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  • Is it bad OOP practice to have objects reference each other?

    - by lala
    Pardon my noobness. I'm making a game in which several characters have relationships with each other and they need to be able to interact with each other and store some relationship data regarding how they feel about each other. I have an object for each character. Is it bad for each of those character objects to have an array of all the other character objects in order to perform these interactions? Is there a better way to do this?

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  • intialization with a nibFIle failed

    - by zp26
    Hi, I have a problem. I try to initialize a variabile in a classViewController created inside a xib file. I try with the code below but when i append a object to array, these array isn't initialized. Can you help me? thanks and sorry for my english. #import <UIKit/UIKit.h> @interface AccelerometroViewController : UIViewController <UIAccelerometerDelegate, UITextFieldDelegate, UIAlertViewDelegate>{ //..... NSMutableArray *arrayPosizioni; NSMutableArray *arrayPosizioniCorrenti; NSString *nomePosizioneCorrente; } -(IBAction)salvaPosizione; //... @property (nonatomic, assign) NSMutableArray *arrayPosizioni; @property (nonatomic, assign) NSMutableArray *arrayPosizioniCorrenti; @property (nonatomic, assign) NSString *nomePosizioneCorrente; @end #import "AccelerometroViewController.h" #import "Position.h" @implementation AccelerometroViewController float actualX; float actualY; float actualZ; @synthesize arrayPosition; @synthesize arrayCurrentPosition; @synthesize nameCurrentPosition; -(id)init { self = [super init]; if (self != nil) { arrayPosition = [[NSMutableArray alloc]init]; arrayCurrentPosition = [[NSMutableArray alloc]init]; nameCurrentPosition = [NSString stringWithFormat:@"noPosition"]; actualX = 0; actualY = 0; actualZ = 0; } return self; } -(void)updateTextView:(NSString*)nomePosizione { NSString *string = [NSString stringWithFormat:@"%@", nameCurrentPosition]; textEvent.text = [textEvent.text stringByAppendingString:@"\n"]; textEvent.text = [textEvent.text stringByAppendingString:string]; } -(IBAction)savePosition{ Posizione *newPosition; newPosition = [[Position alloc]init]; if([newPosition setValue:(NSString*)fieldNomePosizione.text:(float)actualX:(float)actualY:(float)actualZ]){ //setValue is a method of Position. I'm sure that this method is correct UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Salvataggio Posizione" message:@"Posizione salvata con successo" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; [alert show]; [alert release]; [arrayPosition addObject:newPosition]; } else{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Salvataggio osizione" message:@"Errore nel salvataggio" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; [alert show]; [alert release]; } } - (void) initialise { arrayPosition = [[NSMutableArray alloc] init]; arrayCurrentPosition = [[NSMutableArray alloc] init]; nameCurrentPosition = @"noPosition"; actualX = 0; actualY = 0; actualZ = 0; } - (id)initWithNibName:(NSString *)nibName bundle:(NSBundle *)nibBundle { if (self = [super initWithNibName:nibName bundle:bundle]) { [self initialise]; } }

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  • How to Concatenate 2 C strings, without overwriting any terminating Null characters?

    - by Ben313
    Hello, I am trying to set up a list of file names for a parameter to SHFileOperation. I want to be able to concatenate a file name onto the char array, but i dont want to get rid of the terminating character. for example, I want this: C:\...\0E:\...\0F:\...\0\0 when i use strcat(), it overwrites the null, so it looks like C:\...E:\...F:\...0\ Is there any easy way to do this? or am i going to have to code a new strcat for myself?

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  • Adding a LIKE criteria to a Rails Conditions block

    - by Neil Middleton
    Consider the following code which is to be thrown at an AR find: conditions = [] conditions[:age] = params[:age] if params[:age].present? conditions[:gender] = params[:gender] if params[:gender].present? I need to add another condition which is a LIKE criteria on a 'profile' attribute. How can I do this, as obviously a LIKE is usually done via an array, not a hash key.

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  • Would this Jquery selector work?

    - by Alex
    Hi all, would the following Jquery selector get all of the 4th td elements of all the tables on the current page, and return their text as an array?: var isbn = $.makeArray($("table tr td:nth-child(4)").text());

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  • Where did the name `atoi` come from?

    - by Earlz
    Ok I've been curious about this for a while. In the C language where did they come up with the name atoi for converting a string to an integer? The only thing I can think of is Array To Integer for an acronym but that doesn't really make sense.

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  • Form filter in symfony: imposible when a field is type "date"

    - by user248959
    Hi, anyone has tried to create a symfony form filter from a class which has a field of type "date" ? When i do it, i get this error: 500 | Internal Server Error | Doctrine_Connection_Mysql_Exception SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens stack trace I think the error dependens on this command: 'SELECT b.id AS b_id, b.day AS b_day FROM birthday b WHERE b.day = ? AND b.day <= ?', array('month' = '1','day' = '2', 'year' = '2014') but i dont know how can i solve it.. Any idea? Javi

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  • [solved] call_user_func_array problems

    - by Knarf
    I have a class with this in self::$DB = new PDO("mysql:dbname=$dbname;host:=127.0.0.1" , 'root' , ''); and then this public static function __callStatic($name, $arguments) { return call_user_func_array(array('self::$DB', $name), $arguments); } How does I make it right/work?

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  • Smart coding on ActionScript 2 (importing vars from a php)

    - by DomingoSL
    Hello, i have a php who when is executed it give me a couple of vars in this format: &lVar1=DATA1&&lVar2=DATA2&&lVar3=DATA3 and soo... The problem is that i dont know the quantity of lVar the php script is gonna give in any time, so i cant figure out a smart script in AS2 to import all of them into a array to my flash. Can you help me?

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  • What does this mean in AS3?

    - by uther-lightbringer
    Hello I've started to learning AS3 from one book and found something I don't understand. Ellipse(_board[row][column]).fill = getFill(row, column); _board is two dimensional array of Ellipse type, so I just dont understand why is Ellipse(Ellipse object) used when it apparently works without it, or I haven't seen any changes when I omitted it.

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  • Binding a collection to Listbox

    - by Blub
    Hi, I basically started today with WPF, and I'm astounded by how difficult it is to do binding. I have an array of Textboxes, in an ObservableCollection, and just want to bind that in my Listbox, so that they arrange themselves vertically. I have fiddled around with this for 3 already, can you help? I'm working in a Wpf "UserControl", not a window as so many tutorials seem to rely on.

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  • C++ - 3 possible values in Variable?

    - by noryb009
    I need to store a 30 letter combination, but each letter can only be "0", "1" or "2". When I use sizeof(myString), it returns 32. I want to use this 30 letter combination to access a row of an array, so I'm wondering if it is possible to use a 3 value bool of some sort to store 1 of 3 values in.

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  • if with multiple conditions, order of execution

    - by markus
    Hi, In an if statement with multiple conditions is second executed if the outcome is clear after checking the first condition? example: if(i>0 && array[i]==0){ } If I swap the conditions a seg fault may occur for negative values of i but this way the memory debugger doesn't find a problem. Can I be sure that this works always or do have have to use nested if statements?

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  • Why PHP Error: Call to a member function set_prefix() on a non-object

    - by Rebol Tutorial
    I got this error Fatal error: Call to a member function set_prefix() on a non-object in /home/reboltutorial/reboltutorial.com/wp-settings.php on line 254 line 254 contains: $prefix = $wpdb->set_prefix($table_prefix); // set up global tables This occurs if I try to call index_wordpress() instead of calling these two lines define('WP_USE_THEMES', true); require('./wp-blog-header.php'); so this doesn't work: <?php function index_wordpress() { define('WP_USE_THEMES', true); require('./wp-blog-header.php'); } ?> <?php if(!function_exists('apache_request_headers')) { function apache_request_headers() { $headers = array(); foreach($_SERVER as $key => $value) { if(substr($key, 0, 5) == 'HTTP_') { $headers[str_replace(' ', '-', ucwords(str_replace('_', ' ', strtolower(substr($key, 5)))))] = $value; } } return $headers; } } function getCurrentPageUrl() { $pageURL = 'http'; if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";} $pageURL .= "://"; if ($_SERVER["SERVER_PORT"] != "80") { $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; } else { $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]; } return $pageURL; } $a = apache_request_headers(); $pos = strrpos($a["User-Agent"], "REBOL"); if ($pos === false) { index_wordpress(); } else { if ($_SERVER['REMOTE_ADDR'] != "69.163.203.14") { $command= './cgi-bin/index.cgi '. '"' . getCurrentPageUrl() . '"'; echo system($command); } else { index_wordpress(); } } ?> while this works: <?php if(!function_exists('apache_request_headers')) { function apache_request_headers() { $headers = array(); foreach($_SERVER as $key => $value) { if(substr($key, 0, 5) == 'HTTP_') { $headers[str_replace(' ', '-', ucwords(str_replace('_', ' ', strtolower(substr($key, 5)))))] = $value; } } return $headers; } } function getCurrentPageUrl() { $pageURL = 'http'; if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";} $pageURL .= "://"; if ($_SERVER["SERVER_PORT"] != "80") { $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; } else { $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]; } return $pageURL; } $a = apache_request_headers(); $pos = strrpos($a["User-Agent"], "REBOL"); if ($pos === false) { define('WP_USE_THEMES', true); require('./wp-blog-header.php'); } else { if ($_SERVER['REMOTE_ADDR'] != "69.163.203.14") { $command= './cgi-bin/index.cgi '. '"' . getCurrentPageUrl() . '"'; echo system($command); } else { define('WP_USE_THEMES', true); require('./wp-blog-header.php'); } } ?>

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  • Can i Use the value of a variable from within a ruby script inside ssh.exec()

    - by kamal
    If i have a # {} , like #{results}, in the snippet below: results = Array.new                                   f = open("/Users/kahmed/messages", "r")                                   f.each_line do |line|                                        results << "#{$.} #{line}" if line =~ /NFE/                                       put #{results}                                   end How can i use it in the following ssh.exec command Net::SSH.start( HOST, USER, :password = PASS ) do|ssh|                                   ssh.exec(#{results})

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  • How can I check if an object has a specific method?

    - by Ghommey
    I want to use a method of an object. Like $myObject->helloWorld(). However there are a couple of methods so I loop through an array of method names and call the method like this: my $methodName ="helloWorld"; $myObject->$methodNames; This works quite nice but some objects don't have all methods. How can I tell whether $myObject has a method called helloWorld or not?

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