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  • Google Docs not importing CSVs consistently

    - by nick
    Hey everyone, I'm trying to import some csv data into google docs spreadsheet. The data I am entering is all made up of 16 digit integers. About 90% of them are imported perfectly but 10% are rewritten automatically into scientific notation. How do I turn this feature of. I just want all the numbers kept in their standard form. Kind Regards Nick

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  • Durable power adapter for HP laptop?

    - by snitzr
    I'm on my third power adapter for my HP Pavilion dv4-1435dx in less than one year. I'm not abusing them. I used Mac laptops for 10 years (before needing to switch to a PC) without a problem. I tried a Targus universal power adapter, but it wouldn't charge my PC, it worked fine on another laptop http://www.targus.com/us/product_details.aspx?sku=APA6911US Any suggestion for a more durable and reliable power adapter?

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  • Apache consuming large memory with Apache Mobile Filter

    - by VarunGupta
    I installed and configured Apache Mobile Filter module for Apache to redirect users to mobile version of our website, depending on their user agents. I configured the module to use WURFL. But as soon as I start Apache it hogs a large amount of memory (without any in-coming web requests): Resident Memory: 300 to 400 MB Virtual Memory: 300 to 650 MB Without this module, Apache was consuming much lesser memory (4 to 10 MB). What could be the reason here?

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  • Weird Excel bar diagram behaviour

    - by Simon
    I have a very simple question. I want to have a diagram with the following table: Apple 30 40 50 Pears 200 300 400 Bananas 10 20 30 The weird thing is, when I try to draw a bar diagram the order of the bars changes. So Excel first draws the bananas, then the pears, and finally the apple bar... Is there anyway to tell Excel 2003 to keep the original order? Thank you very much

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  • question about merge algorithm

    - by davit-datuashvili
    hi i have question i know that this question is somehow nonsense but let see i have code to merge two sorted array in a one sorted array here is code in java public class Merge { public static void main(String[]args){ int a[]=new int[]{7,14,23,30,35,40}; int b[]=new int[]{5,8,9,11,50,67,81}; int c[]=new int[a.length+b.length]; int al=0; int bl=0; int cl=0; while (al<a.length && bl<b.length) if (a[al]<b[bl]) c[cl++]=a[al++]; else c[cl++]=b[bl++]; while (al<a.length) c[cl++]=a[al++]; while (bl<b.length) c[cl++]=b[bl++]; for (int j=0;j<c.length;j++){ System.out.println(c[j]); } } } question is why does not work if we write here {} brackets while (al } ?

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  • Plot smooth line with PyPlot

    - by Paul
    I've got the following simple script that plots a graph: import matplotlib.pyplot as plt import numpy as np T = np.array([6, 7, 8, 9, 10, 11, 12]) power = np.array([1.53E+03, 5.92E+02, 2.04E+02, 7.24E+01, 2.72E+01, 1.10E+01, 4.70E+00]) plt.plot(T,power) plt.show() As it is now, the line goes straight from point to point which looks ok, but could be better in my opinion. What I want is to smooth the line between the points. In Gnuplot I would have plotted with smooth cplines. Is there an easy way to do this in PyPlot? I've found some tutorials, but they all seem rather complex.

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  • In SQL / MySQL, can a Left Outer Join be used to find out the duplicates when there is no Primary ID

    - by Jian Lin
    I would like to try using Outer Join to find out duplicates in a table: If a table has Primary Index ID, then the following outer join can find out the duplicate names: mysql> select * from gifts; +--------+------------+-----------------+---------------------+ | giftID | name | filename | effectiveTime | +--------+------------+-----------------+---------------------+ | 2 | teddy bear | bear.jpg | 2010-04-24 04:36:03 | | 3 | coffee | coffee123.jpg | 2010-04-24 05:10:43 | | 6 | beer | beer_glass.png | 2010-04-24 05:18:12 | | 10 | heart | heart_shape.jpg | 2010-04-24 05:11:29 | | 11 | ice tea | icetea.jpg | 2010-04-24 05:19:53 | | 12 | cash | cash.png | 2010-04-24 05:27:44 | | 13 | chocolate | choco.jpg | 2010-04-25 04:04:31 | | 14 | coffee | latte.jpg | 2010-04-27 05:49:52 | | 15 | coffee | espresso.jpg | 2010-04-27 06:03:03 | +--------+------------+-----------------+---------------------+ 9 rows in set (0.00 sec) mysql> select * from gifts g1 LEFT JOIN (select * from gifts group by name) g2 on g1.giftID = g2.giftID where g2.giftID IS NULL; +--------+--------+--------------+---------------------+--------+------+----------+---------------+ | giftID | name | filename | effectiveTime | giftID | name | filename | effectiveTime | +--------+--------+--------------+---------------------+--------+------+----------+---------------+ | 14 | coffee | latte.jpg | 2010-04-27 05:49:52 | NULL | NULL | NULL | NULL | | 15 | coffee | espresso.jpg | 2010-04-27 06:03:03 | NULL | NULL | NULL | NULL | +--------+--------+--------------+---------------------+--------+------+----------+---------------+ 2 rows in set (0.00 sec) But what if the table doesn't have a Primary Index ID, then can an outer join still be used to find out duplicates?

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  • Expression Encoder SDK - WMA Pro Codec Issues with Windows Server 2003

    - by PortageMonkey
    I am using the Expression Encoder SDK to encode .avi and Flash files to a .wmv format suitable for Silverlight. By default, EE encodes files with audio using the the WMA PRO codec. If you are running Windows Server 2003, this is a problem as it doesn't support the WMA PRO codec and produces and error message similar to the following. Error Message: The Audio Profile settings do not match a valid system profile. Error Source: Microsoft.Expression.Encoder Error Target Site: System.String GetProfileString() I am looking for a way to change the default audio codec to something suitable for WS 2003. I am aware that although not supported natively, there is a highly invasive way to install Windows Media Player 11 and it's codecs on WS 2003 but this involves registry tinkering and other hacks not suitable for our production environments so that solution is out.

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  • Web Service gets unavailable after several concurrent calls

    - by Roman
    We are testing GoDaddy Virtual Data Center and came to a very strange issue when our web site gets unavailable. GoDaddy Support keeps saying the issue is in our web server settings, but looking at the result of our tests I doubt it. TEST ENVIRONMENT Virtual DataCenter with Windows hosted at GoDaddy.com. All servers have Windows Server 2008 R2 Datacenter, IIS 7. Server One with IP address 10.1.0.4 Server Two with IP address 10.1.0.3 Both servers are in private network not visible from outside. Port Forward with IP address 50.62.13.174. Port Forward is assigned to Server One TEST DESCRIPTION JMeter is used as a Client App to simulate 30 concurrent users sending 100 SOAP requests each. Interval between requests is 1 second. Http link used for testing: http://50.62.13.174/v2/webservices.asmx TEST ONE Test is run from a computer in our office. After JMeter starts running test, almost immediately, the link above becomes unavailable in a browser. After test completion, the link is not available in a browser for about 5 more minutes. Remote Desktop is working well, so we can connect to Server One remotely. After about 5 minutes since test completion, the link becomes available in a browser again. TEST TWO Test is run from Server Two (that is part of our virtual data center). Test works very well, no visible delays in processing. The link is available in a browser all the time. TEST THREE Test is run from Server One using localhost. The result is the same as in TEST TWO - no issues. TEST FOUR We repeated TEST ONE from other computers that we have located in different countries, all with the same result as TEST ONE. CONCLUSION As the test works well from Server Two, but does not work from outside our virtual data center, we feel there are issues with the network or its capacity. The whole behaviour looks like out requests from outside get stuck somewhere before reaching our virtual data center. Has anybody had similar issues in the past? Are there chances that something is wrong with our server settings?

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  • Gettings the `which application` output in Bash

    - by Prudnikov
    Here is my original question at StackOverflow.com This is the script I wrote #!/usr/bin/env bash GP=`/usr/bin/which git` PWD=`pwd` echo "PATH IS: ${GP}" echo "PWD IS: ${PWD}" and output is PATH IS: PWD IS: /Users/user/tmp So the question is how to get which git output? I'm running it on Mac OS X 10.6.2.

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  • Software or testing pipeline for testing multiple hard drives

    - by lions_leash
    I have a whole bunch of hard drives (maybe 10 or so) from a variety of sources that I'd like to test. If they work, I will put them in use and/or give them away. I was going to simply open up one of my machines and plug each one in, one at a time, and troubleshoot from there. Is there a way (or set of tools) that I can use to make this process easier and/or faster?

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  • For Loops in MIPS assembly

    - by John Moffitt
    I'm having problems getting my processor to simulate correctly and I think I've narrowed it down to the program I'm giving it. 1. li $R1, 0 2. li $R2, 0x100 3. li $R6, 1 4. li $R8, 0 5. li $R9, 20 6. lw $R3, 0($R1) 7. lw $R4, 4($R1) 8. add $R5, $R3, $R4 9. srlv $R5, $R5, $R6 10. sw $R5, 0($R2) 11. addi $R1, $R1, 4 12. addi $R2, $R2, 4 13. addi $R8, $R8, 1 14. slt $R7, $R8, $R9 15. bnq $R7, $zero, -9 It should iterate through the bottom portion 20 times and then exit. I'm particularly unsure about the branch instruction but I can't find anything wrong with it so : /

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  • How to check all check boxes at a click of a button

    - by LivingThing
    I am new to Swing, UI and MVC I have created a code based on MVC. Now my problem is that that in the controller part i have an actioneventlistener which listens to different button clicks. Out of all those buttons i have "select all" and "de-select all". In my view i have a table, one of the column of that table contains "check boxes". Now, when i click the "select-all" button i want to check all the check boxes and with "de-select all" i want to uncheck all of them. Below is my code which is not working. Please tell me what am i doing wrong here. Also, if someone knows a more elagent way please share. Thanks In my view public class CustomerSelectorDialogUI extends JFrame{ public CustomerSelectorDialogUI(TestApplicationUI ownerView, DummyCustomerStore dCStore, boolean modality) { //super(ownerView, modality); setTitle("[=] Customer Selection Dialog [=]"); //setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); custSelectPanel = new JPanel(); buttonPanel = new JPanel(); selectAllButton = new JButton(" Select All "); clearAllButton = new JButton(" Clear All "); applyButton = new JButton(" Apply "); cancelButton = new JButton(" Cancel "); PopulateAndShow(dCStore, Boolean.FALSE); } public void PopulateAndShow(DummyCustomerStore dCStore, Boolean select) { List data = new ArrayList(); for (Customer customer : dCStore.getAllCustomers()) { Object record[] = new Object[COLUMN_COUNT]; record[0] = (select == false) ? Boolean.FALSE : Boolean.TRUE; record[1] = Integer.toString(customer.customerId); record[2] = customer.fullName; data.add(record); } tModel = new TableModel(data); // In the above for loop accoring to user input (i.e click on check all or // uncheck all) i have tried to update the data. As it can be seen that i // have a condition for record[0]. //After the loop, here i have tried several options like validate(). repaint but to no avail customerTable = new JTable(tModel); scrollPane = new JScrollPane(customerTable); setContentPane(this.createContentPane()); setSize(480, 580); setResizable(false); setVisible(true); } private JPanel createContentPane() { custSelectPanel.setLayout(null); customerTable.setDragEnabled(false); customerTable.setFillsViewportHeight(true); scrollPane.setLocation(10, 10); scrollPane.setSize(450,450); custSelectPanel.add(scrollPane); buttonPanel.setLayout(null); buttonPanel.setLocation(10, 480); buttonPanel.setSize(450, 100); custSelectPanel.add(buttonPanel); selectAllButton.setLocation(0, 0); selectAllButton.setSize(100, 40); buttonPanel.add(selectAllButton); clearAllButton.setLocation(110, 0); clearAllButton.setSize(100, 40); buttonPanel.add(clearAllButton); applyButton.setLocation(240, 0); applyButton.setSize(100, 40); buttonPanel.add(applyButton); cancelButton.setLocation(350, 0); cancelButton.setSize(100, 40); buttonPanel.add(cancelButton); return custSelectPanel; } } Table Model private class TableModel extends AbstractTableModel { private List data; public TableModel(List data) { this.data = data; } private String[] columnNames = {"Selected ", "Customer Id ", "Customer Name " }; public int getColumnCount() { return COLUMN_COUNT; } public int getRowCount() { return data == null ? 0 : data.size(); } public String getColumnName(int col) { return columnNames[col]; } public void setValueAt(Object value, int rowIndex, int columnIndex) { getRecord(rowIndex)[columnIndex] = value; super.fireTableCellUpdated(rowIndex, columnIndex); } private Object[] getRecord(int rowIndex) { return (Object[]) data.get(rowIndex); } public Object getValueAt(int rowIndex, int columnIndex) { return getRecord(rowIndex)[columnIndex]; } public Class getColumnClass(int columnIndex) { if (data == null || data.size() == 0) { return Object.class; } Object o = getValueAt(0, columnIndex); return o == null ? Object.class : o.getClass(); } public boolean isCellEditable(int row, int col) { if (col > 0) { return false; } else { return true; } } } } A Views Action Listener class CustomerSelectorUIListener implements ActionListener{ CustomerSelectorDialogUI custSelectView; Controller controller; public CustomerSelectorUIListener (Controller controller, CustomerSelectorDialogUI custSelectView) { this.custSelectView = custSelectView; this.controller = controller; } @Override public void actionPerformed(ActionEvent e) { String actionEvent = e.getActionCommand(); else if ( actionEvent.equals( "clearAllButton" ) ) { controller.checkButtonControl(false); } else if ( actionEvent.equals( "selectAllButton" ) ) { controller.checkButtonControl(true); } } } Main Controller public class Controller implements ActionListener{ CustomerSelectorDialogUI selectUI; DummyCustomerStore store; public Controller( DummyCustomerStore store, TestApplicationUI appUI ) { this.store = store; this.appUI = appUI; appUI.ButtonListener( this ); } @Override public void actionPerformed(ActionEvent event) { String viewAction = event.getActionCommand(); if (viewAction.equals("TEST")) { selectUI = new CustomerSelectorDialogUI(appUI, store, true); selectUI.showTextActionListeners(new CustomerSelectorUIListener( this, selectUI ) ); selectUI.setVisible( true ); } } public void checkButtonControl (Boolean checkAll) { selectUI.PopulateAndShow(store, checkAll); } }

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  • I'm having problems restarting httpd server due to segfault in libapr

    - by Paul
    My httpd server has stopped working, within /var/log/messages I got the following error: May 10 08:08:30 linuxbox kernel: httpd[25353]: segfault at b7fb7991 ip 009ca63b sp bfec3d50 error 7 in libapr-0.so.0.9.12[9af000+1f000] Can anyone shed light on how to fix this, i've tried ghosting the drive, then removed apr and re-installed, but the error keeps coming up.

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  • Calling UIGetScreenImage() on manually-spawned thread prints "_NSAutoreleaseNoPool():" message to lo

    - by jtrim
    This is the body of the selector that is specified in NSThread +detachNewThreadSelector:(SEL)aSelector toTarget:(id)aTarget withObject:(id)anArgument NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; while (doIt) { if (doItForSure) { NSLog(@"checking"); doItForSure = NO; (void)gettimeofday(&start, NULL); /* do some stuff */ // the next line prints "_NSAutoreleaseNoPool():" message to the log CGImageRef screenImage = UIGetScreenImage(); /* do some other stuff */ (void)gettimeofday(&end, NULL); elapsed = ((double)(end.tv_sec) + (double)(end.tv_usec) / 1000000) - ((double)(start.tv_sec) + (double)(start.tv_usec) / 1000000); NSLog(@"Time elapsed: %e", elapsed); [pool drain]; } } [pool release]; Even with the autorelease pool present, I get this printed to the log when I call UIGetScreenImage(): 2010-05-03 11:39:04.588 ProjectName[763:5903] *** _NSAutoreleaseNoPool(): Object 0x15a2e0 of class NSCFNumber autoreleased with no pool in place - just leaking Has anyone else seen this with UIGetScreenImage() on a separate thread?

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  • Which will give more free RAM to linux?

    - by Linda Thomas
    Trying to avoid some issues so I've been trying to learn vm. in kernel tuning but still a little confused even after googling. The lower background_ratio is the sooner the flushes? the lower dirty_ratio is the less dirty ram that is kept, right vm.dirty_ratio = 20 vm.dirty_background_ratio = 1 or vm.dirty_ratio = 60 vm.dirty_background_ratio = 20 or vm.dirty_ratio = 20 vm.dirty_background_ratio = 10 or vm.dirty_ratio = 20 vm.dirty_background_ratio = 5

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  • Increase Timeout for remote sessions in Debian 5 Lenny

    - by Ash
    I always get a remote connection time out when using PuTTy and also when i send emails with attachments from a mail sever installed on Debian. I always get this error. I'm not sure if this is firewall or the new Debian 5 installation which i made. Is there any settings i need to fix after fresh install. Any inputs are highly appreciated. This error is pulling my brains out. Thanks. Error: 2011-01-10 15:21:13,454 INFO [btpool0-23://69.19.19.89/service/upload?fmt=extended] [[email protected];mid=72;ip=10.10.01.78;ua=Mozilla/5.0 (Windows;; U;; Windows NT 5.2;; en-US;; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729);] FileUploadServlet - File upload failed org.apache.commons.fileupload.FileUploadBase$IOFileUploadException: Processing of multipart/form-data request failed. timeout at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:367) at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126) at com.zimbra.cs.service.FileUploadServlet.handleMultipartUpload(FileUploadServlet.java:430) at com.zimbra.cs.service.FileUploadServlet.doPost(FileUploadServlet.java:412) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at com.zimbra.cs.servlet.ZimbraServlet.service(ZimbraServlet.java:181) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) at com.zimbra.cs.servlet.SetHeaderFilter.doFilter(SetHeaderFilter.java:79) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81) at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:132) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:218) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.handler.rewrite.RewriteHandler.handle(RewriteHandler.java:230) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.handler.DebugHandler.handle(DebugHandler.java:77) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:543) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:939) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:413) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:451) Caused by: org.mortbay.jetty.EofException: timeout at org.mortbay.jetty.HttpParser$Input.blockForContent(HttpParser.java:1172) at org.mortbay.jetty.HttpParser$Input.read(HttpParser.java:1122) at org.apache.commons.fileupload.MultipartStream$ItemInputStream.makeAvailable(MultipartStream.java:977) at org.apache.commons.fileupload.MultipartStream$ItemInputStream.read(MultipartStream.java:887) at java.io.InputStream.read(InputStream.java:85) at org.apache.commons.fileupload.util.Streams.copy(Streams.java:94) at org.apache.commons.fileupload.util.Streams.copy(Streams.java:64) at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:362) ... 33 more

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  • How do I convert CamelCase into human-readable names in Java?

    - by Frederik
    I'd like to write a method that converts CamelCase into a human-readable name. Here's the test case: public void testSplitCamelCase() { assertEquals("lowercase", splitCamelCase("lowercase")); assertEquals("Class", splitCamelCase("Class")); assertEquals("My Class", splitCamelCase("MyClass")); assertEquals("HTML", splitCamelCase("HTML")); assertEquals("PDF Loader", splitCamelCase("PDFLoader")); assertEquals("A String", splitCamelCase("AString")); assertEquals("Simple XML Parser", splitCamelCase("SimpleXMLParser")); assertEquals("GL 11 Version", splitCamelCase("GL11Version")); }

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  • In Python, urllib2 giving error

    - by pythBegin
    I tried running this, >>> urllib2.urlopen('http://tycho.usno.navy.mil/cgi-bin/timer.pl') But it is giving error like this, can anyone tell me a solution ? Traceback (most recent call last): File "<pyshell#11>", line 1, in <module> urllib2.urlopen('http://tycho.usno.navy.mil/cgi-bin/timer.pl') File "C:\Python26\lib\urllib2.py", line 126, in urlopen return _opener.open(url, data, timeout) File "C:\Python26\lib\urllib2.py", line 391, in open response = self._open(req, data) File "C:\Python26\lib\urllib2.py", line 409, in _open '_open', req) File "C:\Python26\lib\urllib2.py", line 369, in _call_chain result = func(*args) File "C:\Python26\lib\urllib2.py", line 1161, in http_open return self.do_open(httplib.HTTPConnection, req) File "C:\Python26\lib\urllib2.py", line 1136, in do_open raise URLError(err) URLError: <urlopen error [Errno 11001] getaddrinfo failed>

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  • Shell script to control user initiated processes

    - by Gnanam
    Hi, I'm not a shell script expert. I'm looking for a shell script which checks for maximum number of Java processes (MyJavaStandalone) running in the system before starting/executing the current Java process. Example: Script: /home/myfolder/script.sh script.sh contains /usr/java/jdk1.6.0/bin/java MyJavaStandalone >> $DATE.log & Here, before executing "MyJavaStandalone", if there are already 10 processes running, then this current process should not be started.

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  • allowDefinition='MachineToApplication' error when publishing from VS2010 (but only after a previous

    - by burnt_hand
    I can run my Asp.Net MVC 2 application without an issue on my local computer. Just Run / Debug. But if I have already built it, I can't publish it! I have to clean the solution and publish it again. I know this is not system critical, but it's really annoying. "One Click Publish" is not "Clean solution and then One click publish" The exact error is as follows: Error 11 It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. I suspect it's something to do with the Web.Config in the Views folder, but then why only after I build once previously. And just to note, the app works fine once published.

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  • C# Reading and Writing a Char[] to and from a Byte[] - Updated with Solution

    - by Simon G
    Hi, I have a byte array of around 10,000 bytes which is basically a blob from delphi that contains char, string, double and arrays of various types. This need to be read in and updated via C#. I've created a very basic reader that gets the byte array from the db and converts the bytes to the relevant object type when accessing the property which works fine. My problem is when I try to write to a specific char[] item, it doesn't seem to update the byte array. I've created the following extensions for reading and writing: public static class CharExtension { public static byte ToByte( this char c ) { return Convert.ToByte( c ); } public static byte ToByte( this char c, int position, byte[] blob ) { byte b = c.ToByte(); blob[position] = b; return b; } } public static class CharArrayExtension { public static byte[] ToByteArray( this char[] c ) { byte[] b = new byte[c.Length]; for ( int i = 1; i < c.Length; i++ ) { b[i] = c[i].ToByte(); } return b; } public static byte[] ToByteArray( this char[] c, int positon, int length, byte[] blob ) { byte[] b = c.ToByteArray(); Array.Copy( b, 0, blob, positon, length ); return b; } } public static class ByteExtension { public static char ToChar( this byte[] b, int position ) { return Convert.ToChar( b[position] ); } } public static class ByteArrayExtension { public static char[] ToCharArray( this byte[] b, int position, int length ) { char[] c = new char[length]; for ( int i = 0; i < length; i++ ) { c[i] = b.ToChar( position ); position += 1; } return c; } } to read and write chars and char arrays my code looks like: Byte[] _Blob; // set from a db field public char ubin { get { return _tariffBlob.ToChar( 14 ); } set { value.ToByte( 14, _Blob ); } } public char[] usercaplas { get { return _tariffBlob.ToCharArray( 2035, 10 ); } set { value.ToByteArray( 2035, 10, _Blob ); } } So to write to the objects I can do: ubin = 'C'; // this will update the byte[] usercaplas = new char[10] { 'A', 'B', etc. }; // this will update the byte[] usercaplas[3] = 'C'; // this does not update the byte[] I know the reason is that the setter property is not being called but I want to know is there a way around this using code similar to what I already have? I know a possible solution is to use a private variable called _usercaplas that I set and update as needed however as the byte array is nearly 10,000 bytes in length the class is already long and I would like a simpler approach as to reduce the overall code length and complexity. Thank Solution Here's my solution should anyone want it. If you have a better way of doing then let me know please. First I created a new class for the array: public class CharArrayList : ArrayList { char[] arr; private byte[] blob; private int length = 0; private int position = 0; public CharArrayList( byte[] blob, int position, int length ) { this.blob = blob; this.length = length; this.position = position; PopulateInternalArray(); SetArray(); } private void PopulateInternalArray() { arr = blob.ToCharArray( position, length ); } private void SetArray() { foreach ( char c in arr ) { this.Add( c ); } } private void UpdateInternalArray() { this.Clear(); SetArray(); } public char this[int i] { get { return arr[i]; } set { arr[i] = value; UpdateInternalArray(); } } } Then I created a couple of extension methods to help with converting to a byte[] public static byte[] ToByteArray( this CharArrayList c ) { byte[] b = new byte[c.Count]; for ( int i = 0; i < c.Count; i++ ) { b[i] = Convert.ToChar( c[i] ).ToByte(); } return b; } public static byte[] ToByteArray( this CharArrayList c, byte[] blob, int position, int length ) { byte[] b = c.ToByteArray(); Array.Copy( b, 0, blob, position, length ); return b; } So to read and write to the object: private CharArrayList _usercaplass; public CharArrayList usercaplas { get { if ( _usercaplass == null ) _usercaplass = new CharArrayList( _tariffBlob, 2035, 100 ); return _usercaplass; } set { _usercaplass = value; _usercaplass.ToByteArray( _tariffBlob, 2035, 100 ); } } As mentioned before its not an ideal solutions as I have to have private variables and extra code in the setter but I couldnt see a way around it.

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  • select random value from each type

    - by Joseph Mastey
    I have two tables, rating: +-----------+-----------+-------------+----------+ | rating_id | entity_id | rating_code | position | +-----------+-----------+-------------+----------+ | 1 | 1 | Quality | 0 | | 2 | 1 | Value | 0 | | 3 | 1 | Price | 0 | +-----------+-----------+-------------+----------+ And rating_option +-----------+-----------+------+-------+----------+ | option_id | rating_id | code | value | position | +-----------+-----------+------+-------+----------+ | 1 | 1 | 1 | 1 | 1 | | 2 | 1 | 2 | 2 | 2 | | 3 | 1 | 3 | 3 | 3 | | 4 | 1 | 4 | 4 | 4 | | 5 | 1 | 5 | 5 | 5 | | 6 | 2 | 1 | 1 | 1 | | 7 | 2 | 2 | 2 | 2 | | 8 | 2 | 3 | 3 | 3 | | 9 | 2 | 4 | 4 | 4 | | 10 | 2 | 5 | 5 | 5 | | 11 | 3 | 1 | 1 | 1 | | 12 | 3 | 2 | 2 | 2 | | 13 | 3 | 3 | 3 | 3 | | 14 | 3 | 4 | 4 | 4 | | 15 | 3 | 5 | 5 | 5 | +-----------+-----------+------+-------+----------+ I need a SQL query (not application level, must stay in the database) which will select a set of ratings randomly. A sample result would look like this, but would pick a random value for each rating_id on subsequent calls: +-----------+-----------+------+-------+----------+ | option_id | rating_id | code | value | position | +-----------+-----------+------+-------+----------+ | 1 | 1 | 1 | 1 | 1 | | 8 | 2 | 3 | 3 | 3 | | 15 | 3 | 5 | 5 | 5 | +-----------+-----------+------+-------+----------+ I'm totally stuck on the random part, and grouping by rating_id has been a crap shoot so far. Any MySQL ninjas want to take a stab? Thanks, Joe

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