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• generic function for extracting values from an array with one particular key in PHP

  - by Sabya

  Is it possible in PHP to extract values from an array with a particular key path and return an array of those values? I'll explain with an example: $user = array ( array( id => 1, email =>'asd@example.com', project => array ('project_id' => 222, 'project_name' => 'design') ), array( id => 2, …

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• Fatal error: Cannot use string offset as an array

  - by learner

  Array ( [0] = Array ( [auth_id] = 1 [auth_section] = Client Data Base [auth_parent_id] = 0 [auth_admin] = 1 [sub] = Array ( [0] = Array ( [auth_id] = 2 …

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• Ruby: how to know depth of multidemensional array

  - by hqt

  This is my problem I have met in my assignment. Array A has two elements: array B and array C. Array B has two elements: array D and array E At some point, array X just contains two elements: string a and string b. I don't know how to determine how deep array A is. For example: arrA = [ [ [1,2] ] …

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• php multidimensional array if loop

  - by user1091558

  I have a multidimensional array like this array[value][1][1] Now i would like to implement if loop like this if ($value = array[value][1][1]) { echo "It works"; } Now it works if i assign the values like [1][1],[2][1]. Is it possible to compare the whole array. I mean if the array looks like …

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• I need help with 2D collision response (of stacking rotating polygons, with friction and gravity, for a game)

  - by Register Sole

  Hi I am looking for suggestions on how to write a collision response for game programming purpose (so not a scientific simulation). I am dealing with 2D polygons that are rotating, and I want them to be able to stack. I also want friction and gravity. I have a detection mechanism that returns the…

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• delete pointer to 2d array c ++

  - by user1848054

  i have this pointer to 2d array of Robot class Robot ***rob; and this is here the code for the constructor !! and the program works fine !!! but now i am trying to build a destructor to delete this pointer !! and it keeps on crashing the program !! my question is , how to delete this…

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• Erase operation in quartz 2D

  - by iphonedevnoob

  Any suggestions on how to perform erase operations in Quartz 2D?

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• XNA 2D mouse picking

  - by Corndog

  I'm working on a simple 2D Real time strategy game using XNA. Right now I have reached the point where I need to be able to click on the sprite for a unit or building and be able to reference the object associated with that sprite. From the research I have done over the last three days I…

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• More complex view matrix calculation required to composite 3d models with 2d video

  - by lzcd

  I'm utilising some 2d / 3d tracking data (provided by pfHoe) to help integrate some 3d models into the playback of some 2d video. Things are working.... okay... but there's still some visible 'slipping' of the models against the video background and I suspect this is may be because the…

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• C Programming: malloc() for a 2D array (using pointer-to-pointer)

  - by vikramtheone

  Hi Guys, yesterday I had posted a question: How should I pass a pointer to a function and allocate memory for the passed pointer from inside the called function? From the answers I got, I was able to understand what mistake I was doing. I'm facing a new problem now, can anyone help…

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• initialising a 2-dim Array in Scala

  - by Stefan W.

  (Scala 2.7.7:) I don't get used to 2d-Arrays. Arrays are mutable, but how do I specify a 2d-Array which is - let's say of size 3x4. The dimension (2D) is fixed, but the size per dimension shall be initializable. I tried this: class Field (val rows: Int, val cols: Int, sc:…

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• How to move positions within an array?

  - by Jade Mulholland

  A program that simply moves array elements. Two variables: userInputVariable and blankSpaceVariable. I have a 2D array named table. Defined as table[userInputVariable + 1][6] I am printing out this array in a table format, and the far left column is numbered by whatever…

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• PHP array help getting a value from the key

  - by sea_1987

  I have a variable that looks likes this, $rslt['expected_salary_level'] This returns a string similar to LEVEL_3, in another array that looks like this I have a set of salaries, Array ( [LEVEL_1] => Array ( [nice_name] => under…

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• PHP 5.2 Function needed for GENERIC sorting of a recordset array

  - by donbriggs

  Somebody must have come up with a solution for this by now. We are using PHP 5.2. (Don't ask me why.) I wrote a PHP class to display a recordset as an HTML table/datagrid, and I wish to expand it so that we can sort the datagrid by whichever column the user selects.…

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• Finding the sum of 2D Arrays in Ruby

  - by Bragaadeesh

  Hi, I have an array of two dimensional Arrays. I want to create a new two dimensional array which finds the sum of these values in the 2D arrays. Sum at x,y of new array = Sum at x,y of arr1 + Sum at x,y of arr2 + .... |1,2,4| |1,1,1| |1,1,1| |2,4,6| |1,1,1|…

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• copy array from one class to another class array

  - by shishir.bobby

  hi all, i hv an array ("array A", which contains 3 objects, fox ex, to,from,message) in class "A". and in class "B",i m having another array ("array B"),which fills tableview,of class "B" only. i need to fill tableview,with the values of class A's array (i.e…

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• How do I cap rendering of tiles in a 2D game with SDL?

  - by farmdve

  I have some boilerplate code working, I basically have a tile based map composed of just 3 colors, and some walls and render with SDL. The tiles are in a bmp file, but each tile inside it corresponds to an internal number of the type of tile(color, or wall). I…

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• How to sort an array by some specific key?

  - by vinothkumar

  I have an array look like below. $array[0]['keyword'] = 'cricket '; $array[0]['noofhits'] = '26'; $array[0]['keyword'] = 'food '; $array[0]['noofhits'] = '17'; $array[0]['keyword'] = 'mypax'; $array[0]['noofhits'] = '22'; $array[0]['keyword'] =…

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• How to declare a 2D array of 2D array pointers and access them?

  - by vikramtheone

  Hi Guys, How can I declare an 2D array of 2D Pointers? And later access the individual array elements of the 2D arrays. Is my approach correct? void alloc_2D(int ***memory, unsigned int rows, unsigned int cols); int main() { int i, j; int **ptr; …

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• slicing 2d numpy array

  - by MedicalMath

  I have a 2d numpy array called FilteredOutput that has 2 columns and 10001 rows, though the number of rows is a variable. I am trying to take the 2nd column of FilteredOutput and use it to populate a new 1d numpy array called timeSeriesArray using the…

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• [PHP] using the magic __set() method with 2D arrays

  - by Spoonface

  If I have the following registry class: Class registry { private $_vars; public function __construct() { $this->_vars = array(); } public function __set($key, $val) { $this->_vars[$key] = $val; } …

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• Transferring data from 2d Dynamic array in C to CUDA and back

  - by Soumya

  I have a dynamically declared 2D array in my C program, the contents of which I want to transfer to a CUDA kernel for further processing. Once processed, I want to populate the dynamically declared 2D array in my C code with the CUDA processed data. I…

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• Traverse 2D Array (Matrix) Diagonally

  - by jonobr1

  So I found this thread that was extremely helpful in traversing an array diagonally. I'm stuck though on mirroring it. For example: var m = 3; var n = 4; var a = new Array(); var b = 0; for(var i = 0; i < m; i++) { a[i] = new Array(n); …

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• php array_unique

  - by dotty

  HAy, i have an array Array( [0] => Array ( [0] => 33 [user_id] => 33 [1] => 3 [frame_id] => 3 ) [1] => Array ( [0] => 33 [user_id] => 33 [1] => 3 …

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• Scala Array constructor?

  - by Lukasz Lew

  scala> val a = Array [Double] (10) a: Array[Double] = Array(10.0) scala> val a = new Array [Double] (10) a: Array[Double] = Array(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0) Why these two expressions have different semantics?

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