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• How to renumber primary index.

  - by Kamil Mroczek

  I have got a simple MySQL table and primary index (id) is not numbered one by one (1, 31, 35, 100 etc.). I want them to be numbered like (1, 2, 3, 4). Please tell me how to do it. I would also like to point that I am aware of possible consequences of the operation, but I just want to tidy up the table.

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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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• get metadata from jpg, dng and arw raw files

  - by Daniel

  I was wondering if anyone new how to get access the metadata (the date in particular) from jpg, arw and dng files. I've recently lost the folder structure after a merge operation gone-bad and would like to rename the recovered files according to the metadata. I'm planning on creating a little C++ app to dig into each file and get the metadata. any input is appreciated. ( alternatively, if you know of an app that already does this I'd like to know :)

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• Query parameter using JS framework ?

  - by Maxim Veksler

  Hi, I seem to not be able to find implementation from the common Ajax libraries (JQuery, mootools, prototypejs...) that would allow the operation of parsing the window.location.href for request parameter. I would expect something like: $P{"param1"} == "param1_value" Am I missing something? p.s. The web does contains implementation examples for such operations

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• VB6: Slow Binary Write?

  - by Tom the Junglist

  Wondering why a particular binary write operation in VB is so slow. The function reads a Byte array from memory and dumps it into a file like this: Open Destination For Binary Access Write As #1 Dim startP, endP As Long startP = BinaryStart endP = UBound(ReadBuf) - 1 Dim i as Integer For i = startP To endP DoEvents Put #1, (i - BinaryStart) + 1, ReadBuf(i) Next Close #1 For two megabytes on a slower system, this can take up to a minute. Can anyone tell me why this is so slow?

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• If I never ever use HashSet, should I still implement GetHashCode?

  - by Dimitri C.

  I never need to store objects in a hash table. The reason is twofold: coming up with a good hash function is difficult and error prone. an AVL tree is almost always fast enough, and it merely requires a strict order predicate, which is much easier to implement. The Equals() operation on the other hand is a very frequently used function. Therefore I wonder whether it is necessary to implement GetHashCode (which I never need) when implementing the Equals function (which I often need)?

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• Easy mysql question regarding primary keys and an insert

  - by MPX

  In mysql, how do I get the primary key used for an insert operation, when it is autoincrementing. Basically, i want the new autoincremented value to be returned when the statement completes. Thanks!

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• Disable copy paste in SWT Text Component

  - by user300885

  Hi I'm using SWT Text component. Do someone know how can I prevent copy/paste operation for the Text component. Thanks Subha

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• Custom HTTP headers UIWebview

  - by kjeldGr

  I'm developing an application for iOS in Xcode 4.5 but I have a problem with a UIWebView. I want to set a header(BASE64 code) to skip a login part. When I try this, using the NPWebView project the webview always fails with an error which looks like this: Error Domain=NSURLErrorDomain Code=-999 "The operation couldn’t be completed. (NSURLErrorDomain error -999.)" UserInfo=0x6ace650 {NSErrorFailingURLKey="MY URL", NSErrorFailingURLStringKey="MY URL"} I hope someone can help me!

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• selecting next row of table view by shaking the iPhone.

  - by Viral

  Hello every one, I want to change the row selection by shaking my iphone. i.e. as soon as I shake my iphone, the next row should be selected of tableview. And according to that another operation should be perform. can any one tell???

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• jQuery and HTML visual glitches on table cell .toggle

  - by Forkrul Assail

  I have table that gets dynamically created. When using jQuery and toggle, everything works. I however get a small visual glitch - it seems the HTML sometimes get selected. How would I disable this on a faulty drag or mouse operation? Is there a difference in the DOM between text in a cell and 'not text' or buffered space in a td? Thanks in advance.

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• How Java do the string concatenation using "+"?

  - by Tom Brito

  I read about the way Java works with += operator, using StringBuilder. Is it the same with a ("a" + "b") operation?

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• Oracle: how to UPSERT (update or insert into a table?)

  - by Mark Harrison

  The UPSERT operation either updates or inserts a row in a table, depending if the table already has a row that matches the data: if table t has a row exists that has key X: update t set mystuff... where mykey=X else insert into t mystuff... Since Oracle doesn't have a specific UPSERT statement, what's the best way to do this?

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• click event on table row, except td with class="someClass"

  - by loviji

  Hello, I want to do someoperations after click on row, except td with class='someClass' $('#mainTable tr td:not([class=someClass])').unbind().live('click',function () { //some operation }); what is wrong? note: this td is not last td in table.

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• copying multiple char* into one char* variables C language

  - by iSight

  Hi, How can i copy multiple char* variables into one char* at single instance operation. say i have char* text1 = "Hello"; char* text2 = "World"; i want to copy text1, text2 and '2' and "12345" into char* text3 in single function call.

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• FTP script retain timestamp of a file after put

  - by ring bearer

  I know that FTP does not support transferring and retaining file date/time stamps Wondering if anyone has any ideas/scripts (Shell/perl) that would retain a transfered file's timestamp after a put operation?

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• Possible reasons and resolutions for time out

  - by ming yeow

  I cannot SSH into my instance - Operation timed out. What could be the reasons why, and what can I do to resolve it? Rebooting normally takes a long time to take effect, and might just makes things worst UPDATE: It is not about permissions - i can log in normally just fine. I suspect it might be because of memory issues

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• Append some HTML into the HEAD tag?

  - by Alex

  Hi! I want to add some style to head tag in html page using javascript. var h = document.getElementsByTagName('head').item(0); h.innerHTML += '<style>a{font-size:100px;}</style>'; But when I run this code in IE8 I see this error message: Could not set the innerHTML property. Invalid target element for this operation. Any ideas?

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• What to check to see if server has enough free resources?

  - by kyrisu

  The windows service I am writing will need to run some processor intensive operations once in a while (sound encoding wav - mp3) on a machine that takes part in real time voice communication (so I cannot just run them any-time). What would you check (what counters maybe) before running such operation? Can you point me to any good articles?

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• Hibernate - Knowing when hitting database vs cache

  - by Marty Pitt

  Given all the smarts around Hibernate and it's various caching strategies, how do I know if a certain operation is resulting in a physical database hit, or coming from the cache?

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• Best way to score and sum in Scala?

  - by adam77

  Is there a better way of doing this: val totalScore = set.foldLeft(0)( _ + score(_) ) or this: val totalScore = set.map(score(_)).sum I think it's quite a common operation so was expecting something sleeker like: val totalScore = set.sum( score(_) )

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• How to bypass the user confirmation in J2ME?

  - by abc

  i have a j2me application , it does the File IO operation, but every time it performs it , it asks user for permission. is there any way to bypass it? i heard that suppose if i make this application certified then i would be able to run it in max. secure mode to bypass such issues.

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• How to detect a image texture?

  - by Ole Jak

  So we have a photo like this How to detect that a red wall has a white figure painted on it and that that white figure is a texture and than how to cut that wall from the picture? I need an algorithm for performing such operation programaticly (not by hand)

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• Struts 2 + Reading values from the action

  - by Panther24

  I writing a Struts 2 application. The main operation I'm trying now is to read from the action call a List and display it in the form of a table in the JSP. I've searched the net and check out a lot of examples, but in vain. Can someone point out to a good working example?

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• IS ResultSet thread safe

  - by javatraniee

  Is ResultSet Thread safe? My question arises because in this i have used a different statement for each query i have delsared a ResultSet as an local variable but it gives me a error of Operation not allowed after ResultSet is closed. But my statements are working as i'm using the statements in insert and delete query.I have commented the ResultSet part and have not got the error !! The source code of my program can be referd to , in my earlier Question .

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