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  • MySQL regexp on Indexes

    - by Vivek
    HI, I have query having multiple regexp in where clause. The coloumns contained in the where clause have already been indexed. But the query is not using the indexes. Does MySql regexp cause use of indexes ? If not, what could be the workaround for this ?

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  • Rails - Any plugins for building a online quiz/test?

    - by ChrisWesAllen
    Hello guys, I'm trying to add some online tests to my site and before I rolled up my sleeves I was wondering if there is any ruby on rails plugin support for such a task. Essentially I'm looking for something that lets me add multiple choice questions. Performing the scoring logic would be an added bonus. Any one know of anything?

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  • Conducting Quiz

    - by Srikanth
    I want to conduct a quiz using silverlight. This quiz contains few questions and each question will have multiple choices (Radio Buttons). User should select one answer. After completing the quiz I need to display Result. Is it better to provide the questions and options in XML Document and then retrieve it into silverlight class? If yes, can anybody tell me the procedure to achieve it.

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  • Changing Image In an ImageButton After Being Clicked?

    - by BuZzZzJaY
    Creating a game in Android using multiple ImageButtons to display an image from the drawable folder and I want to change the button to a different image after the button has been clicked on. Here is the code for my image button: <ImageButton android:id="@+id/b56" android:layout_width="45px" android:layout_height="45px" android:layout_gravity="center_vertical" android:src="@drawable/black" /> I can't find anything about how to change the actual image of the button. You can change the color of the button by using the following code in the java file: b32.setBackgroundColor(0xAA00AA00);

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  • Java: thread-safe RandomAccessFile

    - by Folkert van Heusden
    Hi, After some serious googleing I found out that the RandomAccessFile-class is not thread-safe. Now I could use one semaphore to lock all reads and writes but I don't think that performs very well. In theory it should be possible to do multiple reads and one write at a time. How can I do this in Java? Is it possible at all? Thanks!

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  • Drawing many images inside UIImageView

    - by dusker
    Hi all, i'm looking for a way to draw multiple images (downloaded from a webservice) inside a single uiimageview. So it'd go like i downloaded image #1, and i'd like to draw it inside rect (0,0,100,100) then #2 at (0,100,100,100) etc. I'd like to then be able to take the entire composition and save it as an image in camera roll. thanks in advance for help greetings peter

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  • I'm new to OOP/PHP. What's the practicality of visibility and extensibility in classes?

    - by marcdev
    I'm obviously brand new to these concepts. I just don't understand why you would limit access to properties or methods. It seems that you would just write the code according to intended results. Why would you create a private method instead of simply not calling that method? Is it for iterative object creation (if I'm stating that correctly), a multiple developer situation (don't mess up other people's work), or just so you don't mess up your own work accidentally?

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  • powershell.exe tab completion - list alternatives?

    - by J Cooper
    I've never really used PowerShell before, and playing with it a bit, it looks like it uses cmd.exe's style of tab completion (fill in the first likely candidate, and then you can use tab to cycle through other alternatives). I'd much prefer the way e.g. bash works, where if there are multiple candidates, it shows a list of them. Is there an easy way to turn this on, by any chance?

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  • interactive login on cgi script

    - by raindrop18
    I am new for perl-cgi script. and my objective is to create user/pass interactive script to log and get information from multiple device at once. instead of add the user/pass credential on the script itself. since i am new if some one show me how to write the interactive part of the script. thanks much!!! here is the current code usr/local/bin/perl -wl use CGI ':standard'; use Net::Telnet::Cisco; ### set the error fields to nulls $selerror = ""; ### Input from the screen - make sure data was input if (param() and param('Switches') ne "" and (param('Mac') ne "" or param('Interface Description') ne "" or param('VLAN') ne "" )) { ### Put the input devices into an array. @devices = param('Switches'); ### format the header data print header(); print start_html(-title=>"ShowSwitches",-BGCOLOR=>'aqua'); print "\n",h1("<CENTER>Show Switches</CENTER>"); print "\n",hr(),"\n"; ### Go thru the device array. foreach(@devices) { $error_msg = ""; $TAC_login_error = ""; $open_error = ""; $retry_open_error = ""; $prompt_error = ""; $password_error = ""; ### Take input host and use to send to Telnet $host = $_; $session = Net::Telnet::Cisco->new(Errmode => 'return', Timeout => 30); ### Connect to the host $session->open(Host =>"$host", Timeout => 15); $open_error = $session->errmsg; ### Login with TACACS if host can be connected to if ($open_error eq "") { $session->login('USER', 'PASS'); $TAC_login_error = $session->errmsg; ### Login with TACACS failed - try standard login if ($TAC_login_error ne "") { ### Connect to host $session->open(Host =>"$host", Timeout => 15); $retry_open_error = $session->errmsg; ### Wait for password prompt - multiple matches - devices may have different device prompts. if ($retry_open_error eq "") { $session->waitfor(Match => '/Password:.*$/', Match => '/Enter password:.*$/', Timeout => 20); $prompt_error = $session->errmsg; if ($prompt_error eq "") { ### Input password $session->print('getmeout'); $password_error = $session->errmsg; $session->waitfor('/.*>$/'); $password_error = $session->errmsg; } } } } ### No errors, then issue "show commands". if ($open_error eq "" and ($TAC_login_error eq "" or $retry_open_error eq "") and $prompt_error eq "" and $password_error eq "") { ### Show Mac if (param('Mac')) { $cmd = 'sh mac'; @output = $session->cmd("$cmd"); $show_error = ""; $show_error = $session->errmsg; print "\n",h2($host . ' - ' . $cmd); if ($show_error ne "") { $error_msg = 'Error for show mac - ' . $show_error; print b($error_msg),(br); print hr(),"\n"; $error_msg = ''; } else { print pre(@output); print hr(),"\n"; } } ### Show Interface Description if (param('Interface Description')) { $cmd = 'sh interface description'; @output = $session->cmd("$cmd"); $show_error = ""; $show_error = $session->errmsg; print "\n",h2($host . ' - ' . $cmd); if ($show_error ne "") { $error_msg = 'Error for show mac - ' . $show_error; print b($error_msg),(br); print hr(),"\n"; $error_msg = ''; } else { print pre(@output); print hr(),"\n"; } } ### Show VLAN if (param('VLAN')) { $cmd = 'sh vlan'; @output = $session->cmd("$cmd"); $show_error = ""; $show_error = $session->errmsg; print "\n",h2($host . ' - ' . $cmd); if ($show_error ne "") { $error_msg = 'Error for show vlan - ' . $show_error; print b($error_msg),(br); print hr(),"\n"; $error_msg = ''; } else { print pre(@output); print hr(),"\n"; } } } elsif ($TAC_login_error ne "" and $password_error ne "") { $error_msg = "Error - $host " . $TAC_login_error . ' - possible incorrect TACACS or standard password parameters on device.'; } elsif ($open_error ne "") { $error_msg = "Error - $host " . $open_error . ' - cannot connect to host - is it down??'; } elsif ($prompt_error ne "") { $error_msg = "Error - $host " . $prompt_error . ' - password prompt not recognized - invalid TACACS (or user) password.'; } elsif ($password_error ne "") { $error_msg = "Error - $host " . $password_error . ' - possible incorrect user/password parameters on device.'; } if ($error_msg ne "" ) { print b($error_msg),(br); print hr(),"\n"; } print hr(),"\n"; print end_html(),"\n"; } } else { ### No Show command was selected. if (param('Submit') and param('Mac') eq "" and param('Interface Description') eq "" and param('VLAN') eq "" ) { $selerror = 'No Show Displays were selected. Try again please!!'; } elsif ### No switch was selected. (param('Submit') and param('Switches') eq "") { $selerror = 'No devices were selected. Try again please!!'; } ### This formats the initial Show Web page. print header(-Pragma='no-cache'), start_html(-title=>"Show Displays",-BGCOLOR=>'aqua'), h1("<CENTER>Show Switches</CENTER>"),hr(), start_form(), b("Select Show Commands:"), br(), br(), checkbox(-name=>'Mac'), checkbox(-name=>'Interface Description'), checkbox(-name=>'VLAN'), br(),br(),hr(),br(), b("Select One or More Devices:"), br(), br(), scrolling_list (-name => 'Switches', -default=> "NONE", -values => ['cs6a', 'cs7a', 'cs7b', 'cs8b', 'cs9a', 'c9b', 'csa' ], -multiple => 'true', -size => 7, ), p(submit('Submit'),reset('Reset')), b($selerror), end_form(),hr(), end_html(); } #

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  • Include ":" character in parameter using Apache's mod_rewrite

    - by travis
    I use something like that to pass to the parameter 'text' what follows after the domain RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?text=$1 [L,QSA] So if I have www.example.com/tralala I get $text='tralala' But I want it to be possible to have in the parameter the character ":" multiple times: www.example.com/me:you:him Can you give me a hand? If I test www.example.com/me:you:him I get the error: Forbidden You don't have permission to access /you:me:him on this server.

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  • Windows Phone 7: Existing Libraries Not Supported?

    - by Peterdk
    I was hoping it was as easy as referencing my existing libraries to use them with WP7. However, it complains about not able to load them because of .Net CF when I actually use them. Do i need to recompile them to .NET CF or something? I thought the big plus of WP7 was: leveraging your existing codebase...? How can I leverage my existing codebase if I need to strip everything out of it and maintain multiple versions?

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  • Library for parsing arguments GNU-style?

    - by Delan Azabani
    I've noticed the basic 'style' of most GNU core applications whereby arguments are: --longoption --longoption=value or --longoption value -abcdefg (multiple options) -iuwww-data (option i, u = www-data) They follow the above style. I want to avoid writing an argument parser if there's a library that does this using the above style. Is there one you know of?

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  • Django Model: many-to-many or many-to-one?

    - by knuckfubuck
    I'm just learning django and following a tutorial. I have a Link and a Bookmark. Unlike the tutorial I'm following, I would like a link to be associated with only one Bookmark, but a Bookmark can have multiple links. Is this the way to setup the model? class Link(models.Model): url = models.URLField(unique=True) bookmark = models.ForeignKey(Bookmark) class Bookmark(models.Model): title = models.CharField(maxlength=200) user = models.ForeignKey(User) links = models.ManyToManyField(Link)

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  • [Ruby on Rails] Data Structure

    - by siulamvictor
    I am building a online form, with about 20 multiple choice checkboxes. I can get the nested data with this command. raise params.to_yaml I need to store these data and call them again later. I want to sort out which user chose which specific checkbox, i.e. who chose checkbox no.2? What's the best way to store these data in database?

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  • User control javascript

    - by Prashant
    Hi, I have a generic user control which will be used twice in a page. There is a javascript asscoiated with it which also needs to be added. How can I add this to a page since the javascript will be added multiple times.

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  • innerHTML and event delegation

    - by Mark Gerrard
    Hello, I have a containing div that has multiple divs within which is updated every 25ms using innerHTML (for performance reasons). I have tried using event delegation to capture events but nothing I seem to do captures the click event. I think this may be due to the speed that the contents are getting updated. Any ideas would be very welcome. Thanks Mark

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  • customizing what files to keep under version control ? [svn]

    - by Neeraj
    Recently, I checked out a copy of a project, There were multiple source files and a manual makefile based build system. I did this svn status No output // meaning . is a working copy make // created a lot of *.o files svn status No change How come this is possible? This clearly suggests there be some wildcard way to customize the files under version control? How can I do that?s

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  • Scheduled Task: Directory cleanup using windows batch script

    - by d03boy
    I have a shared disk that I would like to clean up once per week using a scheduled task of some sort. I would like to use a batch script so that the system admins can easily modify it or reuse it on other directories when needed. The directory has files with multiple file extensions but the ones that need to be deleted end in .bkf and must be over 2 weeks old. Does anyone have a batch script solution for this windows server (not sure which version)?

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  • Drop shadow on a div container?

    - by Mike
    I have a searchbox with auto-suggest that pops a div up underneath it with multiple search string suggestions (like google). Is it possible to have drop shadow on the auto-suggest box with CSS or will I need a script of some sort? I tried a background image but the number of suggests can vary from 1 to 10 or 15. I'd prefer something that works in IE6+ and FF2+ if possible. Thanks!

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  • Design Patterns: What is a type

    - by contactmatt
    A very basic question, but after reading the "Design Patterns: Elements of reusable OO Software" book, I'm a little confused. The book states, "An object's type only refers to its interface-the set of request to which it can respond. An object can have many types, and objects of different classes can have the same type." Could someone please better explain what a Type is? I also don't understand how one object can have multiple types...unless the book is speaking of polymorphism....

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