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  • How do I change an attribute in an HTML table's cell if I know the row and column index of the cell?

    - by Mark
    I know nothing about jQuery but am an experienced C++ programmer (not sure if that helps or hurts). I found jQuery code that gives me the row and column index of a cell in an HTML table when a user clicks on that cell. Using such row-column index numbers, I need to change an attribute's value in the previously selected cell and in the cell just clicked. The index numbers are produced and saved with this code: var $trCurrent = 0; // Index of cell selected when page opens var $tdCurrent = 0; // i.e., previously selected cell $(document).ready(function () { $("td").click(function () { // How toclear previously selected cell's attribute here? ('class', 'recent') var oTr = $(this).parents("tr"); $tdCurrent = oTr.children("td").index(this); }); $("tr").click(function () { $trCurrent = $(this)[0].rowIndex; // How to set new attributes here? ('class', 'current'); // and continue work using information from currently selected cell }); }); Any help or hints would be appreciated. I do not even know if this is the way I should get the index of the row and column. Thanks.

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  • SQL Server, how to join a table in a "rotated" format (returning columns instead of rows)?

    - by Joshua Carmody
    Sorry for the lame title, my descriptive skills are poor today. In a nutshell, I have a query similar to the following: SELECT P.LAST_NAME, P.FIRST_NAME, D.DEMO_GROUP FROM PERSON P JOIN PERSON_DEMOGRAPHIC PD ON PD.PERSON_ID = P.PERSON_ID JOIN DEMOGRAPHIC D ON D.DEMOGRAPHIC_ID = PD.DEMOGRAPHIC_ID This returns output like this: LAST_NAME FIRST_NAME DEMO_GROUP --------------------------------------------- Johnson Bob Male Smith Jane Female Smith Jane Teacher Beeblebrox Zaphod Male Beeblebrox Zaphod Alien Beeblebrox Zaphid Politician I would prefer the output be similar to the following: LAST_NAME FIRST_NAME Male Female Teacher Alien Politician --------------------------------------------------------------------------------------------------------- Johnson Bob 1 0 0 0 0 Smith Jane 0 1 1 0 0 Beeblebrox Zaphod 1 0 0 1 1 The number of rows in the DEMOGRAPHIC table varies, so I can't say with certainty how many columns I need. The query needs to be flexible. Yes, it would be trivial to do this in code. But this query is one piece of a complicated set of stored procedures, views, and reporting services, many of which are outside my sphere of influence. I need to produce this output inside the database to avoid breaking the system. Any ideas? This is MS SQL Server 2005, by the way. Thanks.

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  • How to read special characters from stdin in Python?

    - by erickrf
    I'm having trouble reading special characters from stdin. Here are my attempts: import os dir = raw_input("Dir name: ") Dir name: c:/á os.chdir(dir) WindowsError: [Error 2] The system cannot find the file specified: 'c:/\x81\xe1' Ok, so I tried to get the default system encoding and recode the string from stdin: import locale encoding = locale.getdefaultlocale()[1] print encoding cp1252 unicode(dir, encoding) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "c:\Python26\lib\encodings\cp1252.py", line 15, in decode return codecs.charmap_decode(input,errors,decoding_table) UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 3: character maps to <undefined> Now, I don't know how to solve this. Nor can I understand - why is there a problem when I try to access a directory with a name written in the system default encoding itself??

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  • Improving method to read signed 8-bit integers from hexadecimal.

    - by JYelton
    Scenario: I have a string of hexadecimal characters which encode 8-bit signed integers. Each two characters represent a byte which employ the leftmost (MSB) bit as the sign (rather than two's complement). I am converting these to signed ints within a loop and wondered if there's a better way to do it. There are too many conversions and I am sure there's a more efficient method that I am missing. Current Code: string strData = "FFC000407F"; // example input data, encodes: -127, -64, 0, 64, 127 int v; for (int x = 0; x < strData.Length/2; x++) { v = HexToInt(strData.Substring(x * 2, 2)); Console.WriteLine(v); // do stuff with v } private int HexToInt(string _hexData) { string strBinary = Convert.ToString(Convert.ToInt32(_hexData, 16), 2).PadLeft(_hexData.Length * 4, '0'); int i = Convert.ToInt32(strBinary.Substring(1, 7), 2); i = (strBinary.Substring(0, 1) == "0" ? i : -i); return i; } Question: Is there a more streamlined and direct approach to reading two hex characters and converting them to an int when they represent a signed int (-127 to 127) using the leftmost bit as the sign?

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  • [C#] Improving method to read signed 8-bit integers from hexadecimal.

    - by JYelton
    Scenario: I have a string of hexadecimal characters which encode 8-bit signed integers. Each two characters represent a byte which employ the leftmost (MSB) bit as the sign (rather than two's complement). I am converting these to signed ints within a loop and wondered if there's a better way to do it. There are too many conversions and I am sure there's a more efficient method that I am missing. Current Code: string strData = "FFC000407F"; // example input data, encodes: -127, -64, 0, 64, 127 int v; for (int x = 0; x < strData.Length/2; x++) { v = HexToInt(strData.Substring(x * 2, 2)); Console.WriteLine(v); // do stuff with v } private int HexToInt(string _hexData) { string strBinary = Convert.ToString(Convert.ToInt32(_hexData, 16), 2).PadLeft(_hexData.Length * 4, '0'); int i = Convert.ToInt32(strBinary.Substring(1, 7), 2); i = (strBinary.Substring(0, 1) == "0" ? i : -i); return i; } Question: Is there a more streamlined and direct approach to reading two hex characters and converting them to an int when they represent a signed int (-127 to 127) using the leftmost bit as the sign?

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  • How do I read live camera data on the iPhone (like Microsoft Tag Reader)?

    - by Bill
    While the user is still in UIImagePickerController, I'd like to be able to get a UIImage representation of the image in the camera, make some changes to the image, and then display the altered image instead of the image coming directly from the camera. How can I do this? I tried setting a timer and calling takePicture, but calling it seemed to have no effect. The documentation says: Calling this method while an image is being captured has no effect. You must wait until the associated delegate object receives an imagePickerController:didFinishPickingMediaWithInfo: message before you can capture another picture. So how can I do this? I know that it's possible, since apps like Tag Reader are able to detect when something specific rolls in front of the camera. Thanks!

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  • How to maintain an ordered table with Core Data (or SQL) with insertions/deletions?

    - by Jean-Denis Muys
    This question is in the context of Core Data, but if I am not mistaken, it applies equally well to a more general SQL case. I want to maintain an ordered table using Core Data, with the possibility for the user to: reorder rows insert new lines anywhere delete any existing line What's the best data model to do that? I can see two ways: 1) Model it as an array: I add an int position property to my entity 2) Model it as a linked list: I add two one-to-one relations, next and previous from my entity to itself 1) makes it easy to sort, but painful to insert or delete as you then have to update the position of all objects that come after 2) makes it easy to insert or delete, but very difficult to sort. In fact, I don't think I know how to express a Sort Descriptor (SQL ORDER BY clause) for that case. Now I can imagine a variation on 1): 3) add an int ordering property to the entity, but instead of having it count one-by-one, have it count 100 by 100 (for example). Then inserting is as simple as finding any number between the ordering of the previous and next existing objects. The expensive renumbering only has to occur when the 100 holes have been filled. Making that property a float rather than an int makes it even better: it's almost always possible to find a new float midway between two floats. Am I on the right track with solution 3), or is there something smarter?

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  • using jquery to add tr

    - by user306472
    I added a jquery function to add a <tr> dynamically at the end of my table. It worked fine until I added table headers to my table. After I did this, the function started adding 2 trs at a time to the table. What happened? HTML: <table id="table" border="0"> <th>Col 1</th><th>Col2</th><th>col3</th> <tbody> <tr> <td> <select> <option value ="one">one</option> <option value="two">two</option> </select> </td> <td> <input type="text"></input> </td> <td> <input type="text"></input> </td> </tr> </tbody> </table> JQuery code: $(function(){ $('a#add').click(function(){ $('#table > tbody').append('<tr><td><select><option value ="one">one</option><option value="two">two</option></select></td><td><input type="text"></input></td><td><input type="text"></input></td></tr>'); });

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  • How do I get my code to read the spaces between longs?

    - by WahtsUpWorld
    I apologize for any inconvenience that may occur in answering my question, I'm fairly new to programming and I'm so far only in the last weeks of my community college Java I class. The problem I am facing is in my code of which I cannot seem to get the PrintWriter to address the spaces in between my longs' phone number and social security I.D. The entire code consists of two classes in which one pulls from the other the information needed to parse and present the file writer/print writer. Here is the entire code w/ the second class after it: public class FinalProjectGroup1 { public static void main(String[] args) { } public String name; public long ssid; public double pay; public String address; public long number; public void cleanUpConstructor() {} public FinalProjectGroup1(String name, String address, double pay, long ssid, long number){ this.name = name; this.pay = pay; this.ssid = ssid; this.address = address; this.number = number; cleanUpConstructor(); } public void setName(String name) { this.name = name; } public String getName() { return name; } public void setPay(double pay) { this.pay = pay; } public double getPay() { return pay; } public void setSSID(long ssid) { this.ssid = ssid; } public long getSSID() { return ssid; } public void setAddress(String address) { this.address = address; } public String getAddress() { return address; } public void setNumber(long number) { this.number = number; } public long getNumber() { return number; } } SECOND CLASS import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JLabel; import java.awt.Font; import javax.swing.JFileChooser; import javax.swing.JButton; import javax.swing.JTextField; import FinalProjectGroup1; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.io.FileWriter; import java.io.PrintWriter; public class FinalProjectGroup1Window { public JFrame frmTheBosssSecretary; public JTextField txtName; public JTextField txtSSID; public JTextField txtAddress; public JTextField txtNumber; public JTextField txtPay; public JTextField txtFindName; public JTextField txtFindSSID; public JTextField txtFindPay; public JTextField txtFolder; public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { FinalProjectGroup1Window window = new FinalProjectGroup1Window(); window.frmTheBosssSecretary.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } public FinalProjectGroup1Window() { initialize(); } private void initialize() { frmTheBosssSecretary = new JFrame(); frmTheBosssSecretary.setFont(new Font("Times New Roman", Font.PLAIN, 12)); frmTheBosssSecretary.setTitle("The Boss's Secretary: Employee Generator/Finder"); frmTheBosssSecretary.setBounds(100, 100, 547, 302); frmTheBosssSecretary.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frmTheBosssSecretary.getContentPane().setLayout(null); JLabel lblFile = new JLabel("Employee Folder:"); lblFile.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFile.setBounds(10, 10, 93, 14); frmTheBosssSecretary.getContentPane().add(lblFile); JLabel lblFindEmployee = new JLabel("Employee Finder"); lblFindEmployee.setFont(new Font("Times New Roman", Font.BOLD, 18)); lblFindEmployee.setBounds(194, 159, 142, 20); frmTheBosssSecretary.getContentPane().add(lblFindEmployee); JLabel lblEmployeeName = new JLabel("Employee Name:"); lblEmployeeName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblEmployeeName.setBounds(10, 35, 93, 14); frmTheBosssSecretary.getContentPane().add(lblEmployeeName); JLabel lblSSID = new JLabel("Employee SSID:"); lblSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblSSID.setBounds(10, 135, 85, 14); frmTheBosssSecretary.getContentPane().add(lblSSID); JLabel lblAddress = new JLabel("Employee Address:"); lblAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblAddress.setBounds(10, 60, 105, 14); frmTheBosssSecretary.getContentPane().add(lblAddress); JLabel lblPhoneNumber = new JLabel("Employee Phone Number:"); lblPhoneNumber.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblPhoneNumber.setBounds(10, 85, 134, 14); frmTheBosssSecretary.getContentPane().add(lblPhoneNumber); JLabel lblPayRate = new JLabel("Employee Pay Rate:"); lblPayRate.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblPayRate.setBounds(10, 110, 105, 14); frmTheBosssSecretary.getContentPane().add(lblPayRate); JLabel lblFindEmployeeName = new JLabel("Find Employee Name:"); lblFindEmployeeName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindEmployeeName.setBounds(10, 183, 115, 14); frmTheBosssSecretary.getContentPane().add(lblFindEmployeeName); JLabel lblFindSSID = new JLabel("Find Employee SSID:"); lblFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindSSID.setBounds(10, 208, 105, 14); frmTheBosssSecretary.getContentPane().add(lblFindSSID); JLabel lblFindPay = new JLabel("Find Employee Address:"); lblFindPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindPay.setBounds(10, 233, 124, 14); frmTheBosssSecretary.getContentPane().add(lblFindPay); txtFolder = new JTextField(); txtFolder.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFolder.setBounds(105, 7, 314, 20); frmTheBosssSecretary.getContentPane().add(txtFolder); txtFolder.setColumns(10); txtName = new JTextField(); txtName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtName.setBounds(99, 32, 247, 20); frmTheBosssSecretary.getContentPane().add(txtName); txtName.setColumns(10); txtAddress = new JTextField(); txtAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtAddress.setBounds(109, 57, 237, 20); frmTheBosssSecretary.getContentPane().add(txtAddress); txtAddress.setColumns(10); txtNumber = new JTextField(); txtNumber.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtNumber.setBounds(141, 82, 160, 20); frmTheBosssSecretary.getContentPane().add(txtNumber); txtNumber.setColumns(10); txtPay = new JTextField(); txtPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtPay.setBounds(116, 107, 105, 20); frmTheBosssSecretary.getContentPane().add(txtPay); txtPay.setColumns(10); txtSSID = new JTextField(); txtSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtSSID.setBounds(97, 132, 124, 20); frmTheBosssSecretary.getContentPane().add(txtSSID); txtSSID.setColumns(10); txtFindName = new JTextField(); txtFindName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindName.setBounds(122, 180, 314, 20); frmTheBosssSecretary.getContentPane().add(txtFindName); txtFindName.setColumns(10); txtFindSSID = new JTextField(); txtFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindSSID.setBounds(122, 205, 122, 20); frmTheBosssSecretary.getContentPane().add(txtFindSSID); txtFindSSID.setColumns(10); txtFindPay = new JTextField(); txtFindPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindPay.setBounds(141, 230, 237, 20); frmTheBosssSecretary.getContentPane().add(txtFindPay); txtFindPay.setColumns(10); JButton btnAddEmployee = new JButton("Add Employee"); btnAddEmployee.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { try { String name = txtName.getText(); String address = txtAddress.getText(); double pay = Double.parseDouble(txtPay.getText()); long ssid = Long.parseLong(txtSSID.getText()); long number = Long.parseLong(txtNumber.getText()); FinalProjectGroup1 ee = new FinalProjectGroup1(name, address, pay, ssid, number); FileWriter writer = new FileWriter(txtFolder.getText(), true); PrintWriter pw = new PrintWriter(writer); pw.println(ee.getName() + ", " + ee.getAddress() + ", " + ee.getNumber() + ", " + ee.getPay() + ", " + ee.getSSID()); pw.close(); } catch (Exception e) { return; } } }); JButton btnFolder = new JButton("Folder"); btnFolder.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { JFileChooser bsearch = new JFileChooser(); int result = bsearch.showOpenDialog(null); if (result != JFileChooser.APPROVE_OPTION) return; txtFolder.setText(bsearch.getSelectedFile().getAbsolutePath()); } }); btnFolder.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFolder.setBounds(429, 6, 75, 23); frmTheBosssSecretary.getContentPane().add(btnFolder); btnAddEmployee.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnAddEmployee.setBounds(356, 42, 159, 107); frmTheBosssSecretary.getContentPane().add(btnAddEmployee); JButton btnFindName = new JButton("Find"); btnFindName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindName.setBounds(446, 179, 69, 23); frmTheBosssSecretary.getContentPane().add(btnFindName); JButton btnFindSSID = new JButton("Find"); btnFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindSSID.setBounds(250, 204, 85, 23); frmTheBosssSecretary.getContentPane().add(btnFindSSID); JButton btnFindAddress = new JButton("Find"); btnFindAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindAddress.setBounds(389, 229, 85, 23); frmTheBosssSecretary.getContentPane().add(btnFindAddress); } } The problem here lies in the JButton Add Employee. Where, as previously mentioned, the long's phone number and social security I.D. don't show the spaces in the text file.

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  • Object created in Interface Builder getting dealloc'ed too soon

    - by Collin Allen
    The Project I'm working on a relatively simple iPhone OS project that's navigation controller based, with a root table view and a detail table view. Tap an item in the main list to see its details in a pushed table view. The Setup I broke out the data source for both views into their own objects so as not to muddy the purpose of a view controller. Having done this, the table views no longer have data sources since those methods are now in separate files, so I created an instance of each data source class in the appropriate XIB files with the Object item (dragged it in, then set its class). Then, to actually connect the tableviews to their data sources, I set the dataSource outlet of each tableview to the yellow data source object in Interface Builder. The table view delegates are still set to their view controllers. The Problem The root table view works just fine, but when you tap a row to push to the detail view, the data source object gets instantiated as expected, then immediately dealloc'ed, causing a crash (numberOfSectionsInTableView: gets called on the freed object). I can't figure out why the data source is getting automatically dealloc-ed when I need it right then and there for the detail view, as indicated by my data source object creation and tableview connection in Interface Builder. What's more perplexing is that the very approach works fine for the root tableview! The Question Is there anything obvious I'm missing that would cause this to happen? Or, is this even the right way to instantiate a data source for a table view controller? It seems like poor object oriented programming to do it from within the view controller, which should only be concerned with the view. I could cram everything in two table view controller classes and it would probably work, but it would not be as modular as I'd like. Thanks!

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  • How to serialize a collection of base type and see the concrete types in easy to read XML

    - by Jason Coyne
    I have a List which is populated with objects of various concrete types which subclass BaseType I am using the WCF DataContractSerializer <Children> <BaseType xmlns:d3p1="http://schemas.datacontract.org/2004/07/Tasks" i:type="d3p1:ConcreteTypeA"></BaseType> <BaseType xmlns:d3p1="http://schemas.datacontract.org/2004/07/Tasks" i:type="d3p1:ConcreteTypeB"></BaseType> </Children> Is there any way to get this to generate <Children> <ConcreteTypeA/> <ConcreteTypeB/> </Children> ? The real goal is to let users generate some XML to load into memory, and the users are of a skill level that asking them for the original XML is not going to be successful.

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  • javascript table sorting/paging (client-side). How big is too big?

    - by Aheho
    I'm using a jQuery plugin called Tablesorter to do client-side sorting of a log table in one of my applications. I am also making use of the tablepager add-in. I really like the responsiveness that client-side sorting and paging brings to the party. I also like how you don't have to hit the web server or database repeatedly. However I can see that, in time, the log I'm displaying could grow quite large. I'm sure there comes a point where client-side paging and sorting is going to be impractical. What point will this technique begin to collapse under it's own weight? 500 records? 2000 records? 10,000 records? EDIT: In nutshell, what criteria would you use to determine if you are going to use client-side sorting/paging as opposed to server-side paging? Does the size of expected result set factor into your decision? Where is the tipping point?

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  • SQL Full-Text indexing not populating

    - by Sam
    We installed a clustered SQL 2005 installation on windows 2008 and reattached our san drives from another machine and restored to do a migration to new hardware. There have been a few minor issues, but this one has me stuck. Trying to populate Full-Text indexes is not working. I create a basic table with some simple text in a new database and get the same results as old indexes. 2010-09-27 10:30:46.85 spid19s Informational: Full-text Full population initialized for table or indexed view '[SQL_DBA].[dbo].[CIS_Report_Executions]' (table or indexed view ID '1767677345', database ID '5'). Population sub-tasks: 1. 2010-09-27 10:31:15.36 spid19s Error '0x80070003' occurred during full-text index population for table or indexed view '[SQL_DBA].[dbo].[CIS_Report_Executions]' (table or indexed view ID '1767677345', database ID '5'), full-text key value 0x000001DF. Attempt will be made to reindex it. 2010-09-27 10:31:15.37 spid19s The component 'MSFTE.DLL' reported error while indexing. Component path 'D:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\MSFTE.DLL'. 2010-09-27 10:31:15.37 spid19s Error '0x80070003' occurred during full-text index population for table or indexed view '[SQL_DBA].[dbo].[CIS_Report_Executions]' (table or indexed view ID '1767677345', database ID '5'), full-text key value 0x000001E0. Attempt will be made to reindex it. The rebuild/repopulate procedure finishes, but I get zero rows in the index. The .dll in the message is present and the service accounts have access to this. My FTData also has data in it, so it seems there wouldn't be permission issue on this folder. Application throws this error: “PHP Warning: mssql_query() [function.mssql-query]: message: Full-text catalog 'ikm_PageIndex_FText' is in an unusable state. Drop and re-create this full-text catalog. (severity 16) in E:\Inetpub\knowledgebase_insidemesa\lib\database\mssql.php on line 154” A microsoft discussion is the only post I found which had claimed to fix this - said it was registry related, but then didn't post the fix.

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  • beautifulsoup: find the n-th element's sibling

    - by deostroll
    I have a complex html DOM tree of the following nature: <table> ... <tr> <td> ... </td> <td> <table> <tr> <td> <!-- inner most table --> <table> ... </table> <h2>This is hell!</h2> <td> </tr> </table> </td> </tr> </table> I have some logic to find out the inner most table. But after having found it, I need to get the next sibling element (h2). Is there anyway you can do this?

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  • Debugging apache seg fault with gdb

    - by Joyce Babu
    Apache on a production server of mine is seg faulting intermittently. I have enabled core dump option in apache configuration and have several dumped core files. Unfortunately, since it is a production server, apache or the loaded modules are not compiled with debug symbols. From what I understand, gdb cannot do much without debug symbols. Can I at least find out which module is causing the seg fault, without debug symbols? If so, how? Following is the output from a gdb backtrace (gdb) bt full #0 0xb7f1f832 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2 No symbol table info available. #1 0xb7be82bc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 No symbol table info available. #2 0xb771652a in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #3 0xb75df576 in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #4 0xb7715c20 in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #5 0xb7be4a49 in start_thread () from /lib/libpthread.so.0 No symbol table info available. #6 0xb7b2a63e in clone () from /lib/libc.so.6 No symbol table info available. Does this mean that /lib/ld-linux.so.2 is causing the seg fault?

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  • How to Read some of the properties of the ItemSource when Laying out the Children?

    - by user275561
    Assume that I have the ItemSource bound and i am getting the data. Now what I want is this. The ItemSource will contain Data that tells where each button should be. For Example: The first Button could be at Left:200,Top:0, the Second could be Left:50 Top:20. </ItemsControl.Resources> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <Controls:MatrixCanvas /> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <item:CustomButton Height="{Binding btnSize}" Width="{Binding btnSize}" Style="{Binding bbColor,Converter={StaticResource ButtonStyleConverter}}" /> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> protected override Size ArrangeOverride(Size finalSize) { foreach (var child in Children) { //The child } return base.ArrangeOverride(finalSize); } The Child however is not giving me access to the Item that I want. Is their a good solution for this? Am I going about this the wrong way? The reason I am doing it like this is because their can be buttons added dynamically, removed, some buttons will need to move around etc..

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  • How to make a Table of Content auto-update?

    - by Dan
    I am using Word 2007, but saving my documents in .doc (as opposed to .docx) formats because that's company policy. I have the ToC set up fine, but is there a way to have it update automatically (at document open, save or otherwise)? Word help suggests that it should update upon opening the document, but that doesn't seem to happen. Any ideas?

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  • How do you read from a file into an array of struct?

    - by Thomas.Winsnes
    I'm currently working on an assignment and this have had me stuck for hours. Can someone please help me point out why this isn't working for me? struct book { char title[25]; char author[50]; char subject[20]; int callNumber; char publisher[250]; char publishDate[11]; char location[20]; char status[11]; char type[12]; int circulationPeriod; int costOfBook; }; void PrintBookList(struct book **bookList) { int i; for(i = 0; i < sizeof(bookList); i++) { struct book newBook = *bookList[i]; printf("%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d\n",newBook.title, newBook.author, newBook.subject, newBook.callNumber,newBook.publisher, newBook.publishDate, newBook.location, newBook.status, newBook.type,newBook.circulationPeriod, newBook.costOfBook); } } void GetBookList(struct book** bookList) { FILE* file = fopen("book.txt", "r"); struct book newBook[1024]; int i = 0; while(fscanf(file, "%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d", &newBook[i].title, &newBook[i].author, &newBook[i].subject, &newBook[i].callNumber,&newBook[i].publisher, &newBook[i].publishDate, &newBook[i].location, &newBook[i].status, &newBook[i].type,&newBook[i].circulationPeriod, &newBook[i].costOfBook) != EOF) { bookList[i] = &newBook[i]; i++; } /*while(fscanf(file, "%s;%s;%s;%d;%s;%s;%s;%s;%s;%d;%d", &bookList[i].title, &bookList[i].author, &bookList[i].subject, &bookList[i].callNumber, &bookList[i].publisher, &bookList[i].publishDate, &bookList[i].location, &bookList[i].status, &bookList[i].type, &bookList[i].circulationPeriod, &bookList[i].costOfBook) != EOF) { i++; }*/ PrintBookList(bookList); fclose(file); } int main() { struct book *bookList[1024]; GetBookList(bookList); } I get no errors or warnings on compile it should print the content of the file, just like it is in the file. Like this: OperatingSystems Internals and Design principles;William.S;IT;741012759;Upper Saddle River;2009;QA7676063;Available;circulation;3;11200 Communication skills handbook;Summers.J;Accounting;771239216;Milton;2010;BF637C451;Available;circulation;3;7900 Business marketing management:B2B;Hutt.D;Management;741912319;Mason;2010;HF5415131;Available;circulation;3;1053 Patient education rehabilitation;Dreeben.O;Education;745121511;Sudbury;2010;CF5671A98;Available;reference;0;6895 Tomorrow's technology and you;Beekman.G;Science;764102174;Upper Saddle River;2009;QA76B41;Out;reserved;1;7825 Property & security: selected essay;Cathy.S;Law;750131231;Rozelle;2010;D4A3C56;Available;reference;0;20075 Introducing communication theory;Richard.W;IT;714789013;McGraw-Hill;2010;Q360W47;Available;circulation;3;12150 Maths for computing and information technology;Giannasi.F;Mathematics;729890537;Longman;Scientific;1995;QA769M35G;Available;reference;0;13500 Labor economics;George.J;Economics;715784761;McGraw-Hill;2010;HD4901B67;Available;circulation;3;7585 Human physiology:from cells to systems;Sherwood.L;Physiology;707558936;Cengage Learning;2010;QP345S32;Out;circulation;3;11135 bobs;thomas;IT;701000000;UC;1006;QA7548;Available;Circulation;7;5050 but when I run it, it outputs this: OperatingSystems;;;0;;;;;;0;0 Internals;;;0;;;;;;0;0 and;;;0;;;;;;0;0 Design;;;0;;;;;;0;0 principles;William.S;IT;741012759;Upper;41012759;Upper;;0;;;;;;0;0 Saddle;;;0;;;;;;0;0 River;2009;QA7676063;Available;circulation;3;11200;lable;circulation;3;11200;;0;;;;;;0;0 Communication;;;0;;;;;;0;0 Thanks in advance, you're a life saver

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  • NSFetchedResultsController: changing predicate not working?

    - by icerelic
    Hi, I'm writing an app with two tables on one screen. The left table is a list of folders and the right table shows a list of files. When tapped on a row on the left, the right table will display the files belonging to that folder. I'm using Core Data for storage. When the selection of folder changes, the fetch predicate of the right table's NSFetchedResultsController will change and perform a new fetch, then reload the table data. I used the following code snippet: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"list = %@",self.list]; [fetchedResultsController.fetchRequest setPredicate:predicate]; NSError *error = nil; if (![[self fetchedResultsController] performFetch:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } [table reloadData]; However the fetch results are still the same. I've NSLog'ed "predicate" before and after the fetch, and they were correct with updated information. The fetch results stay the same as initial fetch (when view is loaded). I'm not very familiar with the way Core Data fetches objects (is there a caching system?), but I've done similar things before(changing predicates, re-fetching data, and refreshing table) with single table views and everything went well. If someone could gave me a hint I would be very appreciated. Thanks in advance.

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  • SQL Server: Clutering by timestamp; pros/cons

    - by Ian Boyd
    i have a table in SQL Server, where i want inserts to be added to the end of the table (as opposed to a clustering key that would cause them to be inserted in the middle). This means i want the table clustered by some column that will constantly increase. This could be achieved by clustering on a datetime column: CREATE TABLE Things ( ... CreatedDate datetime DEFAULT getdate(), [timestamp] timestamp, CONSTRAINT [IX_Things] UNIQUE CLUSTERED (CreatedDate) ) But i can't guaranteed that two Things won't have the same time. So my requirements can't really be achieved by a datetime column. i could add a dummy identity int column, and cluster on that: CREATE TABLE Things ( ... RowID int IDENTITY(1,1), [timestamp] timestamp, CONSTRAINT [IX_Things] UNIQUE CLUSTERED (RowID) ) But you'll notice that my table already constains a timestamp column; a column which is guaranteed to be a monotonically increasing. This is exactly the characteristic i want for a candidate cluster key. So i cluster the table on the rowversion (aka timestamp) column: CREATE TABLE Things ( ... [timestamp] timestamp, CONSTRAINT [IX_Things] UNIQUE CLUSTERED (timestamp) ) Rather than adding a dummy identity int column (RowID) to ensure an order, i use what i already have. What i'm looking for are thoughts of why this is a bad idea; and what other ideas are better. Note: Community wiki, since the answers are subjective.

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  • How to exclude read only fields using :input in jquery?

    - by melaos
    hi guys, thus far i've only been using some basic jquery selectors and functions. but i'm looking at this clear form function and i can't figure out how to add it so i can remove hidden inputs and readonly input from getting cleared. can anybody help? thanks. function clearForm(form) { // iterate over all of the inputs for the form // element that was passed in $(':input', form).each(function() { var type = this.type; var tag = this.tagName.toLowerCase(); // normalize case // it's ok to reset the value attr of text inputs, // password inputs, and textareas if (type == 'text' || type == 'password' || tag == 'textarea') this.value = ""; // checkboxes and radios need to have their checked state cleared // but should *not* have their 'value' changed else if (type == 'checkbox' || type == 'radio') this.checked = false; // select elements need to have their 'selectedIndex' property set to -1 // (this works for both single and multiple select elements) else if (tag == 'select') this.selectedIndex = -1; }); };

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  • Which articles I've should read before starting to make my custom drawn winforms app?

    - by Dmitriy Matveev
    Hello! I'm currently developing a windows forms application with a lot of user controls. Some of them are just custom drawn buttons or panels and some of them are a compositions of these buttons and panels inside of FlowLayoutPanels and TableLayoutPanels. And the window itself is also custom drawn. I don't have much experience in winforms development, but I've made a proper decomposition of proposed design into user controls and implementation is already almost finished. I've already solved many arisen problems during development by the help of the google, msdn, SO and several dirty hacks (when nothing were helping) and still experiencing some of them. There are a lot of gaps in my knowledge base, since I don't know answers to many questions like: When I should use things like double buffer, suspended layout, suspended redraw ? What should I do with the controls which shouldn't be visible at some moment ? Common performance pitfalls (I think I've fallen in in several ones) ? So I think there should be some great articles which can give some knowledge enough to avoid most common problems and improve performance and maintainability of my application. Maybe some of you can recommend a few?

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  • Is this way the best solution to read and save images from Rss Feeds?

    - by Keyne
    Hi, I've build a "RSS Feed Reader" module to my application, and for every post with images in the content, I get the first that matches a specific size and then I save for future use as reference to the posts. When processing, everything works properly except when more then 10 images are saved at the same time (This value is variable). I got an 404 error after a while saving the images. Some images are saved, but not all of them. If I run the app in my local server, everything work as expected (using set_timeout(0) to avoid timeout errors). Currently my application is hosted at dreamhost and I'm using Zend Framework. I'm not sure if the problem is specif for Zend Framework applications, so I didn't put any tags about. I've had this problem another time with other projects hosted at dreamhost. They seems to limitate memory for operations like that. My question is: There is a better way to save images then this (maybe in background? a limited amount per operation?): require_once(APPLICATION_PATH . '/../library/simplehtmldom/simple_html_dom.php'); $TableFeeds = new Model_DbTable_Feeds(); $Feeds = $TableFeeds->fetchAll(); foreach($Feeds as $Feed) { $entries = Zend_Feed_Reader::import($Feed->link); $lastEntry = $this->getLastEntry($Feed->id); if($lastEntry) { $lastDate = new Zend_Date($lastEntry->created_at, Zend_Date::ISO_8601); } foreach ($entries as $entry) { if($lastDate) { if(strtotime($lastDate->get('y-M-d H:m:s')) >= strtotime($entry->getDateCreated()->get('y-M-d H:m:s'))) { break; } } $Category = new Model_DbTable_Categorias(); $availableCategories = $Category->getList('slug'); $categoria_id = false; foreach ($categories as $cat) { if(!empty($cat) && !$categoria_id) { $slug = Zf_Convert::slugfy($cat); if($availableCategories[$Feed->categoria_id] == $slug) { $categoria_id = $Feed->categoria_id; break; } if(in_array($slug,$availableCategories)) { $categoria_id = array_search($slug,$availableCategories); break; } } } if(!$categoria_id) { $categoria_id = $Feed->categoria_id; } // Cadastra a entrada $data = array( 'categoria_id' => $categoria_id, 'feed_id' => $Feed->id, 'titulo' => $entry->getTitle(), 'slug' => Zf_Convert::slugfy($entry->getTitle()), 'created_at' => $entry->getDateCreated()->get(Zend_Date::ISO_8601), 'link' => $entry->getLink(), 'html' => $entry->getContent(), 'tags' => $tags ); $entry_id = $this->insert($data); if($categoria_id == 2) { set_time_limit(0); $post_dom = str_get_dom($entry->getContent()); $img_tags = $post_dom->find('img'); $images = array(); foreach($img_tags as $image) { $images[] = $image->src; } if(count($images)) { $i = 0; $saved = false; while($images[$i] && !$saved) { $src = $images[$i]; $imagem = Zf_Image::create($src); $size = $imagem->getCurrentDimensions(); if($size['width'] >= 150 && $size['height'] >= 200) { $imagem->adaptiveResize(200,200); $imagem->save(PUBLIC_PATH . '/img/feeds/manchetes/' . $entry_id . '.jpg'); $saved = true; $this->update(array('imagemChamada' => 1),'id =' . $entry_id); } $i++; } } } } } }

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