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  • Oracle Trigger to persist value

    - by Jose Jose
    I have a column that I need to be able to guarantee never gets set to anything other than "N" - I thought a trigger would be the perfect solution for this, but I can't seem to figure out how to make it so that anytime the column gets set to something other than "N" I reset it back to "N" Any pointers? EDIT: I wouldn't want to do a constraint because the application that will potentially change it to Y is outside of my control and I don't want it to be getting errors when it sets it to Y, I just want to passively set it back to N without fanfare.

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  • Any significant performance improvement by using bitwise operators instead of plain int sums in C#?

    - by tunnuz
    Hello, I started working with C# a few weeks ago and I'm now in a situation where I need to build up a "bit set" flag to handle different cases in an algorithm. I have thus two options: enum RelativePositioning { LEFT = 0, RIGHT = 1, BOTTOM = 2, TOP = 3, FRONT = 4, BACK = 5 } pos = ((eye.X < minCorner.X ? 1 : 0) << RelativePositioning.LEFT) + ((eye.X > maxCorner.X ? 1 : 0) << RelativePositioning.RIGHT) + ((eye.Y < minCorner.Y ? 1 : 0) << RelativePositioning.BOTTOM) + ((eye.Y > maxCorner.Y ? 1 : 0) << RelativePositioning.TOP) + ((eye.Z < minCorner.Z ? 1 : 0) << RelativePositioning.FRONT) + ((eye.Z > maxCorner.Z ? 1 : 0) << RelativePositioning.BACK); Or: enum RelativePositioning { LEFT = 1, RIGHT = 2, BOTTOM = 4, TOP = 8, FRONT = 16, BACK = 32 } if (eye.X < minCorner.X) { pos += RelativePositioning.LEFT; } if (eye.X > maxCorner.X) { pos += RelativePositioning.RIGHT; } if (eye.Y < minCorner.Y) { pos += RelativePositioning.BOTTOM; } if (eye.Y > maxCorner.Y) { pos += RelativePositioning.TOP; } if (eye.Z > maxCorner.Z) { pos += RelativePositioning.FRONT; } if (eye.Z < minCorner.Z) { pos += RelativePositioning.BACK; } I could have used something as ((eye.X > maxCorner.X) << 1) but C# does not allow implicit casting from bool to int and the ternary operator was similar enough. My question now is: is there any performance improvement in using the first version over the second? Thank you Tommaso

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  • Keep username in username field when incorrect password (php)

    - by Jonathan
    How do many of the websites that have logins keep the username in the username field when the password is entered incorrectly. The form's action (it is on index.php) is another php file, which if the password is incorrect uses Header() to go back to the index and passes the error to it using GET. I could use GET to pass the username back to the form but this seems messy, and I have noticed that websites like SMF forums have the username stay in the username field without a messy URL.

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  • Mutating XML in Clojure

    - by mac
    Clojures clojure.xml/parse, clojure.zip/xml-zip and clojure.contrib.zip-filter.xml/xml- are excellent tools for pulling values out of xml, but what if I want to change the xml (the result of clojure.zip/xml-zip) based on what I learn from xml- "queries" and write the result back out as xml? I would have expected that (clojure.contrib.prxml/prxml (clojure.xml/parse xml-content)) spit back xml, but that is not the case.

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  • Entity Framework without Transaction?

    - by Sue
    Is there a way to use EF without transaction? I have very simple single insert and don't want to roll-back when something goes wrong as there may be a trigger logging then raising error from the DB side which I have no control over. I just want to insert then catch any exceptions but don't want to roll-back.

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  • iPhone 3.5mm jack based application

    - by maverick
    I want to encode data via a DTMF encoder and send it back to the iPhone via the 3.5mm Jack. Is it possible to send data back into the 3.5mm jack. conventionally audio signals are sent out over the iPhone 3.5mm jack? Is there provision to deal with DTMF and 3.5mm jack based input applications in Iphone's External Accessory framework?

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  • MVC2 Strong typing breaking changes...

    - by BitFiddler
    I had the code working for: http://stackoverflow.com/questions/1930229/post-idictionary-back-to-mvc-model I recently migrated to MVC2 and now all my collections/dictionaries are coming back null. I can't seem to find any information about what has changed in the new release to cause this. Anyone know of something that might help?

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  • How to display the UIActionSheet view from above Tab Bar Controller?

    - by Madan Mohan
    Hi Guys , I need to display the action sheet above the Tab Bar controller. I mean, I would be able to see the Tab Bar controller even the action sheet view is in visible mode. So, Please suggest how to view from above the Tab Bar controller. Is it possible. secondly, How to change the back ground color of action sheet and cancel button back ground colour. Please help me Thank You, Madan Mohan.

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  • Design Patters in Rails

    - by Winston
    I remember, I have a GoF book back in college about design patterns which helped me a lot with my C and C++ programming, since my jump ship to Rails I was trying to use those design patterns I learned previously, Rails is a relatively new paradigm to me, plurals, verbs, REST, DRY.. Can you give me a recommended book for Rails that I can easily understand what I previously learned back in College. P.S. I suspect Matz knew about the GoF book, and applied it on Ruby... :-)

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  • TTNavigator doesn't use existing navigation bar (iPhone)

    - by user220770
    I am using the three20 framework in one view controller of my App. I create TTNavigator object and open a url which works fine. The problem is that TT creates it's own navigation bar and does not use the existing bar. There is no back button on the new nav bar so I cannot go back to my previous view controller. Has anybody run into this issue? Any ideas on how to fix (besides not using three20)? Thanks

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  • Directing stdout of system command in Perl to filehandle

    - by syker
    With the open command in Perl, you can use a filehandle. However I have trouble getting back the exit code with the open command in Perl. With the system command in Perl, I can get back the exit code of the program I'm running. However I want to just redirect the STDOUT to some filehandle (no stderr). Is that possible?

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  • Using TortoiseGit deleting all after a certain commit

    - by richard
    Using TortoiseGit (I'm trying to avoid command line usage) how does one delete all commits that accended from a certain commit, and "get back in the past" (example usage: continued doing something, figured I didn't like where it was going, and decided to go "back" disregarding all in between).

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  • Jquery delay on fadeout

    - by user272899
    I have this code that changes the opacity of the div on hover. $("#navigationcontainer").fadeTo("slow",0.6); $("#navigationcontainer").hover(function(){ $("#navigationcontainer").fadeTo("slow", 1.0); // This sets the opacity to 100% on hover },function(){ $("#navigationcontainer").fadeTo("slow", 0.6); // This sets the opacity back to 60% on mouseout }); I want to have a delay before setting the div back to 0.6 opacity how would i do this

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  • Getting started with Festival on iphone

    - by Moshe
    I'd like to use Festival in an iPhone app. Is this possible, considering the way Festival generates and then plays back audio files? Can I pass Festival an audio file directly from itself to play back? or is there a different way to read things? Is there another Text-to-speech engine for C/C++ to use with iphone?

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  • Programmatically go to another page with a ListView?

    - by Xaisoft
    Is there a way to find out what page a ListView item is on and to programmatically go to that page? I have a ListView with a DataPager that controls the paging. The reason for this is that, if I am on Page 2 of the ListView and I navigate away from the page, when I go back, I want to go back to the ListView page I was previously on.

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  • JqTouch - Detect trigger for animation

    - by majman
    Yet another problem I'm having w/ jqTouch... I'm trying to detect what element was clicked to trigger an animation so that I can pass parameters from the clicked item to the subsequent page. My HTML is: <div id="places"> <div class="toolbar"> <h1>Places</h1> <a class="back" href="#">Back</a> </div> <ul> <li id="1"><a href="#singleplace">Place 1</a></li> <li id="2"><a href="#singleplace">Place 2</a></li> <li id="3"><a href="#singleplace">Place 3</a></li> </ul> </div> <div id="singleplace"> <div class="toolbar"> <h1></h1> <a class="back" href="#">Back</a> </div> </div> When I click on any of the list items in #places, I'm able to slide over to #singleplace just fine, but I'm trying to detect which element was clicked so that I can pass parameters into the #singleplace div. My javascript is: var placeID; $('#places a').live('mouseup',function(){ $('#singleplace h1').html($(this).text()) placeID = $(this).parent().attr('id'); }) I've tried several alternatives to the $(el).live('event', fn()) approach including: $('#places a').live('click',fn()... $('#places a').live('mouseup',fn()... $('#places a').live('tap',fn()... $('#places a').tap(fn()... None of which seem to work. Is there a better way I could be handling this? I noticed on jqTouch's issues page, there is this: http://code.google.com/p/jqtouch/issues/detail?id=91 which may be part of the problem...

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  • 8086 programming using TASM: pc to pc communication

    - by Komal
    .model small .stack 100 .data .code mov ah,00h mov al,0e3h mov dx,00h int 14h back: nop l1: mov ah,03h mov dx,00h int 14h and ah,01h cmp ah,01h jne l1 mov ah,02h mov dx,00h int 21h mov dl,al mov ah,02h int 21h jmb back mov ah,4ch int 21h end this a pc to pc commnication receiver program.i would like to know why have we used the mov dx,00h function and what is the meaning of mov al,0e3h this ?

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  • LAN connection problem

    - by Pradi
    how to connect to different system within the lan? im getting messages back when pinged with host ip address and also for default gateway. But messages pinged to another ip address with in my lan are not comming back? please help me out.

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  • Hiding a navigation bar via scrolling (safari style)

    - by eagle
    After a page is loaded in Safari on the iPhone, when you begin scrolling down, the navigation bar is also scrolled out of view. When you scroll back up, the navigation scrolls back into view. I'm looking to implement this same behavior using a UIWebView underneath the UINavigationBar, but I'm guessing it should be possible with any UIScrollView descendant. How can this behavior be implemented?

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