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• C preprocessor at run time?

  - by drigoSkalWalker

  Hi guys, I want to do a Token concatenation, but I want to do this with the content of a variable, not its name. like this. #define call_function(fun, member) fun##_##number () while (i < 10 ) { call_function(fun, i); } but I give fun_number (), I want to give fun_1, fun_2, and so on... how to do it? Thanks in advance!!!

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• What web servers use `COOKIE` instead of `HTTP_COOKIE`?

  - by Smack my batch up

  In the source code of the Perl module CGI.pm, in the submodule CGI::Cookies.pm, there is the following line: $raw_cookie = $ENV{HTTP_COOKIE} || $ENV{COOKIE}; I'm interested in $ENV{COOKIE} here. Are there any web servers (obsolete or otherwise) which transmit cookie information using the COOKIE environment variable instead of the HTTP_COOKIE used by Apache? I've never seen COOKIE and other CGI libraries don't seem to support it.

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• Unsigned Integer

  - by viswanathan

  I was curious to know what would happen if i assign a negative value to an unsigned variable. The code will look somewhat like this. unsigned int nVal = 0; nVal = -5; It didnt give me any compiler error. When i ran the nVal was having strange value. Could it be that some 2's complement value gets assigned to nVal.

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• Is the memory allocated for different data types will depend on the architecture?

  - by prithviraj

  Hi all is the memory allocated for different types of variable say float, int and char is different for different architecture? Thanks in advance.

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• "out of scope" error when iterating an NSMutableArray

  - by wgpubs

  Why am I getting an "out of scope" error whenever I try to access the "url" variable in this loop? for(NSString *url in self.winnerImageURLs) { [mediaItemString appendFormat:@"{\"type\":\"image\",\"src\":\"%@\",\"href\":\"%@\"},", url, url]; } The class of very item in the "self.winnerImageURLs" NSMutableArray comes back as NSCFString so I'm not sure what the dealio is here. Any ideas on what I'm doing wrong??? Thanks

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• Saving a jpeg with PHP sent from flash

  - by kielie

  Hi guys, I am trying to take a variable sent from flash, and save it to a spot on my web server using PHP, I have NO idea how to do this, and I can't seem to find code that works anywhere on the web, any help would be greatly appreciated, thanx!

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• Python module being reloaded for each request with django and mod_wsgi

  - by Vishal

  I have a variable in init of a module which get loaded from the database and takes about 15 seconds. For django development server everything is working fine but looks like with apache2 and mod_wsgi the module is loaded with every request (taking 15 seconds). Any idea about this behavior? Update: I have enabled daemon mode in mod wsgi, looks like its not reloading the modules now! needs more testing and I will update.

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• logfile deleted on Oracle database how to re-create it?

  - by Daniel

  for my database assignment we were looking into 'database corruption' and I was asked to delete the second redo log file which I have done with the command: rm log02a.rdo this was in the $HOME/ORADATA/u03 directory. Now I started up my database using startup pfile=$PFILE nomount then I mounted it using the command alter database mount; now when I try to open it alter database open; it gives me the error: ORA-03113: end-of-file on communication channel Process ID: 22125 Session ID: 25 Serial number: 1 I am assuming this is because the second redo log file is missing. There is still log01a.rdo, but not the one I have deleted. How can I go about recovering this now so that I can open my database again? I have looked into the database created scripts, and it specified the log02a.rdo file to be size 10M and part of group 2. If I do select group#, member from v$logfile; I get: 1 /oradata/student_db/user06/ORADATA/u03/log01a.rdo 2 /oradata/student_db/user06/ORADATA/u03/log02a.rdo 3 /oradata/student_db/user06/ORADATA/u03/log03a.rdo 4 /oradata/student_db/user06/ORADATA/u03/log04a.rdo So it is part of group 2. If I try to add the log02a.rdo file again "already part of the database". If I drop group 2 and then add it again with these commands: ALTER DATABASE ADD LOGFILE GROUP 2 ('$HOME/ORADATA/u03/log02a.rdo') SIZE 10M; Nothing. Supposedly alters the database, but it still won't start up. Any ideas what I can do to re-create this and be able to open my database again?

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• Can I view a list of public variables of some Adobe Air app or web flash file from another app?

  - by Parris

  I was thinking about creating making AIM pluggin that checks pandora one (desktop) or pandora website periodically to see what is currently playing and update a user's status. I suppose the main question is there a clever way to access a "public" variable from some open Adobe Air process? I KNOW this sounds like some crazy security flaw, but it may also be a feature. I am pretty sure javascript can potentially handle it. Thanks!

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• How can I select records from two different tables in one MySQL query?

  - by Fernando

  I have first names stored in one table and last names stored in another. I know this is silly but I am trying out different things as I'm just starting with MySQL. Anyway is it possible to select the first name from one table and the last name from another in one query? And put the result inside a PHP variable?

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• Why can I not access this class member in python?

  - by Peter Smit

  I have the following code class Transcription(object): WORD = 0 PHONE = 1 STATE = 2 def __init__(self): self.transcriptions = [] def align_transcription(self,model,target=Transcription.PHONE): pass The important part here is that I would like to have a class member as default value for a variable. This however gives the following error: NameError: name 'Transcription' is not defined Why is this not possible and what is the right (pythonic) way to do something like this.

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• Why is C# statically typed?

  - by terrani

  I am a PHP web programmer who is trying to learn C#. I would like to know why C# requires me to specify the data type when creating a variable. Class classInstance = new Class(); Why do we need to know the data type before a class instance?

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• How to split line at non-printing ascii character in Python

  - by Donnied

  How can I split a line in Python at a non-printing ascii character (such as the long minus sign hex 0x97 , Octal 227)? I won't need the character itself. The information after it will be saved as a variable.

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• C#: returns array from object.

  - by jitm

  Hello, There is the next task: I need to check if input parameter (object) is array, then return array of input elements. For example I have input array like this: int [] array = {1,2,3,4}; And method private object[] GetArray(object @from) { } So, I need to check in this method that input variable is array and after return this array. For checking I use if(@from.GetType().IsArray) And how to create array from object ??? Is it possible ? Thanks.

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• Metaprogramming ActiveRecord Rails

  - by Dimitar Vouldjeff

  Hi, I have the following code in my project`s lib directory module Pasta module ClassMethods def self.has_coordinates self.send :include, InstanceMethods end end module InstanceMethods def coordinates [longitude ||= 43.0, latitude ||= 25.0] end end ActiveRecord::Base.extend ClassMethods end And it should create a class method for ActiveRecord::Base - has_coordinates - which I can "assign" to models... But I receive the error undefined local variable or method 'has_coordinates' Thanks in advance!

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• How can I prevent anyone from holding a reference to an object in C#

  - by floatingfrisbee

  I have a class like this internal class Report { public Company TargetCompany { get; private set; } .... // other stuff } I do not want any one to be able to do this Report r = GetReport(); Company c = r.TargetCompany; but instead always use r.TargetCompany when they want access to the Company variable. Is that possible? Does that even make sense?

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• C# analog for sql in operator

  - by er-v

  There is in operator in SQL SELECT * FROM MyTable WHERE id IN (1, 2, 3, 4, 5) Is there similar sintax in C#, I mean if(variable in (1, 2, 3, 4, 5)){ }

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• How do I use multiple arguments from an array to construct an execl() call in C?

  - by chucknelson

  I have a string array in C named args[] - now how can I use this list of arguments to construct a proper call to execl()? So if the array contains: {"/bin/ls","ls","-a","-l"} ...how can I eventually construct an execl() call that is: execl("/bin/ls","ls","-a","-l",NULL); I must be thinking about this wrong, as I can't find anything online, just talk about defining functions that can take a variable number of arguments.

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• CASE statement within WHERE statement

  - by niao

  Greetings, I would like to include CASE Statement inside my where statement as follows: SELECT a1.ROWGUID FROM Table1 a1 INNER JOIN Table2 a2 on a1.ROWGUID=a2.Table1ROWGUID WHERE a1.Title='title' AND (CASE WHEN @variable is not null THEN a1.ROWGUID in (SELECT * FROM #TempTable)) However, this 'CASE' statement does not work inside 'WHERE' statement. How can I do it correct?

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• Zsh command substitution

  - by Dr. Watson

  I usually work with BASH, but I'm trying to setup a cronjob from a machine and user account that is configured with zsh. When the cronjob runs, the date variable does not contain the date, just the string for the command to return the date. DATE=$(date +%Y%m%d) 55 15 * * 1-5 scp user@host:/path/to/some/file/$DATE.log /tmp I've tried using backticks rather than $() around the command, but that did not work either. Is there a special way to do command substitution in zsh?

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• Visual C++: Invalid allocation size. How to force the debugger to stop on this message?

  - by James Roth

  The MFC program I am debugging is printing this message in the "Output" window in Visual Studio 9.0: HEAP[AppName.exe]: Invalid allocation size - 99999998 (exceeded 7ffdefff) I'm pretty sure this is due to a bad "new", uninitialized variable or similar error. The question is: how do I get the debugger to stop on this message so that I can view the stack trace and solve the problem?

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• C++ getch() in perl?

  - by Karandeep Singh

  In c++, there is a functio, getch(), which returns the variable of the key you pressed - like enter would be 13. How could I do this in perl?

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• What is the best credit card processing service?

  - by JerSchneid

  We're looking to add credit card payments to our system (and it needs to be fairly custom, handling variable "per use" charges each month). We would like the integration to be simple and secure (i.e. no storing of credit card data on our system). What, in your opinion, is the best credit card processing provider to offer this kind of security and flexibility. List only one provider per answer to let the voting system do it's thing.

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• How do I use objc_getAssociatedObject/objc_getAssociatedObject inside an object?

  - by leo

  If I use objc_setAssociatedObject/objc_getAssociatedObject inside a category implementation to store a simulated instance variable in a setter method, how would I access the key in the getter method since any variables declared in the setter method would be outside the scope of the getter method?

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• MySQL command line issue - ambiguous option --s

  - by Dan

  Hi I'm getting the error below everytime I run a mysql or mysqladmin command - even mysql --help!! ambiguous option '--s' (set-variable, shutdown_timeout) (The daemon is fine) Any ideas? Thanks Daniel

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