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  • UPLOAD DATA IN DATA BASE

    - by rajson
    HI friends, i wish to store image and resume of user in the data base. i am using mysql data base and php5. i want to know that which field i set means data type.and how i set the range (maximum size) for uploaded data.

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  • Floating point arithmetics restricted to integers

    - by user396672
    I use doubles for a uniform implementation of some arithmetic calculations. These calculations may be actually applied to integers too, but there are no C++-like templates in Java and I don't want to duplicate the implementation code, so I simply use "double" version for ints. Does JVM spec guarantees the correctness of integer operations such a <=,=, +, -, *, and / (in case of remainder==0) when the operations are emulated as corresponding floating point ops? (Any integer, of course, has reasonable size to be represented in double's mantissa)

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  • Clip a 4:3 image in WPF with a circle

    - by reckoner
    I am trying to clip a 4:3 image with a circle within a grid control. I need the circle clip to reveal the image from the middle in a perfect circle. See below. The circle should dynamically re-size with the image. I have tried Canvas.Clip and Ellipse+VisualBrush without achieving the correct behavior. Thanks!

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  • In an iPhone app, is it beneficial to tile a background image that has a pattern in it?

    - by Dr Dork
    Here's an example of the type of background image I'm talking about, the iPhone Notes app... Clearly, there's a pattern in it. My question is, if this were an iPad app and the background image was twice the size, would there be any significant benefits to taking advantage of this pattern by tiling the image? Or would it really make no difference in terms of performance and just be easier to load the entire image into a UIImageView? Thanks in advance for all your wisdom!

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  • Calculating all distances between one point and a group of points efficiently in R

    - by dbarbosa
    Hi, First of all, I am new to R (I started yesterday). I have two groups of points, data and centers, the first one of size n and the second of size K (for instance, n = 3823 and K = 10), and for each i in the first set, I need to find j in the second with the minimum distance. My idea is simple: for each i, let dist[j] be the distance between i and j, I only need to use which.min(dist) to find what I am looking for. Each point is an array of 64 doubles, so > dim(data) [1] 3823 64 > dim(centers) [1] 10 64 I have tried with for (i in 1:n) { for (j in 1:K) { d[j] <- sqrt(sum((centers[j,] - data[i,])^2)) } S[i] <- which.min(d) } which is extremely slow (with n = 200, it takes more than 40s!!). The fastest solution that I wrote is distance <- function(point, group) { return(dist(t(array(c(point, t(group)), dim=c(ncol(group), 1+nrow(group)))))[1:nrow(group)]) } for (i in 1:n) { d <- distance(data[i,], centers) which.min(d) } Even if it does a lot of computation that I don't use (because dist(m) computes the distance between all rows of m), it is way more faster than the other one (can anyone explain why?), but it is not fast enough for what I need, because it will not be used only once. And also, the distance code is very ugly. I tried to replace it with distance <- function(point, group) { return (dist(rbind(point,group))[1:nrow(group)]) } but this seems to be twice slower. I also tried to use dist for each pair, but it is also slower. I don't know what to do now. It seems like I am doing something very wrong. Any idea on how to do this more efficiently? ps: I need this to implement k-means by hand (and I need to do it, it is part of an assignment). I believe I will only need Euclidian distance, but I am not yet sure, so I will prefer to have some code where the distance computation can be replaced easily. stats::kmeans do all computation in less than one second.

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  • How to share a dictionary between multiple processes in python without locking

    - by RandomVector
    I need to share a huge dictionary (around 1 gb in size) between multiple processs, however since all processes will always read from it. I dont need locking. Is there any way to share a dictionary without locking? The multiprocessing module in python provides an Array class which allows sharing without locking by setting lock=false however There is no such option for Dictionary provided by manager in multiprocessing module.

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  • C++ pointer to different array

    - by begun
    Assume I have an array a and an array b. Both have the same type and size but different values. Now I create 3 or so pointers that point to different elements in a, you could say a[ 0 ], a[ 4 ] and a[ 13 ]. Now if I overwrite a with b via a=b - Where will the pointers point? Do the pointers still point to their original positions in a but the values they point to are now those of b?

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  • compressing XML file

    - by Sathish
    HI I have an xml file with 500KB size which i need to send it to webservice, so i want to compress this data and send it to the webservice i have heard of some base24Encoding something... Can anyone throw more light on this Suppose if i use GZipStream how can i send the file to the webservice Thanks in Advance

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  • Keep PyGTK Button from Resizing on Label Change

    - by Cap
    I'm working on a PyGTK app with some Buttons that, when clicked, give a text entry dialog, then set the text on the button to whatever was entered in the box. The problem is that if the text is longer than the button can show, the button changes size to accomodate. How do I keep GTK Buttons from resizing when the text changes?

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  • How to make all controls of a column the same width

    - by ant18
    Hi I need to know if there's any way of making all controls of a column the same width, and that all these controls are as wide as the cells that contain them. I added a demo on JSFiddle with the controls I'm using. I tried using size for the input texts and style="width:" for the selects , and even though I managed to make them the same width,(it doesn't seem to work in Chrome) it's kinda difficult , that's why I'd like to know if there is any more straightforward way to do the same thing Any ideas or insights?

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  • Maximum capabilities of MySQL

    - by cdated
    How do I know when a project is just to big for MySQL and I should use something with a better reputation for scalability? Is there a max database size for MySQL before degradation of performance occurs? What factors contribute to MySQL not being a viable option compared to a commercial DBMS like Oracle or SQL Server?

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  • Scaling vectors from a center point?

    - by user146780
    I'm trying to figure out if I have points that make for example a square: * * * * and let's say I know the center of this square. I want a formula that will make it for eample twice its size but from the center * * * * * * * * Therefore the new shape is twice as large and from the center of the polygon. It has to work for any shape not just squares. I'm looking more for the theory behind it more than the implementation. Thanks

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  • [c#] SoundPlayer.PlaySync stopping prematurely

    - by JeffE
    I want to play a wav file synchronously on the gui thread, but my call to PlaySync is returning early (and prematurely stopping playback). The wav file is 2-3 minutes. Here's what my code looks like: //in gui code (event handler) //play first audio file JE_SP.playSound("example1.wav"); //do a few other statements doSomethingUnrelated(); //play another audio file JE_SP.playSound("example2.wav"); //library method written by me, called in gui code, but located in another assembly public static int playSound(string wavFile, bool synchronous = true, bool debug = true, string logFile = "", int loadTimeout = FIVE_MINUTES_IN_MS) { SoundPlayer sp = new SoundPlayer(); sp.LoadTimeout = loadTimeout; sp.SoundLocation = wavFile; sp.Load(); switch (synchronous) { case true: sp.PlaySync(); break; case false: sp.Play(); break; } if (debug) { string writeMe = "JE_SP: \r\n\tSoundLocation = " + sp.SoundLocation + "\r\n\t" + "Synchronous = " + synchronous.ToString(); JE_Log.logMessage(writeMe); } sp.Dispose(); sp = null; return 0; } Some things I've thought of are the load timeout, and playing the audio on another thread and then manually 'freeze' the gui by forcing the gui thread to wait for the duration of the sound file. I tried lengthening the load timeout, but that did nothing. I'm not quite sure what the best way to get the duration of a wav file is without using code written by somebody who isn't me/Microsoft. I suppose this can be calculated since I know the file size, and all of the encoding properties (bitrate, sample rate, sample size, etc) are consistent across all files I intend to play. Can somebody elaborate on how to calculate the duration of a wav file using this info? That is, if nobody has an idea about why PlaySync is returning early. Of Note: I encountered a similar problem in VB 6 a while ago, but that was caused by a timeout, which I don't suspect to be a problem here. Shorter (< 1min) files seem to play fine, so I might decide to manually edit the longer files down, then play them separately with multiple calls.

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  • File uploading with ColdFusion, too big of file timing out?

    - by knawlejj
    A client has the admin ability to upload a PDF to their respective directory and have it listed on their website. All of this works dandy until a PDF reaches a certain file size that makes the server time out. This causes an error and the file uploaded will not succeed. As mentioned in the title, we are using ColdFusion with a command. Is there any java/jquery/flash modules or applications that could resolve this issue?

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  • Can I restore a single table from a full mysql mysqldump file?

    - by Mobius
    I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables form the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know how to effectively edit a text document that size.

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  • Cannot change UIImageView frame in a custom table cell.

    - by jkally
    I have a custom table cell. In it I have put (via the IB) an image view of a certain frame In 'cellForRowAtIndexPath', under certain conditions, I would like to modify the frame of this UIImageView, so I write something like: UIImageView *imgv = (UIImageView *)[cell viewWithTag:1]; CGRect r = CGRectMake(20.0, 20.0, 10.0, 10.0); imgv.frame = r; But nothing expected happens (The frame does move a little though not to where I want, but doesn't change its size at all);

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  • ModalPopupExtender with thmbnail (problem in javascript)

    - by arny
    this is the code,it is not working in Firefox,Chrome,to show full size image unless user click on image for couple of times, I basically replace the thmbnail image with full size image in javascript, here is my code, TransitionDuration="50" FramesPerSecond="40" RequireOpenedPane="false" SelectedIndex="-1" SuppressHeaderPostbacks="true" HeaderCssClass="accordionHeader" ContentCssClass="accordionContent" OnItemDataBound="Accordion1_ItemDataBound" OnItemCommand="Accordion1_ItemCommand" ' ' Width="90px" Height="70px" onclick="togglePopupImage2(this);" CssClass="thumbnail" BorderColor="Navy" BorderStyle="Solid" BorderWidth="1" <table> <tr> <td style="background-color: #2E4d7B; height: 15px; color: White; font: arial bold 12px; padding: 5px"> <label id="imgText" runat="server"> </label> </td> </tr> <tr> <td> <asp:Image ID="imgPopup" CssClass="imgpopup" runat="server" /> </td> </tr> <tr> <td align="center" style="background-color: #2E4d7B; height: 25px;"> <asp:Button ID="btnCancel" runat="server" Text="Close" CssClass="closeimage"/> </td> </tr> </table> </asp:Panel> And javascript code: function togglePopupImage2(thumbnail2) { var imageurl = thumbnail2.src; var temp = new Array(); temp = imageurl.split('.'); var imagepopup = temp[0].substring(0, temp[0].length - 3) + "." + temp[1]; var img = new Image(); img.src = imagepopup; $get('ctl00_MainContentCPH_UserInterfaceID').style.visibility = 'visible'; $get('ctl00_MainContentCPH_imgPopup').src = img.src; //alert(img.src); if (img.width > 750) { if (screen.width == '1024' || screen.width == '800') { $get('ctl00_MainContentCPH_imgPopup').width = 550; //to show the picture in 1024 or 800 resolutions } else { $get('ctl00_MainContentCPH_imgPopup').width = 750; } } else { $get('ctl00_MainContentCPH_imgPopup').width = img.width; } if (img.height > 568) { if (screen.width == '1024' || screen.width == '800') { $get('ctl00_MainContentCPH_imgPopup').height = 350; //to show the picture in 1024 or 800 resolutions } else { $get('ctl00_MainContentCPH_imgPopup').height = 568; } } else { $get('ctl00_MainContentCPH_imgPopup').height = img.height; } // } } Please find the error and let me know what is the right way to achieve this? Thanks in advance

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  • Problem running apps fullscreen in emulator

    - by Haakon
    I've created a device targeting 2.1 and having a screen screen size of 480x800 (WVGA). Some apps, including the one I'm currently writing, as well as the ApiDemos example, won't run fullscreen. I've uploaded a screenshot here: http://img248.imageshack.us/img248/503/emulator.png What could cause something like this? If I run these apps on my HTC Desire (which has the same resolution), they utilize the whole screen like they should.

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