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  • x=["key" => "value"]. How does it work in Ruby?

    - by Earlz
    Ok, so I was comparing some stuff in my own DSL to Ruby. One construct they both support is this x=["key" => "value"] Knowing the difference between arrays and hashes, I would think this to be illegal, but the result in Ruby is [{"key" => "value"}] Why is this? And with this kinda syntax why can't you do x=("key" => "value") Why is an array a special case for implicitly created hashes?

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  • (gcc) Multi-Dim Array or Double Pointer for Warning-free Compile

    - by paul simmons
    Hi, I have a function, which is called sometimes with regular, sometimes dynamic arrays. If I define the function as function_name(int[10][10] a) and send int** as a parameter, I get a warning. Opposite, if I declare function_name(int** a) and send int[][] as a parameter (after casting) I cannot access to array elements inside function. What is the correctest way?

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  • Is the following array really multidimensional?

    - by flockofcode
    Book I’ learning from claims that intArray has two dimensions. But since calling intArray.GetLength(1) will result in an IndexoutOfRange exception, couldn’t we claim that unlike rectangular arrays, intArray isn’t really multidimensional and thus has only one dimension? int[][] intArray=new int[3][]; thank you

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  • Bulk update & occasional insert (coredata) - Too slow

    - by Andrew
    Update: Currently looking into NSSET's minusSet links: http://stackoverflow.com/questions/1475636/comparing-two-arrays Hi guys, Could benefit from your wisdom here.. I'm using Coredata in my app, on first launch I download a data file and insert over 500 objects (each with 60 attributes) - fast, no problem. Each subsequent launch I download an updated version of the file, from which I need to update all existing objects' attributes (except maybe 5 attributes) and create new ones for items which have been added to the downloaded file. So, first launch I get 500 objects.. say a week later my file now contains 507 items.. I create two arrays, one for existing and one for downloaded. NSArray *peopleArrayDownloaded = [CoreDataHelper getObjectsFromContext:@"person" :@"person_id" :YES :managedObjectContextPeopleTemp]; NSArray *peopleArrayExisting = [CoreDataHelper getObjectsFromContext:@"person" :@"person_id" :YES :managedObjectContextPeople]; If the count of each array is equal then I just do this: NSUInteger index = 0; if ([peopleArrayExisting count] == [peopleArrayDownloaded count]) { NSLog(@"Number of people downloaded is same as the number of people existing"); for (person *existingPerson in peopleArrayExisting) { person *tempPerson = [peopleArrayDownloaded objectAtIndex:index]; // NSLog(@"Updating id: %@ with id: %@",existingPerson.person_id,tempPerson.person_id); // I have 60 attributes which I to update on each object, is there a quicker way other than overwriting existing? index++; } } else { NSLog(@"Number of people downloaded is different to number of players existing"); So now comes the slow part. I end up using this (which is tooooo slow): NSLog(@"Need people added to the league"); for (person *tempPerson in peopeArrayDownloaded) { NSPredicate *predicate = [NSPredicate predicateWithFormat:@"person_id = %@",tempPerson.person_id]; // NSLog(@"Searching for existing person, person_id: %@",existingPerson.person_id); NSArray *filteredArray = [peopleArrayExisting filteredArrayUsingPredicate:predicate]; if ([filteredArray count] == 0) { NSLog(@"Couldn't find an existing person in the downloaded file. Adding.."); person *newPerson = [NSEntityDescription insertNewObjectForEntityForName:@"person" inManagedObjectContext:managedObjectContextPeople]; Is there a way to generate a new array of index items referring to the additional items in my downloaded file? Incidentally, on my tableViews I'm using NSFetchedResultsController so updating attributes will call [cell setNeedsDisplay]; .. about 60 times per cell, not a good thing and it can crash the app. Thanks for reading :)

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  • classic asp comparison of comma seperated lists

    - by Reiwoldt
    Hello, I have two comma seperated lists:- 36,189,47,183,65,50 65, 50, 189, 47 the question is how to compare the two in classic ASP in order to identify and return any values that exist in list 1 but that don't exist in list 2 bearing in mind that associative arrays aren't available. e.g. in the above example I would need the return value to be 36,183 Thanks

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  • Array returning Null values

    - by Nick Gibson
    Dunno why it is...heres the coding for it. http://pastebin.org/301343 I know theres a lot of repetitiveness in the coding...but its because the arrays were retuning null so I got tired of messing with them. Everything works until it reaches line 224, which returns null values.

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  • What is the best approach in SQL to store multi-level descriptions?

    - by gime
    I need a new perspective on how to design a reliable and efficient SQL database to store multi-level arrays of data. This problem applies to many situations but I came up with this example: There are hundreds of products. Each product has an undefined number of parts. Each part is built from several elements. All products are described in the same way. All parts would require the same fields to describe them (let's say: price, weight, part name), all elements of all parts also have uniform design (for example: element code, manufacturer). Plain and simple. One element may be related to only part, and each part is related to one product only. I came up with idea of three tables: Products: -------------------------------------------- prod_id prod_name prod_price prod_desc 1 hoover 120 unused next Parts: ---------------------------------------------------- part_id part_name part_price part_weight prod_id 3 engine 10 20 1 and finally Elements: --------------------------------------- el_id el_code el_manufacturer part_id 1 BFG12 GE 3 Now, select a desired product, select all from PARTS where prod_id is the same, and then select all from ELEMENTS where part_id matches - after multiple queries you've got all data. I'm just not sure if this is the right approach. I've got also another idea, without ELEMENTS table. That would decrease queries but I'm a bit afraid it might be lame and bad practice. Instead of ELEMENTS table there are two more fields in the PARTS table, so it looks like this: part_id, part_name, part_price, part_weight, prod_id, part_el_code, part_el_manufacturer they would be text type, and for each part, information about elements would be stored as strings, this way: part_el_code | code_of_element1; code_of_element2; code_of_element3 part_el_manufacturer | manuf_of_element1; manuf_of_element2; manuf_of_element3 Then all we need is to explode() data from those fields, and we get arrays, easy to display. Of course this is not perfect and has some limitations, but is this idea ok? Or should I just go with the first idea? Or maybe there is a better approach to this problem? It's really hard to describe it in few words, and that means it's hard to search for answer. Also, understanding the principles of designing databases is not that easy as it seems.

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  • Sum Values in Multidimensional Array

    - by lemonpole
    Hello all. I'm experimenting with arrays in PHP and I am setting up a fake environment where a "team's" record is held in arrays. $t1 = array ( "basicInfo" => array ( "The Sineps", "December 25, 2010", "lemonpole" ), "overallRecord" => array ( 0, 0, 0, 0 ), "overallSeasons" => array ( "season1.cs" => array (0, 0, 0), "season2.cs" => array (0, 0, 0) ), "matches" => array ( "season1.cs" => array ( "week1" => array ("12", "3", "1"), "week2" => array ("8", "8" ,"0"), "week3" => array ("8", "8" ,"0") ), "season2.cs" => array ( "week1" => array ("9", "2", "5"), "week2" => array ("12", "2" ,"2") ) ) ); What I am trying to achieve is to add all the wins, loss, and draws, from each season's week to their respective week. So for example, the sum of all the weeks in $t1["matches"]["season1.cs"] will be added to $t1["overallSeasons"]["season1.cs"]. The result would leave: "overallSeasons" => array ( "season1.cs" => array (28, 19, 1), "season2.cs" => array (21, 4, 7) ), I tried to work this out on my own for the past hour and all I have gotten is a little more knowledge of for-loops and foreach-loops :o... so I think I now have the basics down such as using foreach loops and so on; however, I am still fairly new to this so bear with me! I can get the loop to point to $t1["matches"] key and go through each season but I can't seem to figure out how to add all of the wins, loss, and draw, for each individual week. For now, I'm only looking for answers concerning the overall seasons sum since I can work from there once I figure out how to achieve this. Any help will be much appreciated but please, try and keep it simple for me... or comment the code accordingly please! Thanks!

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  • ActionScript Defining a Static Constant Array

    - by TheDarkIn1978
    is it not possible to define a static const array? i would like to have an optional parameter to a function that is an array of colors, private static const DEFAULT_COLORS:Array = new Array(0x000000, 0xFFFFFF); public function myConstructor(colorsArray:Array = DEFAULT_COLORS) { } i know i can use ...args but i actually wanting to supply the constructor with 2 separate arrays as option arguments.

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  • Android java assigning 2d array to 3d array

    - by semajhan
    I'm running into problems trying to assign a 2d array to a 3d array, so I thought i'd ask a question about 3d and 2d arrays. Say I have a masterArray[][][] and wanted to put childArray1[][] and childArray2[][] into it. This is how I have done it and was wondering if that is the correct way of applying it: private int[][][] masterArray; private int[][] childArray1 = { {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 0, 0, 1, 0, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 0, 1, 1, 1, 1, 1, 1, 0, 1}, {1, 0, 1, 1, 1, 1, 0, 1, 0, 1}, {1, 0, 1, 1, 0, 1, 0, 1, 0, 1}, {1, 0, 1, 1, 0, 1, 1, 1, 0, 1}, {1, 0, 1, 1, 1, 1, 1, 1, 0, 1}, {1, 0, 1, 1, 0, 1, 1, 1, 0, 1}, {1, 0, 1, 1, 0, 1, 8, 1, 0, 1}, {1, 0, 7, 1, 1, 1, 0, 1, 0, 1}, {1, 0, 1, 1, 1, 1, 0, 1, 0, 1}, {1, 0, 1, 1, 1, 1, 1, 1, 0, 1}, {1, 0, 0, 0, 0, 0, 0, 9, 0, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} }; private int[][] childArray2 = { {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {0, 0, 0, 0, 0, 0, 0, 0, 1, 1}, {1, 1, 1, 1, 7, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 0, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 0, 0, 0, 1, 1, 1}, {1, 1, 1, 9, 1, 1, 8, 0, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, }; Ok, so in my init method I use these some methods to set the child arrays into the master array. What I was curious about was how this exactly works. I assumed the following: masterLevel = new int[MAX_LEVELS][MAP_WIDTH][MAP_HEIGHT]; for (int x = 0; x < MAP_WIDTH; x++) { for (int y = 0; y < MAP_HEIGHT; y++) { masterArray[currentLevel][x][y] = childArray1[x][y]; } } Would that work? In my application things aren't working so I picking out code that I am not 100% sure on.

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  • simple interview question

    - by calvin
    Input integer array: a[8] = { a1, a2, a3, a4, b1, b2, b3, b4 } Output array: a[8] = { a1, b1, a2, b2, a3, b3, a4, b4 } Forget all corner cases, make sure your solution works for any int array of size 2n. You can use one or two temp variables for looping or anything, but you shouldn't use any temp arrays/stacks/queues etc to store entire array or part of array. I'm able to get answer in O(n*log n), but I'm looking for better solution.

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  • CUDA compare arrays

    - by user315511
    Hello. Trying to make an app that will compare 1-to-multiple bitmaps. there is one reference bitmap and multiple other bitmaps. Result from each compare should be new bitmap with diffs. Maybe comparing bitmaps rather as textures than arrays? My biggest problem is making kernel accept more than one input pointer, and how to compare the data.. extern "C" __global__ void compare(float *odata, float *idata, int width, int height) works and following does not (i call the function with enough params) extern "C" __global__ void compare(float *odata, float *idata, float *idata2, int width, int height)

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  • Mapping functions of 2D numpy arrays

    - by perimosocordiae
    I have a function foo that takes a NxM numpy array as an argument and returns a scalar value. I have a AxNxM numpy array data, over which I'd like to map foo to give me a resultant numpy array of length A. Curently, I'm doing this: result = numpy.array([foo(x) for x in data]) It works, but it seems like I'm not taking advantage of the numpy magic (and speed). Is there a better way? I've looked at numpy.vectorize, and numpy.apply_along_axis, but neither works for a function of 2D arrays. EDIT: I'm doing boosted regression on 24x24 image patches, so my AxNxM is something like 1000x24x24. What I called foo above applies a Haar-like feature to a patch (so, not terribly computationally intensive).

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  • Array of Arrays in C#

    - by Betamoo
    I need to know how to initialize array of arrays in C#.. I know that there exist multidimensional array, but I think I do not need that in my case! I tried this code.. but could not know how to initialize with initializer list.. double[][] a=new double[2][];// ={{1,2},{3,4}}; Thank you PS: If you wonder why I use it: I need data structure that when I call obj[0] it returns an array.. I know it is strange.. Thanks

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  • php multidimensional arrays, memory management

    - by srk
    i need a structure like this array(){ [0] = array(){ [0] = array(){ // this array will have 'n' values(n is large, like 2000) } [1] = array(){ // this array will have 'n' values(n is large, like 2000) } } . . . . [n] = ............ n arrays will each have a 2 element array, where each element has an array of n values. I used $list[$m][0][$n] and $list[$m][1][$n] inside 2 for loops where $m,$n vary from 0...2000 this crosses the allowed memory size.. i can change the size in php.ini, but i want to optimize my memory usage and not change the limit. will using objects help ? Please provide some sample code to understand. Thank you.

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  • php split array into smaller even arrays

    - by SoulieBaby
    I have a function that is supposed to split my array into smaller, evenly distributed arrays, however it seems to be duplicating my data along the way. If anyone can help me out that'd be great. Here's the original array: Array ( [0] => stdClass Object ( [bid] => 42 [name] => Ray White Mordialloc [imageurl] => sp_raywhite.gif [clickurl] => http://www.raywhite.com/ ) [1] => stdClass Object ( [bid] => 48 [name] => Beachside Osteo [imageurl] => sp_beachside.gif [clickurl] => http://www.beachsideosteo.com.au/ ) [2] => stdClass Object ( [bid] => 53 [name] => Carmotive [imageurl] => sp_carmotive.jpg [clickurl] => http://www.carmotive.com.au/ ) [3] => stdClass Object ( [bid] => 51 [name] => Richmond and Bennison [imageurl] => sp_richmond.jpg [clickurl] => http://www.richbenn.com.au/ ) [4] => stdClass Object ( [bid] => 50 [name] => Letec [imageurl] => sp_letec.jpg [clickurl] => www.letec.biz ) [5] => stdClass Object ( [bid] => 39 [name] => Main Street Mordialloc [imageurl] => main street cafe.jpg [clickurl] => ) [6] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) [7] => stdClass Object ( [bid] => 34 [name] => Adrianos Pizza & Pasta [imageurl] => sp_adrian.gif [clickurl] => ) [8] => stdClass Object ( [bid] => 59 [name] => Pure Sport [imageurl] => sp_psport.jpg [clickurl] => http://www.puresport.com.au/ ) [9] => stdClass Object ( [bid] => 33 [name] => Two Brothers [imageurl] => sp_2brothers.gif [clickurl] => http://www.2brothers.com.au/ ) [10] => stdClass Object ( [bid] => 52 [name] => Mordialloc Travel and Cruise [imageurl] => sp_morditravel.jpg [clickurl] => http://www.yellowpages.com.au/vic/mordialloc/mordialloc-travel-cruise-13492525-listing.html ) [11] => stdClass Object ( [bid] => 57 [name] => Southern Suburbs Physiotherapy Centre [imageurl] => sp_sspc.jpg [clickurl] => http://www.sspc.com.au ) [12] => stdClass Object ( [bid] => 54 [name] => PPM Builders [imageurl] => sp_ppm.jpg [clickurl] => http://www.hotfrog.com.au/Companies/P-P-M-Builders ) [13] => stdClass Object ( [bid] => 36 [name] => Big River [imageurl] => sp_bigriver.gif [clickurl] => ) [14] => stdClass Object ( [bid] => 35 [name] => Bendigo Bank Parkdale / Mentone East [imageurl] => sp_bendigo.gif [clickurl] => http://www.bendigobank.com.au ) [15] => stdClass Object ( [bid] => 56 [name] => Logical Services [imageurl] => sp_logical.jpg [clickurl] => ) [16] => stdClass Object ( [bid] => 58 [name] => Dicount Lollie Shop [imageurl] => new dls logo.jpg [clickurl] => ) [17] => stdClass Object ( [bid] => 46 [name] => Patterson Securities [imageurl] => cmyk patersons_withtag.jpg [clickurl] => ) [18] => stdClass Object ( [bid] => 44 [name] => Mordialloc Personal Trainers [imageurl] => sp_mordipt.gif [clickurl] => # ) [19] => stdClass Object ( [bid] => 37 [name] => Mordialloc Cellar Door [imageurl] => sp_cellardoor.gif [clickurl] => ) [20] => stdClass Object ( [bid] => 41 [name] => Print House Graphics [imageurl] => sp_printhouse.gif [clickurl] => ) [21] => stdClass Object ( [bid] => 55 [name] => 360South [imageurl] => sp_360.jpg [clickurl] => ) [22] => stdClass Object ( [bid] => 43 [name] => Systema [imageurl] => sp_systema.gif [clickurl] => ) [23] => stdClass Object ( [bid] => 38 [name] => Lowe Financial Group [imageurl] => sp_lowe.gif [clickurl] => http://lowefinancial.com/ ) [24] => stdClass Object ( [bid] => 49 [name] => Kim Reed Conveyancing [imageurl] => sp_kimreed.jpg [clickurl] => ) [25] => stdClass Object ( [bid] => 45 [name] => Mordialloc Sporting Club [imageurl] => msc logo.jpg [clickurl] => ) ) Here's the php function which is meant to split the array: function split_array($array, $slices) { $perGroup = floor(count($array) / $slices); $Remainder = count($array) % $slices ; $slicesArray = array(); $i = 0; while( $i < $slices ) { $slicesArray[$i] = array_slice($array, $i * $perGroup, $perGroup); $i++; } if ( $i == $slices ) { if ($Remainder > 0 && $Remainder < $slices) { $z = $i * $perGroup +1; $x = 0; while ($x < $Remainder) { $slicesRemainderArray = array_slice($array, $z, $Remainder+$x); $remainderItems = array_merge($slicesArray[$x],$slicesRemainderArray); $slicesArray[$x] = $remainderItems; $x++; $z++; } } }; return $slicesArray; } Here's the result of the split (it somehow duplicates items from the original array into the smaller arrays): Array ( [0] => Array ( [0] => stdClass Object ( [bid] => 57 [name] => Southern Suburbs Physiotherapy Centre [imageurl] => sp_sspc.jpg [clickurl] => http://www.sspc.com.au ) [1] => stdClass Object ( [bid] => 35 [name] => Bendigo Bank Parkdale / Mentone East [imageurl] => sp_bendigo.gif [clickurl] => http://www.bendigobank.com.au ) [2] => stdClass Object ( [bid] => 38 [name] => Lowe Financial Group [imageurl] => sp_lowe.gif [clickurl] => http://lowefinancial.com/ ) [3] => stdClass Object ( [bid] => 39 [name] => Main Street Mordialloc [imageurl] => main street cafe.jpg [clickurl] => ) [4] => stdClass Object ( [bid] => 48 [name] => Beachside Osteo [imageurl] => sp_beachside.gif [clickurl] => http://www.beachsideosteo.com.au/ ) [5] => stdClass Object ( [bid] => 33 [name] => Two Brothers [imageurl] => sp_2brothers.gif [clickurl] => http://www.2brothers.com.au/ ) [6] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) ) [1] => Array ( [0] => stdClass Object ( [bid] => 44 [name] => Mordialloc Personal Trainers [imageurl] => sp_mordipt.gif [clickurl] => # ) [1] => stdClass Object ( [bid] => 41 [name] => Print House Graphics [imageurl] => sp_printhouse.gif [clickurl] => ) [2] => stdClass Object ( [bid] => 39 [name] => Main Street Mordialloc [imageurl] => main street cafe.jpg [clickurl] => ) [3] => stdClass Object ( [bid] => 48 [name] => Beachside Osteo [imageurl] => sp_beachside.gif [clickurl] => http://www.beachsideosteo.com.au/ ) [4] => stdClass Object ( [bid] => 33 [name] => Two Brothers [imageurl] => sp_2brothers.gif [clickurl] => http://www.2brothers.com.au/ ) [5] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) ) [2] => Array ( [0] => stdClass Object ( [bid] => 56 [name] => Logical Services [imageurl] => sp_logical.jpg [clickurl] => ) [1] => stdClass Object ( [bid] => 43 [name] => Systema [imageurl] => sp_systema.gif [clickurl] => ) [2] => stdClass Object ( [bid] => 48 [name] => Beachside Osteo [imageurl] => sp_beachside.gif [clickurl] => http://www.beachsideosteo.com.au/ ) [3] => stdClass Object ( [bid] => 33 [name] => Two Brothers [imageurl] => sp_2brothers.gif [clickurl] => http://www.2brothers.com.au/ ) [4] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) ) [3] => Array ( [0] => stdClass Object ( [bid] => 53 [name] => Carmotive [imageurl] => sp_carmotive.jpg [clickurl] => http://www.carmotive.com.au/ ) [1] => stdClass Object ( [bid] => 45 [name] => Mordialloc Sporting Club [imageurl] => msc logo.jpg [clickurl] => ) [2] => stdClass Object ( [bid] => 33 [name] => Two Brothers [imageurl] => sp_2brothers.gif [clickurl] => http://www.2brothers.com.au/ ) [3] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) ) [4] => Array ( [0] => stdClass Object ( [bid] => 59 [name] => Pure Sport [imageurl] => sp_psport.jpg [clickurl] => http://www.puresport.com.au/ ) [1] => stdClass Object ( [bid] => 54 [name] => PPM Builders [imageurl] => sp_ppm.jpg [clickurl] => http://www.hotfrog.com.au/Companies/P-P-M-Builders ) [2] => stdClass Object ( [bid] => 40 [name] => Ripponlea Mitsubishi [imageurl] => sp_mitsubishi.gif [clickurl] => ) ) [5] => Array ( [0] => stdClass Object ( [bid] => 46 [name] => Patterson Securities [imageurl] => cmyk patersons_withtag.jpg [clickurl] => ) [1] => stdClass Object ( [bid] => 34 [name] => Adriano's Pizza & Pasta [imageurl] => sp_adrian.gif [clickurl] => # ) ) [6] => Array ( [0] => stdClass Object ( [bid] => 55 [name] => 360South [imageurl] => sp_360.jpg [clickurl] => ) [1] => stdClass Object ( [bid] => 37 [name] => Mordialloc Cellar Door [imageurl] => sp_cellardoor.gif [clickurl] => ) ) [7] => Array ( [0] => stdClass Object ( [bid] => 49 [name] => Kim Reed Conveyancing [imageurl] => sp_kimreed.jpg [clickurl] => ) [1] => stdClass Object ( [bid] => 58 [name] => Dicount Lollie Shop [imageurl] => new dls logo.jpg [clickurl] => ) ) [8] => Array ( [0] => stdClass Object ( [bid] => 51 [name] => Richmond and Bennison [imageurl] => sp_richmond.jpg [clickurl] => http://www.richbenn.com.au/ ) [1] => stdClass Object ( [bid] => 52 [name] => Mordialloc Travel and Cruise [imageurl] => sp_morditravel.jpg [clickurl] => http://www.yellowpages.com.au/vic/mordialloc/mordialloc-travel-cruise-13492525-listing.html ) ) [9] => Array ( [0] => stdClass Object ( [bid] => 50 [name] => Letec [imageurl] => sp_letec.jpg [clickurl] => www.letec.biz ) [1] => stdClass Object ( [bid] => 36 [name] => Big River [imageurl] => sp_bigriver.gif [clickurl] => ) ) ) ^^ As you can see there are duplicates from the original array in the newly created smaller arrays. I thought I could remove the duplicates using a multi-dimensional remove duplicate function but that didn't work. I'm guessing my problem is in the array_split function. Any suggestions? :)

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  • two arrays defining 2d coordinates, as array indices, in matlab/octave

    - by Jason
    Hi, I have a 2D array, call it 'A'. I have two other 2D arrays, call them 'ix' and 'iy'. I would like to create an output array whose elements are the elements of A at the index pairs provided by x_idx and y_idx. I can do this with a loop as follows: for i=1:nx for j=1:ny output(i,j) = A(ix(i,j),iy(i,j)); end end How can I do this without the loop? If I do output = A(ix,iy), I get the value of A over the whole range of (ix)X(iy). Thank you, Jason

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  • filter that uses elements from two arrays at the same time

    - by Gacek
    Let's assume we have two arrays of the same size - A and B. Now, we need a filter that, for a given mask size, selects elements from A, but removes the central element of the mask, and inserts there corresponding element from B. So the 3x3 "pseudo mask" will look similar to this: A A A A B A A A A Doing something like this for averaging filter is quite simple. We can compute the mean value for elements from A without the central element, and then combine it with a proper proportion with elements from B: h = ones(3,3); h(2,2) =0; h = h/sum(h(:)); A_ave = filter2(h, A); C = (8/9) * A_ave + (1/9) * B; But how to do something similar for median filter (medfilt2 or even better for ordfilt2)

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  • Sort a set of multidimensional arrays by array elements

    - by Joseph Carrington
    Let's say I've started here: $arr[0] = array('a' => 'a', 'int' => 10); $arr[1] = array('a' => 'foo', 'int' => 5); $arr[1] = array('a' => 'bar', 'int' => 12); And I want to get here: $arr[0] = array('a' => 'foo', 'int' => 5); $arr[1] = array('a' => 'a', 'int' => 10); $arr[1] = array('a' => 'bar', 'int' => 12); How can I sort the elements in an array by those elements elements? Multidimensional arrays always feel like a little bit more than my brain can handle (-_-) (until I figure them out and they seem super easy)

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