, around 100KB. it has about 12 properties each and as stated 112 items are being sent. I have tried everything I can think of on client and server, note: Client: this.binding = new NetTcpBinding(SecurityMode.None) { MaxReceivedMessageSize = int.MaxValue, ReaderQuotas = { MaxStringContentLength = int.MaxValue, MaxArrayLength = int.MaxValue } }; ... Server app.config (sorry I have no idea if the quota settings have any bearing on net tcp? I only just added it similar to what I use for wsHttpBinding to test, but still list is null): <netTcpBinding> <binding name="SecurityByNetTcpTransportBinding" sendTimeout="00:03:00" maxReceivedMessageSize="2147483647"> <readerQuotas maxStringContentLength="2147483647" maxArrayLength="2147483647" /> <security mode="None" /> </binding> </netTcpBinding> and something else I tried in my net tcp binding behavior: <dataContractSerializer maxItemsInObjectGraph="2147483647" /> <serviceTimeouts transactionTimeout="05:05:00" /> <serviceThrottling maxConcurrentSessions="400" maxConcurrentInstances="400" maxConcurrentCalls="400"/> I hope somebody can help, I hate 5 steps forward 3 steps backward which always seems to be the case with WCF :P In the interim until I [hopefully] get a response I will now try reducing this array just to see if it's a sizing issue.. Ok, It seems I have bigger problems. Because the list was the only thing I was sending, I thought it was an array issue. I am even setting an int to "25" and it's coming back as 0 - Anybody? I know I must have done something obviously stupid.

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• NSFetchedResultsController - Delegate methods crashing under iPhone OS 3.0, but NOT UNDER 3.1

  - by Scott Langendyk

  Hey guys, so I've got my NSFetchedResultsController working fine under the 3.1 SDK, however I start getting some weird errors, specifically in the delegate methods when I try it under 3.0. I've determined that this is related to the NSFetchedResultsControllerDelegate methods. This is what I have set up. The inEditingMode stuff has to do with the way I've implemented adding another static section to the table. - (void)controllerWillChangeContent:(NSFetchedResultsController*)controller { [self.tableView beginUpdates]; } - (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type{ NSIndexSet *sectionSet = [NSIndexSet indexSetWithIndex:sectionIndex]; if(self.inEditingMode){ sectionSet = [NSIndexSet indexSetWithIndex:sectionIndex + 1]; } switch (type) { case NSFetchedResultsChangeInsert: [self.tableView insertSections:sectionSet withRowAnimation:UITableViewRowAnimationFade]; break; case NSFetchedResultsChangeDelete: [self.tableView deleteSections:sectionSet withRowAnimation:UITableViewRowAnimationFade]; break; default: [self.tableView reloadData]; break; } } - (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath{ NSIndexPath *relativeIndexPath = indexPath; NSIndexPath *relativeNewIndexPath = newIndexPath; if(self.inEditingMode){ relativeIndexPath = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section + 1]; relativeNewIndexPath = [NSIndexPath indexPathForRow:newIndexPath.row inSection:newIndexPath.section + 1]; } switch(type) { case NSFetchedResultsChangeInsert: [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:relativeNewIndexPath] withRowAnimation:UITableViewRowAnimationFade]; break; case NSFetchedResultsChangeDelete: [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:relativeIndexPath] withRowAnimation:UITableViewRowAnimationFade]; break; default: [self.tableView reloadData]; break; } } -(void)controllerDidChangeContent:(NSFetchedResultsController *)controller{ [self.tableView endUpdates]; } When I add an entity to the managed object context, I get the following error: Serious application error. Exception was caught during Core Data change processing: *** -[NSCFArray objectAtIndex:]: index (1) beyond bounds (1) with userInfo (null) I put a breakpoint on objc_exception_throw, and the crash seems to be occuring inside of controllerDidChangeContent. If I comment out all of the self.tableView methods, and put a single [self.tableView reloadData] inside of controllerDidChangeContent, everything works as expected. Anybody have any idea as to why this is happening?

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• Updating / refreshing a live geojson layer | JSON & JS Variable

  - by Ozaki

  TLDR I am trying to get my geoJSON layer to update, currently it will 1. Create the vector mark, 2. Remove the vector mark, 3. Set the JS variable for lat and lon, 4. Unset the variable??? :S Hey S O. I have a geojson layer set up as follows: //GeoJSON Layer// var layer1 = new OpenLayers.Layer.GML("My GeoJSON Layer", "coordinates", {format: OpenLayers.Format.GeoJSON, styleMap: style_red}); My features are set up as follows: var latitude = 0.0; // as 0.0 it will draw the point in. var longitude = 0.0; // as 0.0 it will draw the point in. //var longitude = getlongitude; where getlongitude = JSON string of longitude. var point = new OpenLayers.Geometry.Point(longitude, latitude); pointFeature = new OpenLayers.Feature.Vector(point, null, style_red); var style_red = OpenLayers.Util.extend({}, layer_style); style_red.strokeColor = "red"; style_red.fillColor = "black"; style_red.fillOpacity = 0.5; style_red.graphicName = "circle"; style_red.pointRadius = 3.8; style_red.strokeWidth = 2; style_red.strokeLinecap = "butt"; and my layer updating function: function UpdateLayer(){ var p = new OpenLayers.Format.GeoJSON({ 'internalProjection': new OpenLayers.Projection("EPSG:900913"), 'externalProjection': new OpenLayers.Projection("EPSG:4326") }); var url = "coordinates"; OpenLayers.loadURL(url, {}, null, function(r) { var f = p.read(r.responseText); map.layers[2].destroyFeatures(); map.layers[2].addFeatures(pointFeature); }); setTimeout("UpdateLayer()",1000) } Any idea what I am doing wrong or what I am missing? Edit1 It now removes the feature (was map.layers[1]) previously... But will not add the new feature.. Edit2 I managed to get it to redraw a point but not with live data. It should draw the point at what (latitude) & (longitude) are equal to. I am trying to set latitude & longitude to some JSON string but every time straight after it sets the variable it changes it back to "undefined" as soon as it passes the line after var latitude? (using firebug & firequery to debug)

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• RIA Services Repository Save does not work!?

  - by Savvas Sopiadis

  Hello everybody! Doing my first SL4 MVVM RIA based application and i ran into the following situation: updating a record (EF4,NO-POCOS!!) in the SL-client seems to take place, but values in the dbms are unchanged. Debugging with Fiddler the message on save is (amongst others): EntityActions.nil? b9http://schemas.microsoft.com/2003/10/Serialization/Arrays^HasMemberChanges?^Id?^ Operation?Update I assume that this says only: hey! the dbms should do an update on this record, AND nothing more! Is that right?! I 'm using a generic repository like this: public class Repository<T> : IRepository<T> where T : class { IObjectSet<T> _objectSet; IObjectContext _objectContext; public Repository(IObjectContext objectContext) { this._objectContext = objectContext; _objectSet = objectContext.CreateObjectSet<T>(); } public IQueryable<T> AsQueryable() { return _objectSet; } public IEnumerable<T> GetAll() { return _objectSet.ToList(); } public IEnumerable<T> Find(Expression<Func<T, bool>> where) { return _objectSet.Where(where); } public T Single(Expression<Func<T, bool>> where) { return _objectSet.Single(where); } public T First(Expression<Func<T, bool>> where) { return _objectSet.First(where); } public void Delete(T entity) { _objectSet.DeleteObject(entity); } public void Add(T entity) { _objectSet.AddObject(entity); } public void Attach(T entity) { _objectSet.Attach(entity); } public void Save() { _objectContext.SaveChanges(); } } The DomainService Update Method is the following: [Update] public void UpdateCulture(Culture currentCulture) { if (currentCulture.EntityState == System.Data.EntityState.Detached) { this.cultureRepository.Attach(currentCulture); } this.cultureRepository.Save(); } I know that the currentCulture-Entity is detached. What confuses me (amongst other things) is this: is the _objectContext still alive? (which means it "will be"??? aware of the changes made to record, so simply calling Attach() and then Save() should be enough!?!?) What am i missing? Development Environment: VS2010RC - Entity Framework 4 (no POCOs) Thanks in advance

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• CSS Footer bar bottom center issue

  - by StealthRT

  Hey all, i am trying to get my bottom bar to center on the screen but i am unable to do so. <style type="text/css"> body { background: #fffff; margin: 0; padding: 0; font: 10px normal Verdana, Arial, Helvetica, sans-serif; } * {margin: 0; padding: 0; outline: none;} #bottomBar { position: fixed; bottom: 0px; left: 0px; z-index: 9999; background: #e3e2e2; border: 1px solid #c3c3c3; border-bottom: none; width: 500px; min-width: 500px; margin: 0px auto; -moz-opacity:.90; filter:alpha(opacity=90); opacity:.90; } *html #bottomBar {margin-top: -1px; position: absolute; top:expression(eval(document.compatMode &&document.compatMode=='CSS1Compat') ?documentElement.scrollTop+(documentElement.clientHeight-this.clientHeight) : document.body.scrollTop +(document.body.clientHeight-this.clientHeight));} #bottomBar ul {padding: 0; margin: 0;float: left;width: 100%;list-style: none;border-top: 1px solid #fff;} #bottomBar ul li{padding: 0; margin: 0;float: left;position: relative;} #bottomBar ul li a{padding: 5px;float: left;text-indent: -9999px;height: 16px; width: 16px;text-decoration: none;color: #333;position: relative;} html #bottomBar ul li a:hover{ background-color: #fff; } a.PDF{background: url(http://www.xxx.com/img/pdficon.png) no-repeat center center; } </style> <div id="bottomBar"> <ul id="mainpanel"> <li style="padding-top:5px; font-family:Arial, Helvetica, sans-serif; padding-left: 5px;">First time here? Be sure to check out the "this" button above or download the PDF here -></li> <li><a href="http://www.xxx.com" class="PDF">Download PDF <small>Download PDF</small></a></li> </ul> </div> Thanks! David

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• Android App to call a number on button click

  - by FosterZ

  hey guys this is my 1st android app(learning), so i want to call a number given in the textbox but i'm getting error as "The application 'xyz'(process com.adroid) has stoped unexpectedly".. following the code i have done so far... where m doing wrong ?? EditText txtPhn; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button callButton = (Button)findViewById(R.id.btnCall); txtPhn = (EditText)findViewById(R.id.txtPhnNumber); callButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { try { Intent callIntent = new Intent(Intent.ACTION_CALL); callIntent.setData(Uri.parse("tel:"+txtPhn.getText().toString())); startActivity(callIntent); } catch (ActivityNotFoundException activityException) { Log.e("Calling a Phone Number", "Call failed", activityException); } } }); } EDITED LogCat 03-09 11:23:25.874: ERROR/AndroidRuntime(370): FATAL EXCEPTION: main 03-09 11:23:25.874: ERROR/AndroidRuntime(370): java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.CALL dat=tel:xxx-xxx-xxxx flg=0x10000000 cmp=com.android.phone/.OutgoingCallBroadcaster } from ProcessRecord{40738d70 370:org.krish.android/10034} (pid=370, uid=10034) requires android.permission.CALL_PHONE 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Parcel.readException(Parcel.java:1322) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Parcel.readException(Parcel.java:1276) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1351) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1374) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Activity.startActivityForResult(Activity.java:2827) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.Activity.startActivity(Activity.java:2933) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at org.krish.android.caller$1.onClick(caller.java:29) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.view.View.performClick(View.java:2485) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.view.View$PerformClick.run(View.java:9080) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Handler.handleCallback(Handler.java:587) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Handler.dispatchMessage(Handler.java:92) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.os.Looper.loop(Looper.java:123) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at android.app.ActivityThread.main(ActivityThread.java:3683) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at java.lang.reflect.Method.invokeNative(Native Method) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at java.lang.reflect.Method.invoke(Method.java:507) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 03-09 11:23:25.874: ERROR/AndroidRuntime(370): at dalvik.system.NativeStart.main(Native Method)

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• Jquery hasClass conditional not working

  - by Wade D Ouellet

  Hey, I have my site going here: http://www.treethink.com I am trying to make it so when a navigation item is clicked, it retracts the news ticker on the right and then doesn't run any of the extracting/timer functions anymore. I got it to retract but it still extracts. How I am doing it is I am adding a "noTicker" class with the nav buttons and removing it with colorbox's close button. The function runs on the page initially and if there isn't a "noTicker" class it runs the news ticker as planned. When a nav or close button is clicked it runs the function again which checks again to see if it has that class. So if it has the class it should retract (which it is so that must mean it's adding the class properly) and then not run any of the timer functions, but it still runs the timer functions for some reason. Here is my jQuery. /* Initially hide all news items */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); var randomNum = Math.floor(Math.random()*3); /* Pick random number */ newsTicker(); function newsTicker() { if (!$("#ticker").hasClass("noTicker")) { $("#ticker").oneTime(2000,function(i) { /* Do the first pull out once */ $('div#ticker div:eq(' + randomNum + ')').show(); /* Select div with random number */ $("#ticker").animate({right: "0"}, {duration: 800 }); /* Pull out ticker with random div */ }); $("#ticker").oneTime(15000,function(i) { /* Do the first retract once */ $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); }); $("#ticker").everyTime(16500,function(i) { /* Everytime timer gets to certain point */ /* Show next div */ randomNum = (randomNum+1)%3; $('div#ticker div:eq(' + (randomNum) + ')').show(); $("#ticker").animate({right: "0"}, {duration: 800}); /* Pull out right away */ $("#ticker").oneTime(15000,function(i) { /* Afterwards */ $("#ticker").animate({right: "-450"}, {duration: 800});/* Retract ticker */ }); $("#ticker").oneTime(16000,function(i) { /* Afterwards */ /* Hide all divs */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); }); }); } else { $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); } } /* when nav item is clicked re-run news ticker function but give it new class to prevent activity */ $("#nav li").click(function() { $("#ticker").addClass("noTicker"); newsTicker(); }); /* when close button is clicked re-run news ticker function but take away new class so activity can start again */ $("#cboxClose").click(function() { $("#ticker").removeClass("noTicker"); newsTicker(); }); Thanks, Wade

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• Python, SWIG and other strange things

  - by wanderameise

  hey, I have a firmware for an USB module I can already control by visual C. Now I want to port this to python. for this I need the octopus library which is written in c. I found a file called octopus_wrap which was created by SWIG! then I found a makefile which says: python2.5: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.5 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so python2.4: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.4 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so win: gcc -fPIC -c ../../liboctopus/src/octopus.c -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -c octopus_wrap.c -I /c/Python25/libs -lpython25 -I/c/Python25/include -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -shared *.o -o _octopus.pyd -L/c/Python25/libs -lpython25 -lusb -L/c/Programme/libusb-win32-device-bin-0.1.10.1/lib/gcc clean: rm -f octopus* _octopus* install_python2.4: cp _octopus.so /usr/local/lib/python2.4/site-packages/ cp octopus.py /usr/local/lib/python2.4/site-packages/ install_python2.5: cp _octopus.so /usr/local/lib/python2.5/site-packages/ cp octopus.py /usr/local/lib/python2.5/site-packages/ I dont know how to handle this but as far as I can see octopus.py and _octopus.so are the resulting output files which are relevant to python right? luckily someone already did that and so I put those 2 files to my "python26/lib" folder (hope it doesnt matter if it´s python 2.5 or 2.6?!) So when working with the USB device the octopus.py is the library to work with! Importing this file makes several problems: >>> Traceback (most recent call last): File "C:\Users\ameise\My Dropbox\µC\AVR\OCTOPUS\octopususb-0.5\demos\python \blink_status.py", line 8, in <module> from octopus import * File "C:\Python26\lib\octopus.py", line 7, in <module> import _octopus ImportError: DLL load failed: module not found. and here´s the related line 7 : import _octopus So there´s a problem considering the .so file! What could be my next step? I know that´s a lot of confusing stuff but I hope anyone of you could bring some light in my mind! thy in advance

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• Rails + AMcharts (with export image php script) - PHP script converted to controller?

  - by Elliot

  Hey Guys, This one might be a little confusing. I'm using AMCharts with rails. Amcharts comes with a PHP script to export images called "export.php" I'm trying to figure out how to take the code in export.php and put it into a controller. Here is the code: <?php // amcharts.com export to image utility // set image type (gif/png/jpeg) $imgtype = 'jpeg'; // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?>

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• XML deserializer (Iserialzable)

  - by user311130

  Hey everybody, I have a class in c# that implements Iserialzable. I'm using a XMLSerializer that produces a XML from instance of that class. I get the following XML: <?xml version="1.0"?> <Configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <SessionConfiguration> <RemoteMachineName>HV-BENDA</RemoteMachineName> </SessionConfiguration> <SessionsCredentialsList> <CredentialsItem> <User>test0</User> <Password>Pa$$word1</Password> </CredentialsItem> <CredentialsItem> <User>test1</User> <Password>Pa$$word1</Password> </CredentialsItem> <CredentialsItem> <User>test2</User> <Password>Pa$$word1</Password> </CredentialsItem> <CredentialsItem> <User>test3</User> <Password>Pa$$word1</Password> </CredentialsItem> <CredentialsItem> <User>test4</User> <Password>Pa$$word1</Password> </CredentialsItem> </SessionsCredentialsList> <TIME_OUT /> <LOCAL_USERS_NUM>5</LOCAL_USERS_NUM> </Configuration> At some later point in the code I use a XMLSerializer again to deserial that XML document. and I get the following error: {"There is an error in XML document (1, 1)."} Inner exception: {"Data at the root level is invalid. Line 1, position 1."} Do someone knows wat could be the problem? All the best

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• Iphone App crashing on launch

  - by Declan Scott

  Hey, My simple iphone app is crashing on launch, it says "the application downloadText quit unexcpectedly i none of these windows that pop up when a mac app crashes and has a send to Apple button. My .h is below and i would greatly appreciate it if anyone could give me a hand as to what's wrong? thanks, Declan `#import "downloadTextViewController.h" @implementation downloadTextViewController // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { NSString *myPath = [self saveFilePath]; NSLog(myPath); BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:myPath]; if (fileExists) { NSArray *values = [[NSArray alloc] initWithContentsOfFile:myPath]; textView.text = [values objectAtIndex:0]; [values release]; } // notification UIApplication *myApp = [UIApplication sharedApplication]; // add yourself to the dispatch table [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillTerminate:) name:UIApplicationWillTerminateNotification object:myApp]; [super viewDidLoad]; } (IBAction)fetchData { /// Show activityIndicator / progressView NSURLRequest *downloadRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://simpsonatyapps.com/exampletext.txt"] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:1.0]; NSURLConnection *downloadConnection = [[NSURLConnection alloc] initWithRequest:downloadRequest delegate:self]; if (downloadConnection) downloadedData = [[NSMutableData data] retain]; else { /// Error message } } (void)connection:(NSURLConnection *)downloadConnection didReceiveData:(NSData *)data { [downloadedData appendData:data]; NSString *file = [[NSString alloc] initWithData:downloadedData encoding:NSUTF8StringEncoding]; textView.text = file; /// Remove activityIndicator / progressView [[UIApplication sharedApplication] setApplicationIconBadgeNumber:1]; } (NSString *) saveFilePath { NSArray *pathArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); return [[pathArray objectAtIndex:0] stringByAppendingPathComponent:@"savedddata.plist"]; } (void)applicationWillTerminate:(UIApplication *)application { NSArray *values = [[NSArray alloc] initWithObjects:textView.text,nil]; [values writeToFile:[self saveFilePath] atomically:YES]; [values release]; } (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } (void)dealloc { [super dealloc]; } (NSCachedURLResponse *)connection:(NSURLConnection *)connection willCacheResponse:(NSCachedURLResponse *)cachedResponse { return nil; } @end `

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• CSS: Chrome and Safari seem to 'add' border to width, while IE, Firefox & Opera don't

  - by Michiel

  Hey guys, I'm trying to achieve cross-browser consistency for my website, but I have been trying all day now and its driving me nuts (0.38 am here in Europe now..). It's about this page: http://www[insert-dot-here]geld[insert-dash-here]surfen[insert-dot-here]nl/uitbetalingen.html (please note that I prefer this URL not to be made crawlable for seo-bots) If you view this page in IE, Firefox or Opera, everything is fine, but in Chrome and Safari the tables are a little out of line (as you'll probably clearly notice). What seems to be the problem?; it appears to me that in Chrome and Safari the left and right border (2px) in total are added to the set table width, while in the other browsers the border is considered part of the width. The (most) relevant CSS-lines are the following ones (from the tabel.css-file, also available through the page's source file): table.uitbetaling { margin: 11px 18px 10px 19px; border: 1px solid #8ccaee; width: 498px; padding: 0; } table.uitbetaling img, table.uitbetaling td { margin: 0; border: 0; padding: 0; width: 496px; } table.uitbetaling tr { margin: 0; border: 0; padding: 0 1px 0 0; } So basically I have used a table-structure to organize images, like this; (the class of the table is 'uitbetaling') <table> <tr><td><img /></td></tr> <tr><td><img /></td></tr> ... <tr><td><img /></td></tr> </table> If, here, I set the width of 'table.uitbetaling' and 'table.uitbetaling img, table.uitbetaling td' to the same value (e.g. both 496 or 498), the 'problem' in Chrome and Safari is solved, however in Firefox the right side border is than blank. Because the right-side border can't 'fit' in anymore. 'img' and 'td' must be at least 2px more narrow than 'table.uitbetaling' for the right-border be visible in Firefox. Is there any way to solve this? Thanks so much in advance for your insights!!

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