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  • Flex chart display with no datapoint

    - by Shah Al
    I need to display price of item for every date in the month. The chart can be Bar chart or plot chart. Question: Suppose there is no data available for 01/15/2010 then, Is there a way to display (01/15/2010) on x axis but no (bar or plot point) corresponding y axis point ? i.e. there will be a empty space between 2 bars or plot points. Currently i am using 0 , But 0 is a valid value. Let me know if such a display is possible.

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  • Meaning of the "Unloading class" messages

    - by elec
    Anyone can explain why the lines below appear in the output console at runtime ? (one possible answer would be full permGen, but this can be ruled out since the program only uses 24MB out of the max100MB available in PermGen) [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor28] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor14] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor4] [Unloading class sun.reflect.GeneratedMethodAccessor5] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor38] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor36] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor22] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor8] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor39] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor16] [Unloading class sun.reflect.GeneratedSerializationConstructorAccessor2] [Unloading class sun.reflect.GeneratedConstructorAccessor1] The program runs with the following params: -Xmx160M -XX:MaxPermSize=96M -XX:PermSize=96M -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+PrintGCTaskTimeStamps -XX:+PrintHeapAtGC -XX:+PrintTenuringDistribution -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -verbose:gc -Xloggc:/logs/gc.log There's plenty of space in the heap and in permGen.

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  • MATLAB: How do I get 3D coordiantes from a user-click?

    - by John
    I'm using Matlab to create a small chess game for one of my courses this semester. The thing I'm having trouble with is having the user be able to select one of the chess pieces. To simplify things, I'm making it so that the user selects a piece by clicking on the square that the chess piece resides on rather than clicking the piece itself (which I assume would be much more difficult). I know how to get the x and y coordinates of the view-port, but how do I transform these coordinates into 3-space coordinates? I know that there are multiple x,y,z coordinates associated with each view-port coordinate, but I'm only interested in the x,y,z coordinate where z = 0 (since the board itself is in the x,y plane that intersects the z axis where z = 0). Thanks!

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  • How would you implement this "WorkerChain" functionality in .NET?

    - by Dan Tao
    Sorry for the vague question title -- not sure how to encapsulate what I'm asking below succinctly. (If someone with editing privileges can think of a more descriptive title, feel free to change it.) The behavior I need is this. I am envisioning a worker class that accepts a single delegate task in its constructor (for simplicity, I would make it immutable -- no more tasks can be added after instantiation). I'll call this task T. The class should have a simple method, something like GetToWork, that will exhibit this behavior: If the worker is not currently running T, then it will start doing so right now. If the worker is currently running T, then once it is finished, it will start T again immediately. GetToWork can be called any number of times while the worker is running T; the simple rule is that, during any execution of T, if GetToWork was called at least once, T will run again upon completion (and then if GetToWork is called while T is running that time, it will repeat itself again, etc.). Now, this is pretty straightforward with a boolean switch. But this class needs to be thread-safe, by which I mean, steps 1 and 2 above need to comprise atomic operations (at least I think they do). There is an added layer of complexity. I have need of a "worker chain" class that will consist of many of these workers linked together. As soon as the first worker completes, it essentially calls GetToWork on the worker after it; meanwhile, if its own GetToWork has been called, it restarts itself as well. Logically calling GetToWork on the chain is essentially the same as calling GetToWork on the first worker in the chain (I would fully intend that the chain's workers not be publicly accessible). One way to imagine how this hypothetical "worker chain" would behave is by comparing it to a team in a relay race. Suppose there are four runners, W1 through W4, and let the chain be called C. If I call C.StartWork(), what should happen is this: If W1 is at his starting point (i.e., doing nothing), he will start running towards W2. If W1 is already running towards W2 (i.e., executing his task), then once he reaches W2, he will signal to W2 to get started, immediately return to his starting point and, since StartWork has been called, start running towards W2 again. When W1 reaches W2's starting point, he'll immediately return to his own starting point. If W2 is just sitting around, he'll start running immediately towards W3. If W2 is already off running towards W3, then W2 will simply go again once he's reached W3 and returned to his starting point. The above is probably a little convoluted and written out poorly. But hopefully you get the basic idea. Obviously, these workers will be running on their own threads. Also, I guess it's possible this functionality already exists somewhere? If that's the case, definitely let me know!

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  • Given an even number of vertices, how to find an optimum set of pairs based on proximity?

    - by Alex Z
    The problem: We have a set of n vertices in 3D euclidean space, and there is an even number of these vertices. We want to pair them up based on their proximity. In other words, we'd like to be able to find a set of vertex pairs, where the vertices in each pair are as close as possible together. We want to minimise sacrificing the proximity between the vertices of any other pairs as much as possible in doing this. I am not looking for the most optimal solution (if it even strictly exists/can be done), just a reasonable one that can be computed relatively quickly. A relatively awful brute force approach involves choosing a vertex and looping through the rest to find its nearest neighbor and then repeating until there are none left. Of course as we near the end of the list the closest vertex could be very far away, but it is the only choice, therefore this can fail badly on the third point above.

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  • Custom cell and Delete/Move indicators

    - by Kamchatka
    Hello, I have a custom UITableViewCell. However, when I got in edit mode, I don't have any Delete and Move indicators appearing. The custom cell draws itself in the contentView. In layoutSubviews, I make sure there is space on the left and one the right of the contentView so that the controls can appear (if this was the problem). - (void)layoutSubviews { self.contentView.frame = CGRectMake(50, 0, self.frame.size.width - 100, sub.thumbnail.size.height + 20); } In the UITableViewController, I return YES in: - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { How could I solve this lack of interactivity. Is there something specific for custom cells? Thanks!

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  • Accessing identical web services using the same client

    - by Krt_Malta
    Hi. I have some web services and I am creating a web client using ws-import. When creating the client I have this line: MyServiceService service = new MyServiceService(); It works fine as it is. I have the same web services running on another server and I was wondering if I could access them using the same client. Is it possible to change the wsdl url of the client? Ctrl-Space in Eclipse gives me 2 parameters which I can enter into MyServiceService which are URL arg0 and Qname arg1. Is this what I'm looking for? And if this is the case what should I put in Qname since I didn't find any Javadoc associated and didn't find it on google neither Thanks and regards, Krt_Malta

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  • Getting key/value pairs from plist-style xml using simplexml in php

    - by Anthony
    Here is an example bit from the xml file: <array> <dict> <key>Name</key> <string>Joe Smith</string> <key>Type</key> <string>Profile</string> <key>Role</key> <string>User</string> <key>Some Number</key> <integer>1</integer> <key>Some Boolean</key> <true/> </dict> </array> I have two separate goals. The first is to extract an array from the dictnode that would look like: [Name] => Joe Smith [Type] => Profile [Role] => User [Some Number] => 1 [Some Boolean] => true It's not crucial that the boolean be included, so if that adds too much complexity, I'd rather just know how to deal with the others for now. The second goal is to be able to select the value node (<string>, <integer>,etc) so that I can change the value. I would need to select it based on the text value of the preceding key element. I think the following XPath should work: //key[.=$keyname]/following-sibling[1] But I'm not sure. Basically, this whole system that Apple uses seems logical, but totally contrary to the XML is supposed to work. If I ran the world, the original XML would look more like: <dict type="array"> <value key="Name" type="string">Joe Smith</value> <value key="Type" type="string">Profile</value> <value key="Role type="string">User</value> <value key="Some Number" type="integer">1</value> <value key="Some Boolean" type="boolean">true</value> </dict> But since it is fairly logical, I am wondering if I'm missing some obvious way of handling it.

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  • Content pulled in via jQuery AJAX is not associating with previous functions

    - by Jarsen
    I'm using the jquery .load() function to pull in data to populate a div with. The content I'm pulling in has CSS selectors that should match up with jQuery click functions I've written. However, when I load in the data, although the correct CSS selectors are there, when I click on areas that should invoke a response from jQuery, nothing happens. Do I need to do some sort of reload? Here's the code I've got for the jQuery AJAX: $(document).ready(function() { // AJAX functionality for drupal nodes $(".ajax_node").click(function() { var ajax_src = $(this).attr("href"); // we're gonna load the href // empty target div and load in content // the space in the string before the #id is necessary $("#ajax_area").empty().load(ajax_src + " #ajax_wrapper"); return false; // stops the link from following through }); // General AJAX fucntionality $(".ajax").click(function() { var ajax_src = $(this).attr("href"); $("#ajax_area").empty().load(ajax_src); return false; }); });

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  • In MVC framworks (such as Ruby on Rails), does usually Model spell as singular and controller and vi

    - by Jian Lin
    I usually see Ruby on Rails books using script/generate model Story name:string link:string which is a singular Story, while when it is controller script/generate controller Stories index then the Story now is Stories, which is plural. Is this a standard on Ruby on Rails? Is it true in other MVC frameworks too, like CakePHP, Symfony, Django, or TurboGears? I see that in the book Rails Space, the controller is also called User, which is the same as the model name, and it is the only exception I see. Update: also, when scaffold is done on Ruby on Rails, then automatically, the model is singular and the controller and view are both plural.

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  • How to log POSTed forms submissions?

    - by justSteve
    Back in the ASP classic days when i needed to write out the name/value pairs of forms submitted by POST i thru this loop into the page: on error resume next for each x in Request.Form Response.AppendToLog x & "=" & Request(x) next It threw all the form fields and values into the log just as GETs are. Does IIS7 .net give me any better method? (this is for the dev/testing portion of the project i don't have any concern about the space or cycles used to accomplish this). thx

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  • How to use CSS to ensure items remain offscreen even if window is resized?

    - by Ashley Ward
    I am trying to implement a type of slider using jquery. However this question is about the CSS involved in trying to achieve the functionality. My site design occupies a central column of width 960px. Within this layout there is a central element, that I wish to slide right, on click of a "next" button, and at the same time, another element of the same class slides in from the left to occupy the space vacated. I have drawn a diagram of what I am trying to achieve. In this diagram the red blocks are the element I want to slide in and out, it is grouped by a div which moves left to produce the effect using jQuery I have 2 main questions: How do I get the correct margin values, given that the browser window width can vary and that all elements that are not the current item should be offscreen? 2.If the user were to resize the margins could be dynamically altered based on the values returned using the jQuery resize() event. Or is there a neater quicker better way of doing it using pure CSS?

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  • Should old/legacy/unused code be deleted from source control repository?

    - by Checkers
    I've encountered this in multiple projects. As the code base evolves, some libraries, applications, and components get abandoned and/or deprecated. Most people prefer to keep them in. The usual argument is that the code does not really take any space, it can be left alone until needed again. So a repository slowly turns into a cesspool of legacy code, where it's hard to find anything. Some people delete old code, since it creates clutter, raises more questions for new people, and you can restore any old snapshot of the code base anyway. However you can't always find the old code if you don't know where to look, as none of the (common) VCS I know offer search over the entire repository including all historical revisions, and the only way to search the old files is to check out the revision where the deleted file exists. What would be a good approach to repository management?

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  • Desktop PC Raid 5 or JBOD?

    - by Sean Lim
    I have a desktop PC and I want to get alot of space for movies, music, and pictures. I probably will not be deleting files. I am running Windows 7 on my system. It is kind of silly I just want the physical drives to be labeled as a single letter drive. And probably map my video, documents, pictures and music on that single drive. The main reason I considered RAID 5 because I would be lazy to get the data I lost and hopefully that if I get a new drive, it would rebuild it. So my question is which would be better? A second question is can I get RAID card that has only 2 internal connectors and still do RAID 5? or do I have to get a RAID card that has 4 internal connectors.

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  • Capturing stdout within the same process in Python

    - by danben
    I've got a python script that calls a bunch of functions, each of which writes output to stdout. Sometimes when I run it, I'd like to send the output in an e-mail (along with a generated file). I'd like to know how I can capture the output in memory so I can use the email module to build the e-mail. My ideas so far were: use a memory-mapped file (but it seems like I have to reserve space on disk for this, and I don't know how long the output will be) bypass all this and pipe the output to sendmail (but this may be difficult if I also want to attach the file)

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  • Parsing a text file with a fixed format in Java

    - by EugeneP
    Suppose I know a text file format, say, each line contains 4 fields like this: firstword secondword thirdword fourthword firstword2 secondword2 thirdword2 fourthword2 ... and I need to read it fully into memory I can use this approach: open a text file while not EOF read line by line split each line by a space create a new object with four fields extracted from each line add this object to a Set Ok, but is there anything better, a special 3-rd party Java library? So that we could define the structure of each text line beforehand and parse the file with some function thirdpartylib.setInputTextFileFormat("format.xml"); thirdpartylib.parse(Set, "pathToFile") ?

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  • How to test the performance of a user's PC in/for Flash?

    - by Jan P.
    Hey, I'm a developer on nice space MMO using Flash. On new PCs performance is quite good, but some features shouldn't be enabled on older PCs because the framerate drops to shit if we do. Flash wasn't made for this, but hey, pushing boundaries is fun. An example is fullscreen mode. Of course every user can manually enable it, but "advertising" it to a user with and oldie PC would be a bad idea - but for the Alienware crowd it would be dumb not to. So I want to find out how "capable" a user's PC is to decide if I should enable or disable some features for him. Any ideas? Thanks, Sujan

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  • Style:Display and Visibility errors ?

    - by dhaliwaljee
    < table border="1" cellpadding="0" cellspacing="0" width="100%"> < tr> < td>1< /td> < td>1< /td> < td>1< /td> < td>1< /td> < td>1< /td> </tr> < tr style="display:block "> < td>2< /td> < td>2< /td> < td>2< /td> < td>2< /td> < td>2< /td> </ tr> < tr style="visibility:hidden "> < td>3< /td> < td>3< /td> < td>3< /td> < td>3< /td> < td>3< /td> < /tr> < tr style="visibility:hidden "> < td>4< /td> < td>4< /td> < td>4< /td> < td>4< /td> < td>4< /td> < /tr> < tr> < td>5< /td> < td>5< /td> < td>5< /td> < td>5< /td> < td>5< /td> < /tr> < tr> < td>6< /td> < /tr> < tr> < td>7< /td> < /tr> < /table> see the code I am using visibility and display for hidden or showing rows but both have errors Visibility hide the row but do not removed space, like "display:none", I can use "display" but it is not working properly with safari and Firefox. Please give me solution for it. My requirement is:- Hide the row and also removed its space on all browsers.

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  • I just don't know what it is, tried everything, IE 7 bug

    - by Emmy
    Has anyone seen this bug? I have a sidebar with a ul nav background image for the hover state, floated right, looks great in all browsers. Then...I added another div underneath it for ad space. inside, there's an anchored image. That image tucks underneath the background image of the nav, but only in IE7 (i abandoned trying to please ie6). So I took it out of the sidebar, played with float, display,height hacks, but nothing works I can declare a large top margin with some more top padding do get it to clear but it breaks the design. i even tried creating a div called clear and put a top margin there. so it displays with this huge gap in chrome, FF, safari but this tiny space between in IE. i even tried creating a div called clear and put a top margin there. I have spent hours trying to find someone with the same problem but to no avail. Any suggestions? Here's a code snippet: <div id="leftsidebar"> <div id="leftnav"> <ul class="slidenav" id="sidenav"> <li id="overview" class="inactive"> <a href="expat.html">expat lifestyle</a> </li> <li id="tips" class="inactive"> <a href="traveltips.html">travel tips</a> </li> <li id="bts" class="inactive"> <a href="bts-mrt.html">bts/mrt</a> </li> <li id="bus" class="inactive"> <a href="bus.html">bus system</a> </li> <li id="van" class="inactive"> <a href="taxi.html">vans/taxis</a> </li> <li id="boat" class="inactive"> <a href="klong.html">boats/klong</a> </li> <li id="boat" class="inactive"> <a href="klong.html">boats/klong</a> </li> <li id="tuk" class="inactive"> <a href="tuk.html">tuk-tuks</a> </li> <li id="train" class="inactive"> <a href="train.html">trains</a> </li> <li id="airport" class="inactive"> <a href="airport.html">int'l airport</a> </li> <li id="dangers" class="inactive"> <a href="dangers.html">dangers</a> </li> <li id="fun" class="inactive"> <a href="fun.html">fun places</a> </li> <li id="shopping" class="inactive"> <a href="shopping.html">shopping</a> </li> </ul> </div> </div> <div id="store"> <a href="astore.amazon.com/ten044-20"; title="Shop WIB store"> <img src="images/WIBstore.png" height="70" width="200" border="none"/> </a> </div> the corresponding CSS: #leftsidebar { float:right; width: 210px; margin: 40px 0 0 0; padding: 0; height:1%; } #store { margin: 20px 0px 0 0px; padding: 0 10px 0 0; float: right; height: 1%; display: inline; } And an image:

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  • Is it safe to catch EXCEPTION_GUARD_PAGE

    - by Michael J
    Environment is VC++ 9 on various Win platforms (XP and later) I'm writing an unhandled exception handler. I have a vague recollection from my kernel days that it was bad to catch an EXCEPTION_GUARD_PAGE, as this was generated to tell the OS to enlarge the stack. My question is twofold: Can such an exception occur in user space? If so, is it safe to catch it? I'm not especially interested in doing anything with it. I just want to know if I need to put special code in to not catch it (as I'm catching everything at the moment).

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  • top-k selection/merge

    - by tcurdt
    I have n sorted lists. These lists are quite long (300000+ tuples). Selecting the top 10 of the individual lists is of course trivial - they are right at the head of the lists. Where it gets more interesting is when I want the top 10 of all the sorted lists. The question is whether there is an algorithm to calculate the combined top 10 having the correct order while cutting off the long tail of the lists. The goal is to reduce the required space. And if there is: How does one find the limit where is is safe to cut? Note: The actual counts are not important. Only the order is.

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  • Good code architecture for this problem?

    - by RCIX
    I am developing a space shooter game with customizable ships. You can increase the strength of any number of properties of the ship via a pair of radar charts*. Internally, i represent each ship as a subclassed SpaceObject class, which holds a ShipInfo that describes various properties of that ship. I want to develop a relatively simple API that lets me feed in a block of relative strengths (from minimum to maximum of what the radar chart allows) for all of the ship properties (some of which are simplifications of the underlying actual set of properties) and get back a ShipInfo class i can give to a PlayerShip class (that is the object that is instantiated to be a player ship). I can develop the code to do the transformations between simplified and actual properties myself, but i would like some recommendations as to what sort of architecture to provide to minimize the pain of interacting with this translator code (i.e. no methods with 5+ arguments or somesuch other nonsense). Does anyone have any ideas? *=not actually implemented yet, but that's the plan.

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  • Actionscript 3 svg XML parsing bug?

    - by Mahir
    Hey I get two different results when using the for each loop below. As far as I can tell there's no difference aside from attributes in the two XML literals. for each (var pathXML:XML in svg.path) { // do stuff... trace(pathXML.@stroke) } // This one works, the loop iterates once over the single path element... var svg:XML = <svg> <path stroke="#00FF00" /> </svg> // This one doesn't, the loop just exits. var svg:XML = <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="612px" height="792px" viewBox="0 0 612 792" enable-background="new 0 0 612 792" xml:space="preserve"> <path fill="#FFFFFF" stroke="#000000" d="M160.333,372.444c0,0,17.778-115.555,60-63.333s27.778-106.666,78.889,40" /> </svg>

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  • Empty or "flush" a file descriptor without read()?

    - by Teddy
    (Note: This is not a question of how to flush a write(). This is the other end of it, so to speak.) Is it possible to empty a file descriptor that has data to be read in it without having to read() it? You might not be interested in the data, and reading it all would therefore waste space and cycles you might have better uses for. If it is not possible in POSIX, do any operating systems have any non-portable ways to do this? UPDATE: Please note that I'm talking about file descriptors, not streams.

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  • Confused about GNU `sort(1)` of a numerical sub field

    - by Chen Levy
    I wish to sort a space separated table, with the numerical value that found on the 2nd field. I can assume that the 2nd field is always fooN but the length of N is unknown: antiq. foo11 girls colleaguing foo2 Leinsdorf Cousy foo0 Montgomeryville bowlegged foo1 pollack Chevrier foo10 ill-conceived candlebomb foo3 seventieths autochthony foo101 re-enable beneficiate foo100 osteometric I read man sort(1) and played with all sort of options. On my system I found the line: sort -n -k2.5 table to work. My question is why? According to the man page: -k, --key=POS1[,POS2] start a key at POS1, end it at POS 2 (origin 1) ... POS is F[.C][OPTS], where F is the field number and C the characterposition in the field. OPTS is one or more single-letter ordering options, which override global ordering options for that key. If no key is given, use the entire line as the key. So why sort -n -k2.4 table don't work and sort -n -k.5 does?

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