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• How to calculate textarea cols with 100% width?

  - by sehwoo

  I set the width of a textarea to 100%, but now I need to know how many characters can fit in one row. I'm trying to write a javascript function to auto-grow/shrink a textarea. I'm trying to keep from using jquery since I just need this one function. My logic is to rows = textarea.value.split('\n'), iterate through rows and count += rows[i].length/textarea.cols, then count += rows.length, and finally textarea.rows = count. The only problem is that count is too large because textarea.cols is too small.

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• Detecting support for a given JavaScript event?

  - by Will

  I'm interested in using the JavaScript hashchange event to monitor changes in the URL's fragment identifier. I'm aware of Really Simple History and the jQuery plugins for this. However, I've reached the conclusion that in my particular project it's not really worth the added overhead of another JS file. What I would like to do instead is take the "progressive enhancement" route. That is, I want to test whether the hashchange event is supported by the visitor's browser, and write my code to use it if it's available, as an enhancement rather than a core feature. IE 8, Firefox 3.6, and Chrome 4.1.249 support it, and that accounts for about 20% of my site's traffic. So, uh ... is there some way to test whether a browser supports a particular event? Thanks.

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• Configure Symfony for use with Memcached

  - by Rob Wilkerson

  I have 2 Symfony applications (1 using 1.2.x, another using 1.4.x and both using Propel) that need to share some specific session information. Although I have no experience with memcached, my sense--after some reading--is that it may be able to serve as an external (FAST) repository that each app could read and write to. Unfortunately, I can't find much information about how to use it with Symfony in any capacity, much less in the quasi-cache, quasi-messaging server I'm envisioning. My questions, I suppose, are: Am I mistaken in believing that memcached be used in this manner and access by multiple systems? How can I configure Symfony to access a memcached repository? Thanks.

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• Implementing traceback on i386

  - by markelliott2000

  Hi, I am currently porting our code from an alpha (Tru64) to an i386 processor (Linux) in C. Everything has gone pretty smoothly up until I looked into porting our exception handling routine. Currently we have a parent process which spawns lots of sub processes, and when one of these sub-processes fatal's (unfielded) I have routines to catch the process. I am currently struggling to find the best method of implementing a traceback routine which can list the function addresses in the error log, currently my routine just prints the the signal which caused the exception and the exception qualifier code. Any help would be greatly received, ideally I would write error handling for all processors, however at this stage I only really care about i386, and x86_64. Thanks Mark

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• Visual Studio project build as an executable AND a DLL

  - by East of Nowhere

  In Visual Studio 2008 project properties, Application tab, I can set the Output type to Windows Application, Console Application, or Class Library. I have a project that I want to build as a stand-alone tool (console app) and be available to a couple other tools I'm working on as a class library. The VS GUI only lets me choose one or the other, and building the proj twice all the time is inconvenient. How can I set it up to build both output types in a single build job? Do I write some custom MSBuild .targets file or what?

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• having problems in running my java program..

  - by Tarun

  I'm a beginner in java so this question might seem a little stupid, my jdk and jre are installed in C:\program files, I write my program and save it in in my folder G:\start, now my program compiles without any error(the .class file is also generated), but when i run my program it says "unable to locate G:\lib\amd64\jvm.cfg", so i copy the 'lib' folder from my jdk folder and paste it in G:, again program compiles without any error, but when i run it,it gives my a new error saying "unable to locate G:\bin\server\jvm.dll",so i copy the 'bin' folder to g:, but now when i run, it gives me the same error again "unable to locate G:\bin\server\jvm.dll",where am I going wrong?

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• Regex to find a word, then extract a line containing the first occurence of a different word immedia

  - by Hinchy

  World's most convuluted title I know, an example should explain it better. I have a large txt file in the below format, though details and amount of lines will change everytime: Username: john_joe Owner: John Joe Account: CLI: Default: LGICMD: Flags: Primary days: Secondary days: No access restrictions Expiration: Pwdlifetime: Last Login: Maxjobs: Maxacctjobs: Maxdetach: Prclm: Prio: Queprio: CPU: Authorized Privileges: BYPASS Default Privileges: SYSPRV This sequence is repeated a couple of thousand times for different users. I need to find every user (ideally the entire first line of the above) that has SYSPRV under "Default Permissions". I know I could write an application to do this, I was just hoping their might be a nice regex I could use. Cheers

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• How to read a XML format file to memory in C#?

  - by Nano HE

  // .net 2.0 and vs2005 used. I find some code below. I am not sure I can extended the sample code or not? thank you. if (radioButton.Checked) { MemoryStream ms=new MemoryStream(); byte[] data=ASCIIEncoding.ASCII.GetBytes(textBox1.Text); ms.Write(data,0,data.Length); reader = new XmlTextReader(ms); //some procesing code ms.Close(); reader.Close(); } BTW, Could you please help me to do some dissection about the line below. byte[] data=ASCIIEncoding.ASCII.GetBytes(textBox1.Text);

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• dependent drop down list

  - by sushant

  i want to make a two drop down lists. the first list has static data( folder structure), so i can use an array for it,and depending on the folder or option selected in the first list, the second list shows the sub-folders in it. but the sub-folders keeps on changing, so i have to use asp fso for it. i am using the following fso code: <%@ Language=VBScript ENABLESESSIONSTATE = False% <% Dim fso, folder, files Set fso=Server.CreateObject("Scripting.FileSystemObject") Set folder=fso.GetFolder("D:\") Set files=folder.SubFolders For each folderIdx In files Response.Write("<option>" + folderIdx.Name + "</option>") Next % i dont know how to make such a dependent list. any help is really appreciated. and i am sorry for the formatting issue

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• Reading Matrices in MATLAB and assigning coordinates to the entries

  - by Michael Schofield

  Hi, I'm a bit new to MATLAB. Basically, I have a 25x25 Matrix, complete with various random entries ranging from 0 to 3. I need to write a program that reads this matrix, and assigns x-y coordinates to the entries, so that when I ask for an input of a particular x-y coordinate which has, say an entry of 3, then it will result in an error. I'm a bit overwhelmed - but I understand the general concept of what I'm supposed to be finding. I'm wondering if I should use a plot instead to help me.

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• Apache mod_rewrite replace characters in REQUEST_URI

  - by frio80

  I'm trying to write some .htaccess rules that replace certain characters in the REQUEST_URI parameter. Specifically, I want to replace the following: "<" = &lt; "" = &gt; "'" = &apos; '"' = &#x22; ")" = &#x29; "(" = &#x28; Example URL could be http://www.example.com/?<script>alert(1)</script>&q=")("<script') I've tried a whole bunch of methods with no success. Can someone point me in the right direction? Thanks.

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• C++ : Swapping template class elements of different types?

  - by metamemetics

  template< class T1, class T2 > class Pair { T1 first; T2 second; }; I'm being asked to write a swap() method so that the first element becomes the second and the second the first. I have: Pair<T2,T1> swap() { return Pair<T2,T1>(second, first); } But this returns a new object rather than swapping, where I think it needs to be a void method that changes its own data members. Is this possible to do since T1 and T2 are potentially different class types? In other words I can't simply set temp=first, first=second, second=temp because it would try to convert them to different types. I'm not sure why you would potentially want to have a template object that changes order of its types as it seems that would cause confusion but that appears to be what I'm being asked to do.

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• C - fork() and sharing memory

  - by Ben

  I need my parent and child process to both be able to read and write the same variable (of type int) so it is "global" between the two processes. I'm assuming this would use some sort of cross-process communication and have one variable on one process being updated. I did a quick google and IPC and various techniques come up but I don't know which is the most suitable for my situation. So what technique is best and could you provide a link to a noobs tutorial for it. Thanks.

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• Writing complex records to file

  - by DrSobhani

  Hi I have defined some records in my project which may be consisted of other records and also dynamic arrays of normal data types and other records , it is n example of a record type Type1=record x:integer; end; Type2=record Y:array of X; str:string; end; When I tried to save one of variables of these records type to file with blockwrite function like this : var Temp1:Type2; begin setlength(temp1.y,100); blockwrite(MyFile,Temp1,sizeOf(Temp1); it just wrote as much as the size of pure record is ,but temp1 has a dynmic arrays which is resized , Could someone please tell me how I can write a complex record to a file , I mean something like what is used in VB6 . Thanks

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• Where should I put interface?

  - by Roman

  I program a class in which I have a method which takes an callback object from an external software. At the moment Eclipse says that it does not know the type of the object I gave as argument (it is expectable since I do not specify this type, it's done by the external software). So, I think I need to write an interface for the object which I give as an argument to my method. In this respect I have two questions. Is it really so? Can I solve the mentioned problem in the mentioned way. If it is the case, where should I put this interface? In the same file where my class is? In the class? Outside of the class?

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• In OCaml, how can I create an out_channel which writes to a string/buffer instead of a file on disk

  - by Tianyi Cui

  I have a function of type in_channel -> out_channel -> unit which will output something to an out_channel. Now I'd like to get its output as a string. Creating temporary files to write and read it back seems ugly, so how can I do that? Is there any other methods to create out_channel besides Pervasives.open_out family? Actually, this function implemented a repl. What I really need is to test it programmatically, so I'd like to first wrap it to a function of type string -> string. For creating the in_channel, it seems I can use Scanf.Scanning.from_string, but I don't know how to create the out_channel parameter.

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• Will an optimizing compiler remove calls to a method whose result will be multiplied by zero?

  - by Tim R.

  Suppose you have a computationally expensive method, Compute(p), which returns some float, and another method, Falloff(p), which returns another float from zero to one. If you compute Falloff(p) * Compute(p), will Compute(p) still run when Falloff(p) returns zero? Or would you need to write a special case to prevent Compute(p) from running unnecessarily? Theoretically, an optimizing compiler could determine that omitting Compute when Falloff returns zero would have no effect on the program. However, this is kind of hard to test, since if you have Compute output some debug data to determine whether it is running, the compiler would know not to omit it because of that debug info, resulting in sort of a Schrodinger's cat situation. I know the safe solution to this problem is just to add the special case, but I'm just curious.

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• Is there kind of runtime C++ assembler library around?

  - by Anton

  Hi guys! For my small hobby project I need to emit machine code from C++ program in runtime. I have base address 0xDEADBEEF and want to write something like this: Assembler a((void*)0xDEADBEEF); a.Emit() << Push(Reg::Eax) << Push(Reg::Ebx) << Jmp(0xFEFEFEFE); Inline assembler isn't my choice because generated machine code is dependent of the program state. Does anybody know any existing library for doing this? If no, would it be a good idea to develop one from scratch and make it open source? (I mean, will anybody ever use this library if it existed?)

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• What scripting language would you use to put text over a generated image ?

  - by Younes

  I got this question from my cousin: "What will be the best way to create a similar working website just like: http://www.plakletters.nl". I have looked into the website and think that to start of with i'm gonna help my cousin write a script that loads all fonts installed on the system into a dropdownlist. This dropdownlist will post a font value back to the page and will create images with the input of a user that comes from a textbox. This images will have to be created server side, and I also want to give the users the ability (in the future) to lay their own text over an uploaded image, to see what the result will look like on their own image. I found some information about how to create images using php, I don't know if php can output a list of installed fonts from the system it's running on. What scripting language would you use to get this job done? Keep in mind i would just like to start with outputting some images based on user input using a scripting language.

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• Replace text in code with counting numbers

  - by Gpx

  Hi, due to testing and time measuring i have to write some kind of log into existing c# winforms code in Visual Studio 2010. I want to hold the changes and the work very small so my question is about replacing text in my call by counting numbers. Lets say i want to past a line like Log.WriteLine(position) many times in the code and then replace "position" with numbers starting from 1 to n in on turn. I cant use a counter in this case because of many loops i don´t get the right position. Thanks for any suggestions, Gpx

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• design function: underlying structure to store list of results for print to file

  - by forest.peterson

  is this a good approach to print a list of items to csv file with a sublist attached to each item. The gist of the function is when an item is found that does not exactly macth then a list of close matches is generated - this works now writing out one list at a time to a command window. For export to a csv file I think all the lists must be generated, stored and then written at once. Right now I use a struct to store the attributes printed, each struct is an item on the list - these structs are then added to a sorted stack and when printed they pop off into write out. Is a stack of stacks of structs a good design?

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• PHP and MySQL - Printing rows matching a column value

  - by Michael

  Hello, I need to write a PHP script that will print out results from a MySQL database. For example, say I have 9 fields. Field 1 is an auto increasing number, field two is a three digit number. I need to be able to have a script read, find the matching number (it'll be from a POST), and then display all matching three digit results, and the 7 other fields as well. I am already logged in to the database in this script. I guess I'm really at a loss of where to begin. How would one start something like this? Thank you.

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• Excel VBA: Alternate Row Color in Range

  - by Kurt

  I spent a VERY long time today looking up a method to alternate row colors within a specified range. There really isn't a lot out there and to be honest what I found just looked over-complicated. So, I decided to stop acting like a shameless 'script-kiddy' and put the below sample together: Sub AlternateRowColors() Dim lastRow as Long lastRow = Range("A1").End(xlDown).Row For Each Cell In Range("A1:A" & lastRow) ''change range accordingly If Cell.Row Mod 2 = 1 Then ''highlights row 2,4,6 etc|= 0 highlights 1,3,5 Cell.Interior.ColorIndex = 15 ''color to preference Else Cell.Interior.ColorIndex = xlNone ''color to preference End If Next Cell End Sub Now I know that works, but I was wondering if there's a simpler method? If so, please do tell because I'm very eager to learn simplification as I have a tendency to write verbose code at present. If not, then may this entry find it's way to page 1 of Google for it's search term(s), because it took me absolutely ages to find anything even remotely useful. Comments left for script-kiddies' benefit.

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• Get the size in 'px' instead of percents.

  - by Andrei Ciobanu

  Hello, I have to write a javascript function that is returning the current size (in px) of a div. Unfortunately the div has its weight specified in % instead of px. The style of the div: position: absolute; width: 100%; height: 100%; And my width returning function: function getTableWidth(tableId){ var tabWidth = document.getElementById('pt1::tabb').children[0].children[0].style.width; return tabWidth; } tabWidth is '100%'. Is it possible to return the px width instead of the % width ? NOTE: I don't have access to any html/css , as the page I am working on is generated through a complex framework. I can only embed javascript.

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• LINQ - if condition

  - by ile

  In code, the commented part is what I need to solve... Is there a way to write such query in LINQ? I need this because I will need sorting based on Status. var result = ( from contact in db.Contacts join user in db.Users on contact.CreatedByUserID equals user.UserID join deal in db.Deals on contact.ContactID equals deal.ContactID into deals orderby contact.ContactID descending select new ContactListView { ContactID = contact.ContactID, FirstName = contact.FirstName, LastName = contact.LastName, Email = contact.Email, Deals = deals.Count(), EstValue = deals.Sum(e => e.EstValue), SalesAgent = user.FirstName + " " + user.LastName, Tasks = 7, // This is critical part if(Deals == 0) Status = "Prospect"; else Status = "Client"; // End of critical part... }) .OrderBy(filterQuery.OrderBy + " " + filterQuery.OrderType) .Where(filterQuery.Status);

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