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  • How to decoding the string in iphone

    - by Pugal Devan
    Hi, I want to decode my string. I have used parsing and get a string from RSS feed. In a string these special characters are not allowed &,<, in my app. So server side encoding those characters and give it to the string. So now i got the string like, Actual String : <Tom&Jerry> (only these characters are not allowed in node data & < >). After Encoding: %3CTom%26Jerry%3E. But i need to display the string is <Tom&Jerry> So how can i decode the string. Please help me out. Thanks.

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  • Code editor with autocomplete

    - by Andrey
    I need to create a code editor for my own simple language: className.MethodName(parameterName = 2, ... ) I've created the appropriate grammar and autogenerate parser using ANTLR tool. Now I would like to have an autocomplete for class, method, variables and parameter names. This list should be context dependent, f.e. for "class." it should display methods and for "class.Method(" - parameters. I was going to parse the text and display the list depending on in which node the cursor is. The problem is that for incomplete code like "aaa.bbb(" the parser produces an error instead of a syntax tree. Any idea how to solve this problem? Maybe I'm on the wrong way and I shouldn't parse code to display autocomplete?

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  • Gluster strange issue with shared mount point like seprate mount.

    - by Satish
    I have two nodes and for experiment i have install glusterfs and create volume and successfully mounted on own node, but if i create file in node1 it is not showing in node2, look like both behaving like they are separate. node1 10.101.140.10:/nova-gluster-vol 2.0G 820M 1.2G 41% /mnt node2 10.101.140.10:/nova-gluster-vol 2.0G 33M 2.0G 2% /mnt volume info split brian $ sudo gluster volume heal nova-gluster-vol info split-brain Gathering Heal info on volume nova-gluster-vol has been successful Brick 10.101.140.10:/brick1/sdb Number of entries: 0 Brick 10.101.140.20:/brick1/sdb Number of entries: 0 test node1 $ echo "TEST" > /mnt/node1 $ ls -l /mnt/node1 -rw-r--r-- 1 root root 5 Oct 27 17:47 /mnt/node1 node2 (file isn't there, while they are shared mount) $ ls -l /mnt/node1 ls: cannot access /mnt/node1: No such file or directory What i am missing??

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  • parentNode.parentNode.rowindex to delete a row in a dynamic table

    - by billy85
    I am creating my rows dynamically when the user clicks on "Ajouter". <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script> function getXhr(){ var xhr = null; if(window.XMLHttpRequest) // Firefox and others xhr = new XMLHttpRequest(); else if(window.ActiveXObject){ // Internet Explorer try { xhr = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xhr = new ActiveXObject("Microsoft.XMLHTTP"); } } else { // XMLHttpRequest not supported by your browser alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); xhr = false; } return xhr } /** * method called when the user clicks on the button */ function go(){ var xhr = getXhr() // We defined what we gonna do with the response xhr.onreadystatechange = function(){ // We do somthing once the server's response is OK if(xhr.readyState == 4 && xhr.status == 200){ //alert(xhr.responseText); var body = document.getElementsByTagName("body")[0]; // Retrieve <table> ID and create a <tbody> element var tbl = document.getElementById("table"); var tblBody = document.createElement("tbody"); var row = document.createElement("tr"); // Create <td> elements and a text node, make the text // node the contents of the <td>, and put the <td> at // the end of the table row var cell_1 = document.createElement("td"); var cell_2 = document.createElement("td"); var cell_3 = document.createElement("td"); var cell_4 = document.createElement("td"); // Create the first cell which is a text zone var cell1=document.createElement("input"); cell1.type="text"; cell1.name="fname"; cell1.size="20"; cell1.maxlength="50"; cell_1.appendChild(cell1); // Create the second cell which is a text area var cell2=document.createElement("textarea"); cell2.name="fdescription"; cell2.rows="2"; cell2.cols="30"; cell_2.appendChild(cell2); var cell3 = document.createElement("div"); cell3.innerHTML=xhr.responseText; cell_3.appendChild(cell3); // Create the fourth cell which is a href var cell4 = document.createElement("a"); cell4.appendChild(document.createTextNode("[Delete]")); cell4.setAttribute("href","javascrit:deleteRow();"); cell_4.appendChild(cell4); // add cells to the row row.appendChild(cell_1); row.appendChild(cell_2); row.appendChild(cell_3); row.appendChild(cell_4); // add the row to the end of the table body tblBody.appendChild(row); // put the <tbody> in the <table> tbl.appendChild(tblBody); // appends <table> into <body> body.appendChild(tbl); // sets the border attribute of tbl to 2; tbl.setAttribute("border", "1"); } } xhr.open("GET","fstatus.php",true); xhr.send(null); } </head> <body > <h1> Create an Item </h1> <form method="post"> <table align="center" border = "2" cellspacing ="0" cellpadding="3" id="table"> <tr><td><b>Functionality Name:</b></td> <td><b>Description:</b></td> <td><b>Status:</b></td> <td><input type="button" Name= "Ajouter" Value="Ajouter" onclick="go()"></td></tr> </table> </form> </body> </html> Now, I would like to use the href [Delete] to delete one particular row. I wrote this: <script type="text/javascript"> function deleteRow(r){ var i=r.parentNode.parentNode.rowIndex; document.getElementById('table').deleteRow(i); } </script> When I change the first code like this: cell4.setAttribute("href","javascrit:deleteRow(this);"); I got an error: The page cannot be displayed. I am redirected to a new pagewhich can not be displayed. How could I delete my row by using the function deleteRow(r)? table is the id of my table Thanks. Billy85

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  • Graph visualization code in javascript?

    - by Chris Farmer
    Hi. I have a data structure that represents a directed graph, and I want to render that dynamically on an HTML page. Does anyone know of any javascript code that can do a reasonable job with graph layout? These graphs will usually be just a few nodes, maybe ten at the very upper end, so my guess is that performance isn't going to be a big deal. Ideally, I'd like to be able to hook it in with jQuery so that users can tweak the layout manually by dragging the nodes around. Edit: Google's Visualization API seems to be more "graphs as charts" oriented than "graphs as nodes" oriented. I didn't see any node-oriented visualizations already built there, anyway. Do you know that one exists?

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  • java.io.IOException: Invalid argument

    - by Luixv
    Hi I have a web application running in cluster mode with a load balancer. It consists in two tomcats (T1, and T2) addressing only one DB. T2 is nfs mounted to T1. This is the only dofference between both nodes. I have a java method generating some files. If the request runs on T1 there is no problem but if the request is running on node 2 I get an exception as follows: java.io.IOException: Invalid argument at java.io.FileOutputStream.close0(Native Method) at java.io.FileOutputStream.close(FileOutputStream.java:279) The corresponding code is as follows: for (int i = 0; i < dataFileList.size(); i++) { outputFileName = outputFolder + fileNameList.get(i); FileOutputStream fileOut = new FileOutputStream(outputFileName); fileOut.write(dataFileList.get(i), 0, dataFileList.get(i).length); fileOut.flush(); fileOut.close(); } The exception appears at the fileOut.close() Any hint? Luis

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  • What should I consider when deploying a new web farm?

    - by tsilb
    My web app has been chugging along just great in Production for years with one App server and one Web server. Now we're moving to a multi-server environment with 2 App and 3 Web servers. I have enough time to make changes before the go-live. As a Developer, what considerations should I take into account from coding, deployment, and architectural/ecosystem management perspectives? Already on my list: Remove tight-coupling between servers Applicable files (i.e. downloadables) stored in IMAGE fields in SQL instead of files on app server Deployment: Take out node out of the farm at a time

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  • Can anyone tell me what the authors mean on this line?

    - by Anirudh Goel
    i was going through this link: FAT16 Basics to Assemble Clusters. I have read the structures involved in defining a directory entry in FAT. Now when giving the example for a FAT16 File, it says the data cluster is 0x03 for the example file MyFile.txt. Which means if we logically compute the Data Cluster we will be able to reach to the first node which happens to be cluster no 3. But what I fail to understand is what the author is trying to say in the next line where it says What we can see in the File Allocation Table at this moment? How suddenly we reach to the File Allocation Table? Weren't we already there when we were going through the information of Myfile.txt? I couldn't find any reason how suddenly the author jumped to an offset location of 00000200 and is identifying the emptiness of the clusters. It will be great if someone can help me understand. Thanks

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  • How to Serialize Binary Tree

    - by Veljko Skarich
    I went to an interview today where I was asked to serialize a binary tree. I implemented an array-based approach where the children of node i (numbering in level-order traversal) were at the 2*i index for the left child and 2*i + 1 for the right child. The interviewer seemed more or less pleased, but I'm wondering what serialize means exactly? Does it specifically pertain to flattening the tree for writing to disk, or would serializing a tree also include just turning the tree into a linked list, say. Also, how would we go about flattening the tree into a (doubly) linked list, and then reconstructing it? Can you recreate the exact structure of the tree from the linked list? Thank you/

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  • Java Heap Overflow, Forcing Garbage Collection

    - by Nicholas
    I've create a trie tree with an array of children. When deleting a word, I set the children null, which I would assume deletes the node(delete is a relative term). I know that null doesn't delete the child, just sets it to null, which when using a large amount of words it causes to overflow the heap. Running a top on linux, I can see my memory usage spike to 1gb pretty quickly, but if I force garbage collection after the delete (Runtime.gc()) the memory usage goes to 50mb and never above that. From what I'm told, java by default runs garbage collection before a heap overflow happens, but I can't see to make that happen.

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  • Efficiency of while(true) ServerSocket Listen

    - by Submerged
    I am wondering if a typical while(true) ServerSocket listen loop takes an entire core to wait and accept a client connection (Even when implementing runnable and using Thread .start()) I am implementing a type of distributed computing cluster and each computer needs every core it has for computation. A Master node needs to communicate with these computers (invoking static methods that modify the algorithm's functioning). The reason I need to use sockets is due to the cross platform / cross language capabilities. In some cases, PHP will be invoking these java static methods. I used a java profiler (YourKit) and I can see my running ServerSocket listen thread and it never sleeps and it's always running. Is there a better approach to do what I want? Or, will the performance hit be negligible? Please, feel free to offer any suggestion if you can think of a better way (I've tried RMI, but it isn't supported cross-language. Thanks everyone

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  • Injecting an XML fragment into the current document from an external file

    - by makenai
    I'm currently parsing an XML file using REXML and trying to come up with a way of inserting an XML fragment from an internal file. Currently, I'm using some logic like the following: doc.elements.each('//include') do |element| handleInclude( element ) end def handleInclude( element ) if filename = element.attributes['file'] data = File.open( filename ).read doc = REXML::Document.new( data ) element.parent.replace_child( element, doc ) end end Where my XML looks like the following: <include file="test.xml" /> But this seems a little bit clunky, and I'm worried that REXML might not always parse XML fragments correctly due to absence of a proper root node in some cases. Is there a better way of doing this? Concern #2: REXML seems not to pick up my changes after I replace elements. For example, after making a change: doc.elements.each('rootNode/*') do |element| end ..picks up neither the original element I replaced, nor the one I replaced it with. Is there some trick to getting REXML to rescan its' tree?

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  • Trouble with copying dictionaries and using deepcopy on an SQLAlchemy ORM object

    - by Az
    Hi there, I'm doing a Simulated Annealing algorithm to optimise a given allocation of students and projects. This is language-agnostic pseudocode from Wikipedia: s ? s0; e ? E(s) // Initial state, energy. sbest ? s; ebest ? e // Initial "best" solution k ? 0 // Energy evaluation count. while k < kmax and e > emax // While time left & not good enough: snew ? neighbour(s) // Pick some neighbour. enew ? E(snew) // Compute its energy. if enew < ebest then // Is this a new best? sbest ? snew; ebest ? enew // Save 'new neighbour' to 'best found'. if P(e, enew, temp(k/kmax)) > random() then // Should we move to it? s ? snew; e ? enew // Yes, change state. k ? k + 1 // One more evaluation done return sbest // Return the best solution found. The following is an adaptation of the technique. My supervisor said the idea is fine in theory. First I pick up some allocation (i.e. an entire dictionary of students and their allocated projects, including the ranks for the projects) from entire set of randomised allocations, copy it and pass it to my function. Let's call this allocation aOld (it is a dictionary). aOld has a weight related to it called wOld. The weighting is described below. The function does the following: Let this allocation, aOld be the best_node From all the students, pick a random number of students and stick in a list Strip (DEALLOCATE) them of their projects ++ reflect the changes for projects (allocated parameter is now False) and lecturers (free up slots if one or more of their projects are no longer allocated) Randomise that list Try assigning (REALLOCATE) everyone in that list projects again Calculate the weight (add up ranks, rank 1 = 1, rank 2 = 2... and no project rank = 101) For this new allocation aNew, if the weight wNew is smaller than the allocation weight wOld I picked up at the beginning, then this is the best_node (as defined by the Simulated Annealing algorithm above). Apply the algorithm to aNew and continue. If wOld < wNew, then apply the algorithm to aOld again and continue. The allocations/data-points are expressed as "nodes" such that a node = (weight, allocation_dict, projects_dict, lecturers_dict) Right now, I can only perform this algorithm once, but I'll need to try for a number N (denoted by kmax in the Wikipedia snippet) and make sure I always have with me, the previous node and the best_node. So that I don't modify my original dictionaries (which I might want to reset to), I've done a shallow copy of the dictionaries. From what I've read in the docs, it seems that it only copies the references and since my dictionaries contain objects, changing the copied dictionary ends up changing the objects anyway. So I tried to use copy.deepcopy().These dictionaries refer to objects that have been mapped with SQLA. Questions: I've been given some solutions to the problems faced but due to my über green-ness with using Python, they all sound rather cryptic to me. Deepcopy isn't playing nicely with SQLA. I've been told thatdeepcopy on ORM objects probably has issues that prevent it from working as you'd expect. Apparently I'd be better off "building copy constructors, i.e. def copy(self): return FooBar(....)." Can someone please explain what that means? I checked and found out that deepcopy has issues because SQLAlchemy places extra information on your objects, i.e. an _sa_instance_state attribute, that I wouldn't want in the copy but is necessary for the object to have. I've been told: "There are ways to manually blow away the old _sa_instance_state and put a new one on the object, but the most straightforward is to make a new object with __init__() and set up the attributes that are significant, instead of doing a full deep copy." What exactly does that mean? Do I create a new, unmapped class similar to the old, mapped one? An alternate solution is that I'd have to "implement __deepcopy__() on your objects and ensure that a new _sa_instance_state is set up, there are functions in sqlalchemy.orm.attributes which can help with that." Once again this is beyond me so could someone kindly explain what it means? A more general question: given the above information are there any suggestions on how I can maintain the information/state for the best_node (which must always persist through my while loop) and the previous_node, if my actual objects (referenced by the dictionaries, therefore the nodes) are changing due to the deallocation/reallocation taking place? That is, without using copy?

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  • What would make offsetParent null?

    - by Brian Ramsay
    I am trying to do positioning in JavaScript. I am using a cumulative position function based on the classic quirksmode function that sums offsetTop and offsetLeft for each offsetParent until the top node. However, I am running into an issue where the element I'm interested in has no offsetParent in Firefox. In IE offsetParent exists, but offsetTop and offsetLeft all sum up to 0, so it has the same problem in effect as in Firefox. What would cause an element that is clearly visible and usable on the screen to not have an offsetParent? Or, more practically, how can I find the position of this element in order to place a drop-down beneath it?

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  • Create an grid array...

    - by Anicho
    Okay so I am looking to create a grided array in OGRE3D game engine but the array is generic my array skills are pretty basic and need work so I am posting this just to be sure I am doing this correctly. #define GRIDWIDTH 10 #define GRIDHEIGHT 10 int myGrid [HEIGHT][WIDTH]; int n,m; int main () { for (n=0;n<HEIGHT;n++) for (m=0;m<WIDTH;m++) { jimmy[n][m]=(n+1)*(m+1); } return 0; } I am assuming the above will return: 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Then I can assign each point in the array to a valid node in OGRE3D to create a grid in 3D view would this work? Just need to tell me if I am doing it right or wrong dont need the ogre3d code....

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  • .htaccess : Forward any link to /index.htm

    - by Kevin
    Hey all, I'd like to do the following: If a user gets to a url or types it in, and it is along the lines of any the following: /path/path/path /path /path/path/ I would like htaccess to forward them to that url + /index.htm before triggering a 404. Also, I would like to ignore this rule for certain paths. Here is what I was trying and wasn't having success: RewriteCond %{REQUEST_URI} !^(admin) RewriteCond %{REQUEST_URI} !^(node) RewriteRule ^/(.*)/$ $1/index.htm [L] Here is how the app is outlined. It is actually a subdirectory within an application as the site is in transition at the moment. ParentApp/ /folder/ /folder/ /Drupal/ /(new application here) /... /...

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  • sproutcore or cappucino for web app development?

    - by swami
    I recently found out about the sproutcore and capuccino frameworks for web app development as proper MVC approach to creating Desktop-like applications. As far as I could understand, the main difference between the two frameworks is that Cappucino abstracts away the HTML+CSS+Javascript to Objective-J - a new programming language developed be the creators of Capuccino that adds OO capabilities to Javascript, whereas Sproutcore uses HTML5,CSS,Javascript. After lots of pondering, I thought it's probably best to go with technologies we know, so I downloaded the Sproutcore tools and did the tutorials, and I have to say I was very impressed. Just the kind of thing I was looking for, for organizing a complex web app. However, I just stumbled across the following link: http://charlesjolley.sys-con.com/node/1341228 in which Charles Jolley (the creator of Sproutcore) syas that he's tired of waiting for the HTML5 and ECMAScript5 specs to get finalized, and announces that from version 1.1 onwards they will be switching to Objective-J ! So now the question is - what will actually differentiate Sproutcore and Capuccino - and which one should I choose now? Kind Regards Swami

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  • TreeNodes don't get collected with weakevent solution

    - by Marcus
    Hi, When I use this method http://stackoverflow.com/questions/1089309/weak-events-in-net (by Egor) to hook up a event i a inherited treenode, the tree node never gets collected, is there any speciall case with tree nodes and GC? public class MyTreeNode : TreeNode { public MyTreeNode(Entity entity) { entity.Children.ListChanged += new ListChangedEventHandler(entityChildren_ListChanged).MakeWeak(eh => entity.Children.ListChanged -= eh); } } Entity.Children is a bindinglist. I made tests with a destructor on MyTreeNode and invoking GC.Collect(), with the weak eventhandler the treenode never gets collected but i DOES get collected WIHTOUT the weak eventhandler.

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  • at what point in the test cycle are the test results written to a file?

    - by jcollum
    I'd like to take the entirety of the test results and publish it to a database. Got the database, got the table, got the script to publish it. Question is, at what point in the ms-test cycle would the results be fully written to the file? And how can I get the path to that file? I'd especially like to grab the "TextMessages" node and put it into my database. I assumed AssemblyCleanup, but the TestContext doesn't seem to be available then.

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  • How can I show SQL Server LOGS (2005)

    - by Marcin Rybacki
    Hello, I'm trying to track the error thrown by SQL Server 2005. The problem is SQL Server reports it in my native language so it's hard for me to google it. I think that the core issue would be avialable in English in SQL Server LOGS. I'm running SQL Server Management Studio Express, going to "Management" node, and then SQL Server Logs. I can see the list of logs but I cannot enter them, the only available option in context menu is Refresh. Could you help me to show the contents of those logs?

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  • [Alfresco] property qualified-name in method getContentReader

    - by Ar3s
    Hi there, I first apologize for my poor english level and maybe for the stupidity of my question ;) I am on an alfresco project to learn how it works. I have to browse programatically my content repository and gather datas all along. In order to do that I guessed I had to use a ContentReader (I get from my ContentService) but the method getReader wants a nodeRef and a propertyQualifiedName. I am ok with the nodeRef, I get what it's needed for. But the propertyQualifiedName puzzles me, I barely get what it is but I frankly don't get how it is used. Reading some alfresco forum threads I get more and more scared that I dont even get how a reader works, I somewhere saw that a reader can read only one node and only one time per instance. If anyone knows a bit about the Java API for Alfresco Content Repository use I am all hears ! Cheers all !

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  • Castor: how to map a simple list of strings?

    - by Dmitriy
    I have the following field in my class: private List<String> messages; Here's the mapping I have: <field name="messages" collection="arraylist" type="string" container="false> <bind-xml name="errors" node="element"/> </field> This is what I get as a result of marshalling: <errors><string>message1</string><string>message2</string></errors> And this is what I want to achieve: <errors><error>message1</error><error>message2</error></errors> Any help is appreciated!

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  • tomcat 6 - Cluster / BackupManager

    - by Kevin
    Hi, I have a question regarding Clustering (session replication/failover) in tomcat 6 using BackupManager. Reason I chose BackupManager, is because it replicates the session to only one other server. I am going to run through the example below to try and explain my question. I have 6 nodes setup in a tomcat 6 cluster with BackupManager. The front end is one Apache server using mod_jk with sticky session enabled Each node has 1 session each. node1 has a session from client1 node2 has a session from client2 .. .. Now lets say node1 goes down ; assuming node2 is the backup, node2 now has two sessions (for client2 and client1) The next time client1 makes a request, what exactly happens ? Does Apache "know" that node1 is down and does it send the request directly to node2 ? =OR= does it try each of the 6 instances and find out the hard way who the backup is ?

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  • How can I get jQuery to perform a synchronous, rather than asynchronous, AJAX request?

    - by Artem Tikhomirov
    Hello. I have a javascript widget witch provides standard extension points. One of them is the beforecreate function. It should return false to prevent an item from being created. I've added an AJAX call into this function using jQuery: beforecreate: function(node,targetNode,type,to) { jQuery.get('http://example.com/catalog/create/' + targetNode.id + '?name=' + encode(to.inp[0].value), function(result) { if(result.isOk == false) alert(result.message); }); } But I want to prevent my widget from creating the item, so I should return false in the mother-function, not in the callback. Is there any way to perform a synchronized AJAX request using jQuery or any other API? Thanks.

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