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  • how to use append function in file

    - by sadia
    I want to write in a file but in a way that it should not delete existing data in that file rather it should append that file. Can anybody please help by giving any example related to appending a file? Thank you

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  • ruby on rails - link_to() problem

    - by Oded Harth
    Hi, I made this link in order to destroy a comment :   <%= link_to 'Destroy Comment', [comment.post, comment], :confirm => 'Are you sure?', :method => :delete %> this suppose to send to the destroy action in the comments_controller. the problem is that it searches for the 'show' action, Instead of the 'destroy' action : Unknown action The action 'show' could not be found for CommentsController Do you think you know why it does that? Thanks, Oded edit: problem solved I used 'button_to'

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  • Copying subversion commit messages

    - by Falcor
    I know this isn't the BEST practice, but every once in a while when I'm merging up a huge batch up changes with the trunk (and I know my branch is current), I will simply delete the contents of the trunk and then copy the contents of my branch up, so that I don't have to deal with resolving conflicts for an hour. The problem is that I seem to lose the entire history of commit messages for each file. My branch still has the correct history of commit messages... how can I merge them up?

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  • PHP Sessions data lost when changing directory?

    - by Ineffable
    I've got a simple login system using PHP sessions, but just recently it seems that if you visit pages not in a certain directory (/login/) you will always be flagged as not logged in, even when you are. It seems that my session data is being lost when I change directories (say, to /login/user/). I don't think I've touched the code myself since the problem appeared, is there something my web host could have done to my PHP installation that would delete the session data, and is there a workaround?

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  • Can i use a parameter multiple times in the qame query?

    - by djerry
    Hey guys, i was wondering, can a parameter be used more then once in the same query, like this : MySqlParameter oPar0 = new MySqlParameter("e164", MySqlDbType.String); oPar0.Value = user.E164; string sSQL0 = "Delete from callmone.call where (caller=?e164 or called=?e164);"; clsDatabase.ExecuteSQL(sSQL0, oPar0); Is this possible or should i write 2 parameters?

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  • Find all possible starting positions of a regular expression match in perl, including overlapping matches?

    - by jonderry
    Is there a way to find all possible start positions for a regex match in perl? For example, if your regex was "aa" and the text was "aaaa", it would return 0, 1, and 2, instead of, say 0 and 2. Obviously, you could just do something like return the first match, and then delete all characters up to and including that starting character, and perform another search, but I'm hoping for something more efficient.

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  • When/Why to use Cascading in SQL Server?

    - by Joel Coehoorn
    When setting up foreign keys in SQL Server, under what circumstances should you have it cascade on delete or update, and what is the reasoning behind it? This probably applies to other databases as well. I'm looking most of all for concrete examples of each scenario, preferably from someone who has used them successfully.

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  • ajax security ?

    - by Tony
    When I look back my codes that written earlier time, I found something terribly bad. Whenever I want to delete a record in the database, I did like this : $.post("deleteAction.do",{recordId:10}); I cannot prevent a malicious user visit my database operation url directly : deleteAction.do?recordId=10 What's the solution for this kind of problem ?

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  • Need help with text animation within UITableViewCell

    - by gdiphone
    I'm trying to implement a simple text animation in a custom UITableViewCell without having to go into editing mode which automatically brings up the delete button on the right. What I'm trying to accomplish is that when the label is updated by a button within the UITableviewcell, the text in the label is updated but with some smooth animation like sliding to the right since the updated text is prepended to the string. Any sample code would be great. thanks

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  • How can i create a context menu in c# in a datagridview

    - by lanoxx
    Hi all, I have written a datagridview with a couple of columns to store data of a product, now i want to be able to right click any row and have a context menu appear with the options delete and copy. Copy should have the same functionality as if I press Ctrl+C. Any help would be appreciated. Im using C# and WinForms. I have never done context menus before, so I would be thank full for any hint or link to further readings. Cheers

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  • Rails object based permission/authorization engine?

    - by Vlad
    Hi I want to add "Sharing documents" feature to my app, like in google documents service. As i see: User can: can list/view/create/edit/delete own documents share own document to everyone - its a public document share own document to another user with read-only access share own document to another user with read-write access view list of own documents and users to whom he gave permission to read and write view list of foreign documents view/edit foreign document with read/write permissions Please tell me, which permission/authorization solution is preffered for my task?

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  • What's does "cardinality of an relationship" mean in Core Data?

    - by dontWatchMyProfile
    From the docs: If all of a managed object's relationship delete rules are Nullify, then for that object at least there is no additional work to do (you may have to consider other objects that were at the destination of the relationship—if the inverse relationship was either mandatory or had a lower limit on cardinality, then the destination object or objects might be in an invalid state). Does someone have an example of this cardinality thing? What's this good for and what's important to know about this? (sounds very important...)

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  • UITableViewCell: Allowing Selective Deletion

    - by Aran Mulholland
    I have a table view and want to allow rearranging of all cells, however there are certain cells that i do not want to be allowed to be deleted. when the UiTableView is put into deletion mode i do not want the red '-' button to appear on the left hand side, and do not want the swipe gesture to bring up the Delete button of these cells but want it to happen for the others. Any ideas?

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  • May be an IE z-index bug?

    - by baikaishiuc
    Below is my code. when open the page in ie browser, then select the text in div, the text will be replaced by some shadow quad blank . If you delete a line z-index:0, in css class test1, the ie will perform correctly. In my project , the z-index must be set greater than zero, so I couldn't delete the line. I found a solution is to set bg_img.filter = "" when pannel.z-index greater than 0, then ie will also working good. But unfortunately, the bg_img.filter.alpha must be set, too. So how could I do? test .test1 { position:absolute; background:#ffffff; left:20px; top:20px; border:1px solid; width:198px; height:500px; filter: progid:DXImageTransform.Microsoft.Shadow(color="#999999", Direction=135, Strength=5); z-index:0; } </style> <script> function init () { var pannel = document.createElement ('div'); var bg_img = document.createElement ('div'); var head = document.createElement ('div'); pannel.setAttribute('class', 'test1'); pannel.setAttribute('className', 'test1'); bg_img.style.cssText = "position:relative;left:0px;top:0px;" + "width:198px;" + "height:500px;" + "filter:alpha(opacity=100);"; head.style.cssText = "position:absolute;" + "left:0px;" + "top:0px;" + "width:180px;" + "height:20px;"; document.body.appendChild (pannel); pannel.appendChild(bg_img); pannel.appendChild(head); head.innerHTML = "<div>yusutechasdf</div><div>innerhtml</div>" } </script>

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