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Dynamic MMap ran out of room when trying to sudo apt-get anything

- by user1610406

I was having an error in Update Manager that asks me to do a partial upgrade and it fails. Now I can't sudo apt-get install anything. I tried to fix it, and now I can't sudo apt-get anything. Every time, I get this output: Reading package lists... Error! E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 25165824. (man 5 apt.conf) E: Error occurred while processing libuptimed0 (NewVersion1) E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_lucid_universe_binary-i386_Packages W: Unable to munmap E: The package lists or status file could not be parsed or opened. I have no idea why this is happening or how to fix it, and I fear that if I try something that probably doesn't work that it will make my problem worse. (Just for reference I am currently running 10.04 (Lucid) on my machine.)

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Server-side Input

- by Thomas

Currently in my game, the client is nothing but a renderer. When input state is changed, the client sends a packet to the server and moves the player as if it were processing the input, but the server has the final say on the position. This generally works really well, except for one big problem: falling off edges. Basically, if a player is walking towards an edge, say a cliff, and stops right before going off the edge, sometimes a second later, he'll be teleported off of the edge. This is because the "I stopped pressing W" packet is sent after the server processes the information. Here's a lag diagram to help you understand what I mean: http://i.imgur.com/Prr8K.png I could just send a "W Pressed" packet each frame for the server to process, but that would seem to be a bandwidth-costly solution. Any help is appreciated!

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Why must "stride" in the System.Drawing.Bitmap constructor be a multiple of 4?

- by Gorchestopher H

I am writing an application that requires me to take a proprietary bitmap format (an MVTec Halcon HImage) and convert it into a System.Drawing.Bitmap in C#. The only proprietary functions given to me to help me do this involve me writing to file, except for the use of a "get pointer" function. This function is great, it gives me a pointer to the pixel data, the width, the height, and the type of the image. My issue is that when I create my System.Drawing.Bitmap using the constructor: new System.Drawing.Bitmap(width, height, stride, format, scan) I need to specify a "stride" that is a multiple of 4. This may be a problem as I am unsure what size bitmap my function will be hit with. Supposing I end up with a bitmap that is 111x111 pixels, I have no way to run this function other than adding a bogus column to my image or subtracting 3 columns. Is there a way I can sneak around this limitation?

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Telerik RadAjaxManager and Mouse Events in Chrome

- by kuzco

Whenever I'm using Telerik's RadAjaxManager in Chrome, the events sent to any mouse events I'm using are passed as null. For instance, the following: <img id="Image1" src="image.gif" onclick="alert(event)" /> <rad:RadAjaxManager ID="RadAjaxManager1" runat="server"> <AjaxSettings> </AjaxSettings> </rad:RadAjaxManager> Alerts null when clicking the image. This does not happen in IE or FF. The version of the RadAjaxManager is 1.8.5.0. I'm guessing the problem does not occur in later versions, but an upgrade is not an option at the moment. I tried Telerik's support forum, but they didn't really provide any answer. What could cause such a problem? And how can it be dealt with?

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jQuery show/hide does not work on IE

- by user1720534

I have made simple jQuery script that should show div element when hovering mouse over another div (image). Here is my code: jQuery(document).ready(function(){ jQuery("#slider").hover(function(){ jQuery("#slider .hovercontent").fadeTo('fast', 1); },function(){ jQuery('#slider .hovercontent').fadeTo('slow', 0); }); }); Here is url for page: http://asiakas.henripylvas.com/henripylvas/ This works flawless on FF, Chrome, Safari and Opera but when using IE8 or 9 image in #slider div disappear. What is wrong? Tried to search answer for this but no luck. Thanks.

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Display Message if Flash Doesn't Show in IE8

- by aarontb

Okay...so apparently with the new update in IE8, it starts up with NO add-ons. Since I cannot program a code to turn on add-ons in a browser, I need to show a message when this occurs. Much like an image has alternative text in the event the image doesn't load...how can I add a message that states: You are using Internet Explorer 8+ and need to turn on your add-ins like FLASH Player. This site is optimized for Mozilla Firefox or Google Chrome. ANy suggestions?

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How do you handle measuring Code Coverage in JavaScript

- by Dancrumb

In order to measure Code Coverage for JavaScript unit tests, one needs to instrument the code, run the tests and then perform post-processing. My concern is that, as a result, you are unit testing code that will never be run in production. Since JavaScript isn't compiled, what you test should be precisely what you execute. So here's my question, how do you handle this? One thought I had was to run Unit Testing on the production code and use that for my pass fail. I would then create a shadow of my production code, with instrumentation and run my unit tests again; this would give me my code coverage stats. Has anyone come across a method that is a little more graceful than this?

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Amazon S3 collisions with heroku and paperclip

- by poseid

I have an app on my localhost for development and an app for testing on heroku. Image upload with localhost and paperclip always works. However, doing the same experiment with image upload on my heroku app, the app hangs... and the upload seems to be going on forever. I suspect that there is a collision going on. What is needed to get but uploads working? Or do I need to use different buckets for each environment?

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how to get the camera data

- by beof

Hello ,guys, My app needs to get the camera data from Iphone. In my ImagePickerController, there is overlayView drawing realtime indications. I use UIGetScreenImage() to get the screenshot, and I also dump overlayview to image, then I can restore the original Image based on these two images. if the overlayView is still, it works quite well, but if the overlayView keeps changing, UIGetScreenImage() can not keep up with it. For example,if the overlayView changes from a rectangle to a circle, then calling UIGetScreenImage() returns with a rectangle on top of it. Is there a way to get the realtime camera data? I really appreciate if someone could help.

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IE6 CSS tooltip not appearing

- by Lauren

I'm using a tooltip that works in FF, Chrome, and IE7-8, but in IE6 it doesn't appear. You can go to this page http://www.avaline.com/ Bags/ Eco-Friendly-Bags/R1500 and login with [email protected] password:test02, then hit the "add to cart" button and hover over the question marks to see (or not see) the tooltips. This is the relevant HTML and CSS: <DIV class=oewBox id=oewImpLocDiv style="BACKGROUND-IMAGE: url(/images/img/org4.gif)"> <A class=tooltip href="#"><SPAN class=""><STRONG>More than 2 imprint locations?</STRONG> Test </SPAN></A> </DIV> <style> /* Rule from element "style" attribute */ element.style { BACKGROUND-IMAGE: url(/images/img/org4.gif) } /* Rule N°8 from inline stylesheet */ .oewBox { PADDING-RIGHT: 8px; PADDING-LEFT: 40px; PADDING-BOTTOM: 16px; MARGIN: 0px 0px 6px; PADDING-TOP: 6px; BORDER-BOTTOM: #ff7c14 3px solid } /* Rule N°7 from inline stylesheet */ .oewBox { BACKGROUND-POSITION: 0px 0px; BACKGROUND-IMAGE: none; BACKGROUND-REPEAT: no-repeat } /* Rule N°11 from /site/av-files/mainstyles.css */ A:active { COLOR: #3b88c4; TEXT-DECORATION: none } /* Rule N°10 from /site/av-files/mainstyles.css */ A:hover { COLOR: #000; TEXT-DECORATION: none } /* Rule N°9 from /site/av-files/mainstyles.css */ A:visited { COLOR: #3b88c4; TEXT-DECORATION: underline } /* Rule N°8 from /site/av-files/mainstyles.css */ A:link { COLOR: #3b88c4; TEXT-DECORATION: underline } /* Rule N°7 from /site/av-files/mainstyles.css */ A { COLOR: #3b88c4; TEXT-DECORATION: underline } /* Rule N°52 from inline stylesheet */ A.tooltip { BACKGROUND: url(/images/img/question.gif) no-repeat; FLOAT: right; WIDTH: 19px; HEIGHT: 20px } /* Rule N°54 from inline stylesheet */ A.tooltip:hover SPAN { BORDER-RIGHT: #ff7c14 1px solid; BORDER-TOP: #ff7c14 1px solid; DISPLAY: inline; BACKGROUND: #ffffff; BORDER-LEFT: #ff7c14 1px solid; COLOR: #000; BORDER-BOTTOM: #ff7c14 1px solid; POSITION: absolute } /* Rule N°53 from inline stylesheet */ A.tooltip SPAN { PADDING-RIGHT: 3px; DISPLAY: none; PADDING-LEFT: 3px; FONT-WEIGHT: normal; FONT-SIZE: 11px; PADDING-BOTTOM: 2px; MARGIN-LEFT: -245px; WIDTH: 230px; PADDING-TOP: 2px } </style>

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DataSets and XML - The Simplistic Approach

One of the first ways I learned how to read xml data from external data sources was by using a DataSet’s ReadXML function. This function takes file path for an XML document and then converts it to a Dataset. This functionality is great when you need a simple way to process an XML document. In addition the DataSet object also offers a simple way to save data in an xml format by using the WriteXML function. This function saves the current data in the DataSet to an XML file to be used later. DataSet ds = New DataSet();String filePath = “http://www.yourdomain.com/someData.xml”;String fileSavePath = “C:\Temp\Test.xml”//Read file for this locationds.readxml(filePath);//Save file to this locationds.writexml(fileSavePath); I have used the ReadXML function before when consuming data from external Rss feeds to display on one of my sites. It allows me to quickly pull in data from external sites with little to no processing. Example site: MyCreditTech.com

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Did You Know? I'm doing 3 more online seminars with SSWUG!

- by Kalen Delaney

As I told you in April , I recorded two more seminars with Stephen Wynkoop, on aspects of Query Processing. The first one will be broadcast on June 30 and the second on August 27. In between, we'll broadcast my Index Internals seminar, on July 23. Workshops can be replayed for up to a week after the broadcast, and you can even buy a DVD of the workshop. You can get more details by clicking on the workshop name, below, or check out the announcement on the SSWUG site at http://www.sswug.org/editorials/default.aspx?id=1948...(read more)

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New London based .NET User Group – first meeting June 2nd on MEF

- by Eric Nelson

A new .NET User Group is starting up in Canary Wharf - CWDNUG. It plans to focus on technology for financial services such as: WPF & Silverlight. F# & other alternative languages. High volume systems & complex event processing. Agile tools, methodologies and experiences. Open source systems that you can use (or that need your help!). Upcoming releases from Microsoft (WP7, VS2010, TPL). The first meeting is on June 2nd and Marlon (WPF MVP) will be speaking about MEF. Register today as there are only 15 spots left :-) (as of Thursday 20th May)

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dojo connect mouseover and mouseout

- by peirix

When setting up dojo connections to onmouseover and onmouseout, and then adding content on mouseover, dojo fires the onmouseout event at once, since there is new content. Example: dojo.query(".star").parent().connect("onmouseover", function() { dojo.query("span", this).addContent("<img src='star-hover.jpg'>"); }).connect("onmouseout", function() { dojo.destroy(dojo.query("img", this)[0]); }); The parent() is a <td>, and the .star is a span. I want to add the hover image whenever the user hovers the table cell. It works as long as the cursor doesn't hover the image, because that will result in some serious blinking. Is this deliberate? And is there a way around it?

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animate rotation

- by Mike

I'm trying to animate a rotation using CATransform3DMakeRotation, but the problem is once the animation is finished, the image goes back to its initial position, i.e back to zero. But I'd like to keep it where it finished rotating. How would I do that? edit What I'm trying to do is to create the same compass which comes with the new iPhone. Basically the locationmanager gives me new headings every few seconds (or several per second). Using the new heading and the timestamp, I was trying to get a smooth animation of the image but not getting anywhere. The only thing which seems to work is applying the transform directly, e.g. compassimage.layer.transform = CATransform3DMakeRotation(newHeading.trueHeading *M_PI/180,0,0,1.0): but that's not animated...

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General zoom algorithm for drawing program

- by Steven Sproat

My GUI toolkit, wxPython provides some methods for implementing a user zoom factor, however the quality isn't too good. I'm looking for ideas on how to create a zooming feature, which I know is complicated. I have a bitmap representing my canvas which is drawn to. This is displayed inside a scrolled window. Problems I forsee: - performance when zoomed in and panning around the canvas - difficulties with "real" coordinates and zoomed in coordinates - image quality not degrading with the zoom Using wxPython's SetUserScale() on its device contexts presents image quality like this - this is with a 1px line, at 30% zoomed in. I'm just wondering the general steps I'll need to take and the challenges I'll encounter. Thanks for any suggestions

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Palm webOS CSS Targeting Hack?

- by Tom

Although it is not good practice, I am looking for a CSS hack to target Palm webOS. The problem is that Safari 3+ is awesome, and I can do some things like gradient background animations on text, but only in Safari. Right now I use @media screen and (-webkit-min-device-pixel-ratio:0) {} and it works like a charm, no Opera, Firefox, or whatever, because if I set the background to the image as I do in Safari they will all be ruined. But Palm's browser is based on webkit, and it uses the rules inside, and Palm's browser doesn't support text backgrounds so all I get is the image moving, no text. I would prefer a CSS hack, but if need be a Javascript one will do.

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How do I get a Canon LBP5000 Printer working?

- by Saigun

I have unsuccessfully attempted to install a Canon LBP5000 printer on Ubuntu 11.10. I have attempted all possible methods to be found on the web, but nothing seems to work. My latest attempt was Radu Cotescu's script from http://radu.cotescu.com/how-to-install-canon-lbp-printers-in-ubuntu/ Using the script everything appears to work as described during the installation process, but when attempting to actually print, it remains stuck in “processing” (regardless of what I attempt to print) [There is no additional error message]. Could anyone help me? It would be very much appreciated!

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Linux, how to capture screen, and simulate mouse movements.

- by 2di

Hi All I need to capture screen (as print screen) in the way so I can access pixel color data, to do some image recognition, after that I will need to generate mouse events on the screen such as left click, drag and drop (moving mouse while button is pressed, and then release it). Once its done, image will be deleted. Note: I need to capture whole screen everything that user can see, and I need to simulate clicks outside window of my program (if it makes any difference) Spec: Linux ubuntu Language: C++ Performance is not very important,"print screen" function will be executed once every ~10 sec. Duration of the process can be up to 24 hours so method needs to be stable and memory leaks free (as usuall :) I was able to do in windows with win GDI and some windows events, but I'ev no idea how to do it in Linux. Thanks a lot

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openCV usage cvFindDominantPoints

- by rsinha

Hi, Does anyone know how to use the cvFindDominantPoints API of openCV? I basically have a 1 channel, binary image from which I get a set of contours. Judging from the image, I seem to be getting the correct contours. Now, I am selecting one of these contours to get dominant points of. This contour has about 60 vertices. However, the API call to cvFindDominantPoints is giving me a sequence of points (about 15) that does not even lie on the contour. It is quite far from it. Any insight? my usage: CvSeq *dominantpoints = cvFindDominantPoints(targetSeq, tristorage, CV_DOMINANT_IPAN, 7, 9, 9, 150);

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How to order the images in a mysql database?

- by user305270

Hy! Here is my problem: i have a profile and this profile has for example 100 images. When someone visit this profile the first image will be the first result of my query that sorts by updated_at. But if the user would want to put the image with the (id = 8) to be the first, then (id = 22) then (id = 88) and so on? I need to put another field or is really necessary a new table to make a custom sort on images? and maybe someone explain this to me how to do? thanks, i appreciate your help ;)

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Jquery Uploader not saving to a folder in the site root

- by Iain Simpson

im trying to integrate the Jquery Uploader into my website http://blueimp.github.com/jQuery-File-Upload/ The problem I am having is that I cant seem to get it save the folder I want to to save to. In the UploadHander.php I have the following settings 'script_url' => $this->get_full_url().'/', 'upload_dir' => dirname($_SERVER['SCRIPT_FILENAME']).'./images/machinery/', 'upload_url' => $this->get_full_url().'./images/machinery/', This results in an image uploaded url that looks like this http://domain.com/rcsetch/up/server/php/machinery/image.jpg Other than putting my php files in the root of the website, im not sure how to get it to work, as what I want it to do is upload the files to http://domain.com/images/machinery and not to the create a folder in the directory where all the php files for the uploader are located.

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Android: Is there a universal way to send the MMS on any android devices?

- by Roces

This code works on the plain google devices with native android system. But there is no MMS app in the list on htc sense devices and I don't know about Motorola Blur etc.: final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND); emailIntent.setType("image/png"); emailIntent.putExtra(Intent.EXTRA_STREAM, uri); context.startActivity(Intent.createChooser(emailIntent, context.getString(R.string.send_intent_name))); This code works on the htc sense but not from the Chooser, what I really need: Intent sendIntent = new Intent("android.intent.action.SEND_MSG"); sendIntent.putExtra(Intent.EXTRA_STREAM, uri); sendIntent.setType("image/png"); context.startActivity(sendIntent); But I don't know how to combine this code samples together and I don't know how to determine Htc Sense ui programmatically. Is it right way to support different type of devices? Thank you for answers.

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Using JDBC to asynchronously read large Oracle table

- by Ben George

What strategies can be used to read every row in a large Oracle table, only once, but as fast as possible with JDBC & Java ? Consider that each row has non-trivial amounts of data (30 columns, including large text in some columns). Some strategies I can think of are: Single thread and read table. (Too slow, but listed for clarity) Read the id's into ConcurrentLinkedQueue, use threads to consume queue and query by id in batches. Read id's into a JMS queue, use workers to consume queue and query by id in batches. What other strategies could be used ? For the purpose of this question assume processing of rows to be free.

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Real performance of node.js

- by uther.lightbringer

I've got a question concerning node.js performance. There is quite lot of "benchmarks" and a lot of fuss about great performance of node.js. But how does it stand in real world? Not just process empty request at high speed. If someone could try to compare this scenario: Java (or equivalent) server running an application with complex business logic between receiving request and sending response. How would node.js deal with it? If there was need for a lot of JavaScript processing on server side, is node.js really so fast that it can execute JavaScript, and stand a chance against more heavyveight competitors?

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