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• Sorting an array based on its value

  - by MaxerDude

  I have an Array, Sample: $array { [0] { [something]=1; [something2]=2; } [1] { [something]=2; [something2]=4; } [2] { [something]=5; [something2]=2; } } I want to order the array based on the key something; So it will look like: $array { [0] { [something]=5; [something2]=2; } [1] { [something]=2; [something2]=4; } [2] { [something]=1; [something2]=2; } }

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• C++ Filling an 1D array to represent a n-dimensional object based on a straight line segment

  - by Ben

  I'm struggling to find a good way to put this question but here goes. I'm making a system that uses a 1D array implemented as double * parts_ = new double[some_variable];. I want to use this to hold co-ordinates for a particle system that can run in various dimensions. What I want to be able to do is write a generic fill algorithm for filling this in n-dimensions with a common increment in all direction to a variable size. Examples will serve best I think. Consider the case where the number of particles stored by the array is 4 In 1D this produces 4 elements in the array because each particle only has one co-ordinate. 1D: {0, 25, 50, 75}; In 2D this produces 8 elements in the array because each particle has two co-ordinates.. 2D: {0, 0, 0, 25, 25, 0, 25, 25} In 3D this produces 12 elements in the array because each particle now has three co-ordinates {0, 0, 0, 0, 0, 25, 0, 0, 50, ... } These examples are still not quite accurate, but they hopefully will suffice. The way I would do this normally for two dimensions: int i = 0; for(int x = 0; x < parts_size_ / dims_ / dims_ * 25; x += 25) { for(int y = 0; y < parts_size_ / dims_ / dims_ * 25; y += 25) { parts_[i] = x; parts_[i+1] = y; i+=2; // Indentation hates me today .< How can I implement this for n-dimensions where 25 can be any number? The straight line part is because it seems to me logical that a line is a somewhat regular shape in 1D, as is a square in 2D, and a cube in 3D. It seems to me that it would follow that there would be similar shapes in this family that could be implemented for 4D and higher dimensions via a similar fill pattern. This is the shape I wish to set my array to represent.

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• Generate a valid array key from an URL string in PHP

  - by John Riche

  I have a PHP array with some predefined values: $aArray = array( 0 => 'value0', 1 => 'value1' ); I need to create a function where the string input will always return the same, valid, array key so that when I call: GiveMeAKey('http://www.google.com'); // May return 0 or 1 I receive always the same key (I don't care which one) from the array. Obvisously I can't store the relationship in a database and the string passed to the GiveMeAKey method can be any URL. I wonder if there is a way of doing that ?

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• Retrieve POST data without knowing exact number of fields

  - by James

  Hi all! I'm creating an online poll from scratch which will be held in a database. I'm working on getting a system set up so someone can create a new poll. I will be having the user fill out a simple HTML form with the Questions and Answers (there may be several answers). The user will be able to add multiple questions and multiple answers for each question. As the total number of questions and answers will be decided by the user, I need to create some clever PHP to cater for this - however many there are. When dealing with a static number of questions, it's simple. But I'm having trouble thinking of a way to get all the POST data into individual PHP variables so I can process them. I was thinking of using a foreach loop, anyone got any ideas? Sorry for the long winded description! If anyone needs anything clarified, I'd be happy to do so. My problem is that I can't get my head around how to deal with the POST values when I don't know exactly which element of the array will contain what. If things were static with a set number of questions and answers, I'd know $_POST[0] was Question1, etc Thank you! =)

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• why doesnt this program print?

  - by Alex

  What I'm trying to do is to print my two-dimensional array but i'm lost. The first function is running perfect, the problem is the second or maybe the way I'm passing it to the "Print" function. #include <stdio.h> #include <stdlib.h> #define ROW 2 #define COL 2 //Memory allocation and values input void func(int **arr) { int i, j; arr = (int**)calloc(ROW,sizeof(int*)); for(i=0; i < ROW; i++) arr[i] = (int*)calloc(COL,sizeof(int)); printf("Input: \n"); for(i=0; i<ROW; i++) for(j=0; j<COL; j++) scanf_s("%d", &arr[i][j]); } //This is where the problem begins or maybe it's in the main void print(int **arr) { int i, j; for(i=0; i<ROW; i++) { for(j=0; j<COL; j++) printf("%5d", arr[i][j]); printf("\n"); } } void main() { int *arr; func(&arr); print(&arr); //maybe I'm not passing the arr right ? }

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• Array of an array (Database)

  - by Anne Mah Li'en

  I am trying to print out an array of an array from database Below are my codes. I am able to retrieve all the values from the first array. But error occurs when I am trying to retrieve the 2nd array from database. <% ArrayList<Questionnaire> allCategories =QuestionnaireController.getQuestionnaireByCategoryAll(); for(int i=0;i<allCategories.size();i++){ Questionnaire allCategoriesQuestionnaire=allCategories.get(i); out.println("<div class=\"silverheader\">" + "<a href= \"\">" + allCategoriesQuestionnaire.getCategory() + "</a>" + "</div>" + "<div class=\"submenu\">" + "ArrayList<Questionnaire> CategoriesSustainability =QuestionnaireController.getQuestionnaireByCategorySustainability();" + out.println(CategoriesSustainability.get(0).getCategory()); + "<br />" + "</div>"); } %>

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• function.array-diff problems!

  - by SKY

  Hi, im currently getting these error on my site: Warning: array_keys() [function.array-keys]: The first argument should be an array on line 43 Warning: Invalid argument supplied for foreach() on line 44 Warning: array_diff() [function.array-diff]: Argument #1 is not an array on line 47 Warning: array_diff() [function.array-diff]: Argument #1 is not an array on line 48 And the source are: 42. $tmp = $this->network->get_user_follows($this->user->id); 43. $tmp = array_keys($tmp->followers); 44. foreach($tmp as &$v) { $v = intval($v); } 45. $tmp2 = array_keys($this->network->get_group_members($g->id)); 46. foreach($tmp2 as &$v) { $v = intval($v); } 47. $tmp = array_diff($tmp, $tmp2); 48. $tmp = array_diff($tmp, array(intval($this->user->id))); I want to know what is the problem and how i fix it. Thanks!

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• How do I generate an array from a string representation of that array?

  - by question_about_the_problem

  I want to generate the array $result_array. There is no error at the page, but not works! that not works ! //BOF: Result Array $result_array = ''; $result_array .= '"messages" => "' . $errors .'",'; $result_array .= '"this_addr_type" => "' . (int)$_REQUEST['edit'] .'",'; if (ACCOUNT_GENDER == 'true') { $result_array .= '"gender_male" => "' . $male .'",'; $result_array .= '"gender_female" => "' . $female .'",'; } $result_array .= '"firstname" => "' . $entry['entry_firstname'] .'",'; $result_array .= '"lastname" => "' . $entry['entry_lastname'] .'",'; if (ACCOUNT_COMPANY == 'true') { $result_array .= '"company" => "' . $entry['entry_company'] .'",'; } $result_array .= '"street_address" => "' . $entry['entry_street_address'] .'",'; if (ACCOUNT_SUBURB == 'true') { $result_array .= '"suburb" => "' . $entry['entry_suburb'] .'",'; } $result_array .= '"postcode" => "' . $entry['entry_postcode'] .'",'; $result_array .= '"city" => "' . $entry['entry_city'] .'",'; if (ACCOUNT_STATE == 'true') { $result_array .= '"state" => "' . $entry['entry_state'] .'",'; } $result_array .= '"country" => "' . $entry['entry_country_id'] .'"'; //EOF: Result Array $_RESULT = array($result_array); that works $_RESULT = array( "this_addr_type" => (int)$_REQUEST['edit'], "gender_male" => $male, "gender_female" => $female, "firstname" => $entry["entry_firstname"], "lastname" => $entry["entry_lastname"], "company" => $entry["entry_company"], "street_address" => $entry["entry_street_address"], "suburb" => $entry["entry_suburb"], "postcode" => $entry["entry_postcode"], "city" => $entry["entry_city"], "state" => $entry["entry_state"], "country" => $entry["entry_country_id"] );

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• NSMutableArray accessing issue.

  - by Danegraphics

  I've searched and have no answer. I've created an NSMutableArray and am getting an EXC_BAD_ACCESS error in one place of access. Here. This is declaring in the .h file: NSMutableArray *buttons; ... @property (nonatomic, retain)NSMutableArray *buttons; And this is the synthesizing and implimenting: @synthesize buttons; ... - (id)init { self = [super init]; if(self != nil) { buttons = [[NSMutableArray alloc] init]; } return self; } ... -(void)addButtonWithImage:(Image*)image { Image *button = image; [buttons addObject:button]; [button release]; } ... -(void)replaceButtonAt:(int)num with:(Image*)image { Image *button = image; [buttons replaceObjectAtIndex:num withObject:button]; <<===EXC_BAD_ACCESS [button release]; } But when I use this: -(void)renderButton:(int)num atPoint:(CGPoint)point center:(BOOL)center{ Image *button = [buttons objectAtIndex:num]; [button renderAtPoint:point centerOfImage:center]; } It works

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• How to get Ponter/Reference semantics in Scala.

  - by Lukasz Lew

  In C++ I would just take a pointer (or reference) to arr[idx]. In Scala I find myself creating this class to emulate a pointer semantic. class SetTo (val arr : Array[Double], val idx : Int) { def apply (d : Double) { arr(idx) = d } } Isn't there a simpler way? Doesn't Array class have a method to return some kind of reference to a particular field?

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• Storing database records into array

  - by zerey

  I would want to create an array that will hold records retrieved from a database using a query of SELECT statement. The records to be retrieved have multiple fields such as lastname, firstname, mi and 20 more fields. What would be the best approach on coding this function? alright i have followed what prisoner have given below.. the next question is how do i search through this kind of array using queries? for example i want to search for a username..

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• Help me to break array

  - by Wazzy

  Please Help me getting only emails from this array Mentioning array not in code tags is intentional-Sorry for that array(16) { [0]=> string(273) ""guid":"","contactId":"44","contactName":"_, atri","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=atri_megrez%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"atri_megrez","msgrStatus":"","isMsgrBuddy":122}," [1]=> string(260) ""guid":"","contactId":"100","contactName":"afrin","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=fida_cuty123%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"","msgrStatus":"","isMsgrBuddy":false}," [2]=> string(258) ""guid":"","contactId":"101","contactName":"afrin","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=waliyani%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"","msgrStatus":"","isMsgrBuddy":false}," }

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• C# assign values of array to separate variables in one line

  - by Sarah Vessels

  Can I assign each value in an array to separate variables in one line in C#? Here's an example in Ruby code of what I want: irb(main):001:0> str1, str2 = ["hey", "now"] => ["hey", "now"] irb(main):002:0> str1 => "hey" irb(main):003:0> str2 => "now" I'm not sure if what I'm wanting is possible in C#. Edit: for those suggesting I just assign the strings "hey" and "now" to variables, that's not what I want. Imagine the following: irb(main):004:0> val1, val2 = get_two_values() => ["hey", "now"] irb(main):005:0> val1 => "hey" irb(main):006:0> val2 => "now" Now the fact that the method get_two_values returned strings "hey" and "now" is arbitrary. In fact it could return any two values, they don't even have to be strings.

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• Perl array and hash manipulation using map

  - by somebody

  I have the following test code use Data::Dumper; my $hash = { foo => 'bar', os => 'linux' }; my @keys = qw (foo os); my $extra = 'test'; my @final_array = (map {$hash->{$_}} @keys,$extra); print Dumper \@final_array; The output is $VAR1 = [ 'bar', 'linux', undef ]; Shouldn't the elements be "bar, linux, test"? Why is the last element undefined and how do I insert an element into @final_array? I know I can use the push function but is there a way to insert it on the same line as using the map command? Basically the manipulated array is meant to be used in an SQL command in the actual script and I want to avoid using extra variables before that and instead do something like: $sql->execute(map {$hash->{$_}} @keys,$extra);

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• Page Entirely Blank Despite Having Source Code! (TinyMCE, FireFox)

  - by Chris Cooper

  Alright guys, here's a tough one... In reference to this page. The page will seemingly randomly not display the output of server when using Firefox (version 3.5). I have not seen this problem occur in Safari or IE. The best way to have the problem occur is just reload the page about 10 times and it ought to have happened by then, and once it does - it'll continue on subsequent refreshes until you change the page. The problem is literally the browser not displaying the output (code). Viewing the source shows all the appropriate code yet the browser displays a blank white page. The web developer and firebug plugins don't show any errors that would indicate the problem. I have tested this on a separate system and OS and it occurs in Firefox on that system as well. The problem did not occur until after TinyMCE (A Rich Text Editor JavaScript library for textareas) was added to the project. TinyMCE works however, where it should. I know this is a confusing problem, but I am completely lost as to what could be causing this significant issue. Thanks in advance. EDIT: If it's any help... I've noticed that if I cause a css file error by changing a stylesheet source to something non-existant (xxx.css), the page will continuously display without a problem (besides whatever related css not showing due to the src change). I've also noticed that causing any simple javascript error with some bad code will cause the page to load properly continuously (besides of course javascript not running on the page). EDIT#2: Moving all <script> tags down at the tail of the <body> 'fixes' (well, hides) this error and the page shows normally. A band-aid.

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• Declare java enum with a String array

  - by chama

  I'm trying to declare an enum type based on data that I'm retrieving from a database. I have a method that returns a string array of all the rows in the table that I want to make into an enumerated type. Is there any way to construct an enum with an array? This is what I tried, but from the way it looked in eclipse, it seemed like this just created a method by that name: public enum ConditionCodes{ Condition.getDescriptions(); } Thank you in advance!

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• Add a method to array object

  - by Luca Romagnoli

  I've found this post: Array#add_condition But i didn't understand to how implement it in my rails project How can i do it? thanks

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• How to display records below form on submission in php without the use of database?

  - by OM The Eternity

  How to make the use of hidden variables as array for consecutive submission of data so that they can be used to display the records list. I have a form with 4 text fields and a file upload field.. as i submit he form it should get appended to the list which needs to be displayed below the form, such that these values are NOT stored in the DB.. So in this case how can i use the post array to collect the data and display in the list below?

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• Multiple value array

  - by Ant..

  I am new to jScript and have written this code [which works perfectly]. Its purpose is to test that the term for the amount of loan is not exceeded. Can the process be consolidated into one array where you pass the loan amount which returns the term based on the range i.e. 6000 to 7000 = 96 function TestMaxTerm() { var LnAmt = 14000 //Testing Purposes var Term = 0 //Testing Purposes if (LnAmt > 0 && LnAmt <= 1000){Term = 0;} if (LnAmt > 1000 && LnAmt <= 2000){Term = 1;} if (LnAmt > 2000 && LnAmt <= 3000){Term = 2;} if (LnAmt > 3000 && LnAmt <= 4000){Term = 3;} if (LnAmt > 4000 && LnAmt <= 5000){Term = 4;} if (LnAmt > 5000 && LnAmt <= 6000){Term = 5;} if (LnAmt > 6000 && LnAmt <= 7000){Term = 6;} if (LnAmt > 7000 && LnAmt <= 8000){Term = 7;} if (LnAmt > 8000 && LnAmt <= 9000){Term = 8;} if (LnAmt > 9000 && LnAmt <= 10000){Term = 9;} if (LnAmt > 10000 && LnAmt <= 11000){Term = 10;} if (LnAmt > 11000 && LnAmt <= 12000){Term = 11;} if (LnAmt > 11000){Term = 12;} //Obtain Maximum Term for Loan Amount var MaxTerm = new Array(); MaxTerm[0] = 24; MaxTerm[1]=36; MaxTerm[2] = 48; MaxTerm[3] = 60; MaxTerm[5] = 72; MaxTerm[5]=84; MaxTerm[6] = 96; MaxTerm[7] = 108; MaxTerm[8] = 120; MaxTerm[9]=132; MaxTerm[10] = 164; MaxTerm[11] = 176; MaxTerm[12] = 420; var text = MaxTerm[Term]; alert(text); }

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• iPhone: Get value in multi-dimentional array

  - by Nic Hubbard

  I have an array that is many levels deep and I am wondering what is the best way to get one of the child element values that is deep in my array. I assume I need to use a recursive method, but what is the best way to do this? Or is there a faster way to do this? The array comes from an XML Parser that I am using which builds everything into an array like this (using NSLog to show the structure): { children = ( { children = ( { children = ( { children = ( ); data = 12; element = AssetID; } ); data = ""; element = "ns1:GetUserIdByUsernameResponse"; } ); data = ""; element = "SOAP-ENV:Body"; } ); data = ""; element = "SOAP-ENV:Envelope"; } What I would like to get at is the AssetID data, which in this case is 12.

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• Can somebody please explain this recursive function for me?

  - by capncoolio

  #include <stdio.h> #include <stdlib.h> void reprint(char *a[]) { if(*a) { printf("%d ",a); reprint(a+1); printf("%s ",*a); } } int main() { char *coll[] = {"C", "Objective", "like", "don't", "I", NULL}; reprint(coll); printf("\n"); return EXIT_SUCCESS; } As the more experienced will know, this prints the array in reverse. I don't quite understand how! I need help understanding what reprint(char *a[]) does. I understand pointer arithmetic to a degree, but from inserting printf's here and there, I've determined that the function increments up to the array end, and then back down to the start, only printing on the way down. However, I do not understand how it does this; all I've managed to understand by looking at the actual code is that if *a isn't NULL, then call reprint again, at the next index. Thanks guys!

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• Parsing array data

  - by Sam

  I am trying to parse this array data that way generated from JQuery and JSON. Array ( [d] = Array ( [0] = Array ( [order] = 1 ) [1] => Array ( [order] => 2 ) [2] => Array ( [order] => 3 ) [3] => Array ( [order] => 4 ) [4] => Array ( [order] => 5 ) ) ) I am trying to save the above date into a mysql table, but cannot seem to parse the data properly to be inserted into the database. Can anyone help?

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• PHP/MySQL - an array filter for bots

  - by Mike

  Hello, I'm making a hit counter. I have a database and I store the IP and $_SERVER['HTTP_USER_AGENT']; of the visitors. Now I need to add a filter, so I can put away the hits, that are made by bots. I found out, that many bots usually keep some common words in the $_SERVER['HTTP_USER_AGENT']; , so I's like to make and array of words, that would keep the bot from displaying in the results. Here is what I have now: while($row = mysql_fetch_array($yesterday, MYSQL_ASSOC)) { <-- Here I need a code, that would run through an array and check, if it containts the keywords and if it doesn't ... just count++; -- } Also if you know any other way of detecting and removing the bots from the results, I'd be verry thankful. Cheers

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• Echo a multidimensional array in PHP

  - by Jennifer

  I have a multidimensional array and I'm trying to find out how to simply "echo" the elements of the array. The depth of the array is not known, so it could be deeply nested. In the case of the array below, the right order to echo would be: This is a parent comment This is a child comment This is the 2nd child comment This is another parent comment This is the array I was talking about: Array ( [0] => Array ( [comment_id] => 1 [comment_content] => This is a parent comment [child] => Array ( [0] => Array ( [comment_id] => 3 [comment_content] => This is a child comment [child] => Array ( [0] => Array ( [comment_id] => 4 [comment_content] => This is the 2nd child comment [child] => Array ( ) ) ) ) ) ) [1] => Array ( [comment_id] => 2 [comment_content] => This is another parent comment [child] => Array ( ) ) )

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• typedef fixed length array

  - by Rajorshi

  Hi, I have to define a 24-bit data type.I am using char[3] to represent the type. Can I typedef char[3] to type24? I tried it in a code sample. I put typedef char[3] type42; in my header file. The compiler did not complain about it. But when I defined a function void foo(type24 val) {} in my C file, it did complain. I would like to be able to define functions like type24_to_int32(type24 val) instead of type24_to_int32(char value[3]).

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