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How to pass a multidimensional array of pointers to a function?
Multidimensional arrays are not managed in C++, you must declare your function as: void ord_matrix_multiplication(Cache& cache, Block* block1, Block* block2, Block* block3, int* A, int* B, int* C, int i, int j, int k, int n, int s) Thereafter you may index into those arrays in a multidimensional fashion, although you are responsible for data integrity and bound checking. Additionally, it is not standard C++ to be able to declare arrays of variable sizes. The sise of the array must be known at the time of declaration, or allocated in an initialization function using the 'new' keyword.

Categories : C++

Removing the elements from one multidimensional array from another multidimensional array
If you need to put together something quick, then use a nested loop to walk through the elements of Arr2 for each element in Arr1 and do a comparison on each. You can look at the answers to this question for a hint on comparing the inner arrays: how to check javascript array equals?

Categories : Javascript

After deleting the particular multidimensional array element in PHP, the Next array elements are not positioning automatically
Using unset doesn't alter the indexing of the Array. You probably want to use array_splice. http://www.php.net/manual/en/function.array-splice.php http://php.net/manual/en/function.unset.php

Categories : PHP

Pointers to Array Elements in C
Try this if (slotnumber == 1) { printf("%c", *character); } Also as pointed by Jonathan Leffler your code does not quit for if (strcmp(&diceinput, "exit")==0). You should use exit(0) to quit; if (strcmp(&diceinput, "exit")==0) { printf("Now quitting. Thank you, and please play again! "); exit(0); }

Categories : C

Get all the combinations of N elements of multidimensional array
Updated Per your restriction that elements that are contained in the same array in the beginning cannot be combined I've modified the algorithm to the following: Here is the updated jsfiddle that now even outputs the data in the correct format :) http://jsfiddle.net/QKg2H/7/ function getCombinations(arr, n) { if(n == 1) { var ret = []; for(var i = 0; i < arr.length; i++) { for(var j = 0; j < arr[i].length; j++) { ret.push([arr[i][j]]); } } return ret; } else { var ret = []; for(var i = 0; i < arr.length; i++) { var elem = arr.shift(); for(var j = 0; j < elem.length; j++) { var childperm = g

Categories : Javascript

Can I access elements of a 2D array using pointers in C++?
int* array[10] means an array of 10 pointers to integer. You can access a 2D array with a simple pointer to its first entry and do some maths exploiting the spacial location principle. int array[2][2] = {{1,2}, {3, 4}}; int* p = &array[0][0]; for(int i=0; i<2*2; i++) printf("%d ", *(p++)); If you have a matrix: 1 2 3 4 in memory it is encoded as 1 2 3 4 sequentially ;)

Categories : C++

Display multidimensional array in a customize way
You should check state index exist(1) or not(0) like: if ($values['state']) Try this one: foreach ($result as $days => $values) { echo "$days"; if ($values['state']) { echo " - Closed"; } else { echo ": ".$values['open']." - ".$values['close']; } echo "<br/>"; }

Categories : PHP

How to display multidimensional array with HTML
Try this code <?php //Your array- `$mrtlrt_line` foreach($mrtlrt_line as $key => $value) { echo '<h4>',$key,'</h4><div>'; foreach($value as $nkey=>$nval) { echo '<label class="label_check">'; echo '<input name="line" value="1" type="checkbox" />',$nval; echo '</label>'; } echo '</div>'; }

Categories : PHP

An array of pointers to a linked list elements
If you want an array of pointers, you should do: Tproduct **arrayOfPointers = (Tproduct**)malloc(N*sizeof(Tproduct*)); This code does exactly what you want - allocate memory for N Tproduct pointers. What's wrong with your code? Your type of arrayOfPointers is a pointer to Tproduct - so, you can manipulate it like1 an array of objects, but not like an array of pointers to the objects. 1 It's still a pointer, not an array. That's why like. In case you want an array of objects, you should allocate memory for N objects, not N pointers: malloc(N * sizeof(Tproduct)) // ^^^^^^^^ - Note: not a pointer And now I want to write a function returning an array of this type. What's the prototype? Tproduct** fill(); Should do the work. Example of function: Tproduct**

Categories : C

How to loop through & display Javascript Multidimensional Array
To return a value in a multidimensional array: array[n][m] is the mth element of the nth row. To do this for every element, use embedded for-loops: for (var i = 0; i < array.length; i++){ for (var j = 0; j < array[i].length; j++){ console.log(array[i][j]);

Categories : Javascript

why do we use pointers instead of index when referring to array elements in structs
I am wondering why do I have to use pointers? You do not have to, it is your choice. Is there any advantages of pointers to indexes? There is little, if any, difference between them on the modern hardware. On older hardware, however, pointers offered some improvement, because you could save on CPU cycles doing pointer arithmetic on indexing. Is there a preference of the use of . and -> in structs? No, there is no preference: p->x is an alternative syntax for (*p).x, the compiler would produce the same cod for both constructs.

Categories : C

Array of pointers vs. array of elements
He is wrong for any mainstream hardware I can think of. (at least in general). It could vary a little and there could be some special cases. Choose array of elements over array of pointers when you can. CPU caches like data to be contiguously packed. Allocating each element separately will increase cache misses, slow allocation time, and waste memory (due to allocation alignment). The gap between CPU speeds and memory grows every year, increasing the benefits of contiguously packed data and batch operations. You should read the document described in this question What Every Programmer Should Know About Memory. It describes all the ins and outs of modern CPU/Memory relationship in detail and why contiguous data is very important.

Categories : C

Jquery Array. How to display array elements that match if statements at once?
Rather than over-write your HTML each time, start appending: var current = $('#errors').html(); $('#errors').html( current + " " + error[ i ] ); Appending a ul of errors may be more appropriate, but this will get you started.

Categories : Javascript

Dynamic Multidimensional Java Structure to Replace Static Multidimensional Array
There's no multidimentional thing in Java.Java has array of arrays. You can use ArrayList with type parameter as ArrayList ArrayList<ArrayList<yourType>> myList = new ArrayList<ArrayList<yourType>>(); Also,don't worry about GC..It would collect as and when required..

Categories : Java

Unset a multidimensional array with another multidimensional array with values than key
$arr = Array( 0 => array( 'id' => 0, 'name' => 'a'), 1 => array( 'id' => 1, 'name' => 'b'), 2 => array( 'id' => 2, 'name' => 'c')); $arr2 = Array( 0 => array( 'id' => 0, 'name' => 'c'), 1 => array( 'id' => 1, 'name' => 'a')); $ex = array_map(function($a) {return $a['name'];}, $arr2); foreach ($arr as $key => $value){ if (in_array($value['name'], $ex)){ unset($arr[$key]); } } print_r($arr); Output: Array ( [1] => Array ( [id] => 1 [name] => b ) )

Categories : PHP

How to display Non Diagonal 2D Array elements
The function skips all elements in the diagonal 5739 (i != j takes care of this), but, based on the desired output, you also wish to skip all elements in the diagonal 4902. To also check for the other diagonal, replace if (i != j) with if (i != j && i != size-j-1) Test.

Categories : C++

How to make my UIPickerView display all elements of an array
you your Array contain Dictionar or NSMutableDictionar then you must specify value of array with it's key like bellow try to writtern you method like this: - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { return[[treatments objectAtIndex:row]valueForKey:@"YourKey"]; } Here is basic Implementation of Picker view sample example code:- - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thepickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)thepickerView numberOfRowsInComponent:(NSInteger)component { return [treatments count]; } customize displaying lable of UIpickerview like bellow:- - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)

Categories : Iphone

How to display array elements with jquery jsform
As it is simple array you don`t need selector now: <ul class="collection" data-field="data.links"> <li><span class="field">links</span> </ul>

Categories : Jquery

what are the initial values of pointers in "array of pointers"?
There is no requirement in C that any local variable should have any 'default' value. So, when the compiler reserves two (or three) memory locations, the initial value is whatever that these memory locations contained before - there will not be any default initialization.

Categories : C

Not all Array Elements Display When Using A Sort Method Logic
The last line of the public void sort(int[] arrays) function: System.out.println(); should be System.out.println(arrays[arrays.length - 1]); as you want to print the hole array. And for the record, the public void sort(int[] arrays) function does not actually sort an array. It is not what the sort should do just by one pass of checking and swapping of the neighboring elements. For example, if the array is initialized as: static int[] array = {2,1,5,3,5}; The resulting array of sort is: 53215, and the reversed array is 51235. Both are not the intended result.

Categories : Java

Zend Form add array of Elements in Display Group
Try this: $this->addElement('text', '1', array( 'label' => 'Text One', )); $this->addElement('text', '2', array( 'label' => 'Text Two', )); $this->addElement('text', '3', array( 'label' => 'Text Three', )); and then: $this->addDisplayGroup(array('1','2','3'), 'pcinfo', array('disableLoadDefaultDecorators' => true,'legend' => 'Other Block')); And don't forget to add these lines: $this->setDisplayGroupDecorators(array( 'FormElements', 'Fieldset' )); You can visit this blog ,you will get great help http://zendgeek.blogspot.in/2009/07/zend-form-display-groups-decorators.html

Categories : Misc

Angular.js: How do I use ng-bind to display concat. elements of an array as a string?
I would recommend making a grandTotal function on your $scope and then binding that, like this: http://jsfiddle.net/XMTQC/ HTML <div ng-app ng-controller="CartController"> Grand Total: <span>{{grandTotal()}}</span> <br/> Grand Total: <span ng-bind="grandTotal()"></span> <br/> </div> JavaScript $scope.grandTotal = function () { return $scope.items.reduce(function (p, c) { return p.price || p + c.price; }); }; You can also use interpolation (instead of ngBind) as indicated in the first span.

Categories : Javascript

how to display elements of json array returned from php within a loop in ajax(jquery)
I tried your function and it worked fine for me when I left out this line: contentType: "application/json", and when I added it in, I started getting a failed response of "0". In the manual, it says to use this content type for most cases: 'application/x-www-form-urlencoded; charset=UTF-8' (which is the default). So unless you have a good reason, I think you should remove that line. In the first function, it doesn't exist and you turned off 'json' dataType, so you are probably alerting a really nice looking string that looks like the data you want. If you make sure that you have dataType: 'json' and remove contentType: application/json', you should be good to go. EDIT: This is exactly what I used, and it worked great. Not sure what else to suggest. What is datastr in your js? $.ajax({

Categories : Jquery

Pointer multidimensional array to multidimensional array
You don't need to convert anything. Just dereference it by [][]: float **a; // allocate memory // a[0][0] = 1; Be careful to don't touch out-of-bound items which didn't allocate.

Categories : C++

How in input an array of integers by pointers and print out the array and the size of the array(C++)
This does not create an array, but it gives you a pointer to a single integer. int *p=new int; change this for example to: const unsigned size = 10; int * p = new int[size]; /*dont forget to call delete[] on p when you are ready.*/ Now p points to 10 ints, you know the size since you've put size to 10. Sure you can print the values of p without a loop /*Assuming you initialize the values.*/ cout << p[0]; cout << p[1]; /*etc*/ cout << p[9]; That said I think the easiest way to solve your problem is to use vector<int> ( but this doesn't satisfy you first point ). You'll always get the proper size of a vector with vector<TYPE>::size() and a intance of vector makes it easy to iterate ( which is also looping ) over the items to print them.

Categories : C++

How do I take a JS array that has some elements that are also arrays and make ALL array elements top level elements
You don't need the second step to have an array of arrays, just join then split it by the comma: var array = ["item1", "item2", "item3, item4", "item5", "item6"] console.log(array.join(',').split(',')); Example fiddle

Categories : Javascript

Returning an array and storing into another array, creating a multidimensional array
My function generatePrice() returns an array, No it doesn't, it returns undefined. XHR is asynchronous, see How to return the response from an AJAX call?. priceArray = generatePrice(resultArr[ctr].symbol); I can't seem to store it in another array You didn't attempt to do so, you just stored the result of every call in the priceArray variable - instead of in a property of the array. Use priceArray[ctr] = generatePrice(resultArr[ctr].symbol); // or priceArray.push( generatePrice(resultArr[ctr].symbol) );

Categories : Javascript

Combine elements from two multidimensional arrays in JavaScript
Here you have: var total = [[1370923200000, "66"],[1371009600000, "42"],[1371096000000, "23"]]; var successful = [[1370923200000, "5"],[1371096000000, "2"],[1371182400000, "0"]]; var combined = {}; for(var i=0; i<total.length; i++){ combined[total[i][0]] = {date: total[i][0], total: total[i][1]}; } for(var i=0; i<successful.length; i++){ if(successful[i][0] in combined){ combined[successful[i][0]].successful = successful[i][1]; } else{ combined[successful[i][0]] = { date: successful[i][0], successful: successful[i][1] }; } } var result = []; for(var key in combined){ result.push(combined[key]); } alert(result.toSource()); And a working fiddle http://jsfiddle.net/eRjeZ/

Categories : Javascript

Does std::set still sort when elements are wrapped in smart pointers?
shared_ptr<T> is designed as a drop-in replacement for T*, so it behaves like: std::multiset<Rectangle*> elements; Namely, it will sort by memory address. If you want to use the underlying operator<, you will need to specify a comparator that indirects and makes the comparison: [p,q]{*p < *q}

Categories : C++

how to get an array of unique key and associated value from multidimensional array with multiple keys and values
Live demo of this code: $temp = array(); foreach($results as $result){ $temp[$result['category']][] = $result['manufacturer']; } Output is as requested: array(1) { [1]=> array(3) { [0]=> string(1) "2" [1]=> string(1) "9" [2]=> string(2) "10" } } Note: All PHP arrays are associative arrays, so there's nothing you can do to get rid of the 0, 1, 2 indexes inside the array.

Categories : PHP

Setting values to a multidimensional array from one class to another; array not initialized?
Make sure you initialize the values array appropriately, either by using a field initializer: public float[,] values = new float[1, 1]; // new 1 by 1 array Or by setting the value of the field in the constructor: public float[,] values; public GRID() { this.values = new float[1, 1]; // new 1 by 1 array } Or you can set the value of the field externally: GRID grid = new GRID(); grid.values = new float[1, 1]; // new 1 by 1 array this.lblFirstVal.Text = "First Value (0,0): " + grid.values[0, 0]; Of course, you may want to set the width an height to something other than 1.

Categories : C#

How to create boolean index array for multidimensional NumPy array?
You can create a boolean mask that will be true when all your conditions are met: idx = ((A[:, 0] > 300) & (A[:, 0] < 400) & (A[:, 1] > 200) & (A[:, 1] < 250) & (A[:, 2] > 200) & (A[:, 2] < 300)) print A[idx] # this should give your array rows where idx is True You can test this: A = np.random.uniform(150, 500, (200, 5)).astype('i') idx = ((A[:, 0] > 300) & (A[:, 0] < 400) & (A[:, 1] > 200) & (A[:, 1] < 250) & (A[:, 2] > 200) & (A[:, 2] < 300)) print A[idx] #[[339 292 231 211 474] # [371 252 310 281 256] # [337 263 471 159 397] # [361 299 383 250 206] # [360 278 328 194 453] # [360 258 205 245 427] # [339 286 331 175 418]]

Categories : Arrays

Insert multidimensional associative array into multidimensional associative PHP
Just use $array= array(); $array[$var['bookshopname']]=array('opentime'=>$var1,'closetime'=>$var2); Your code creates extra entries because of array_push($array,$var['bookshopname']); Maybe you should read http://php.net/manual/en/function.array-push.php to understand better what array_push does Edit: If you just want to modify the values, try this $array[$var['bookshopname']]['opentime'] += 1; $array[$var['bookshopname']]['closetime'] -= 2;

Categories : PHP

C++ Flat Array vs Multidimensional Array Memory Footprint
If you do this: Object **c = new Object*[n]; for (size_t i=0; i!=n; ++i) { c[i] = new Object[m]; } then it will typically take more memory than doing this: Object *c = new Object[n*m]; for just the reasons you stated. Every memory allocation has a certain amount of overhead. In addition to needing to keep the number of elements, there is overhead for the memory allocator itself. It also takes more memory for all the extra pointers for each row. Note that it is possible to have a situation where breaking it up would use less memory. If your heap was fragmented, then finding one large chunk of memory may require allocating more memory from the operating system, whereas if your array was broken into smaller pieces, those pieces may be able to fit in the holes of your fragmented h

Categories : C++

PHP - merge/combine array values in multidimensional array
foreach ($a as $first_group_key => $first_group) { foreach ($a as $second_group_key => $second_group) { if ($second_group_key == $first_group_key) { continue; } $i = count($b[$first_group_key]); foreach ($second_group as $second_value) { foreach ($first_group as $first_key => $first_value) { $b[$first_group_key][$i][0] = $first_value; $b[$first_group_key][$i][1] = $second_value; $i++; } } } }

Categories : PHP

set array = one dimension's values of multidimensional object array
You can use the Array.map() function: var newArr = objects.map(function(w){ return w.firstKey; });

Categories : Javascript

How to create a multidimensional array out of an array and perform a filtering?
You can easily group array by doing like the following: $array = array( array( 'id' => 53, 'ratio' => 100, 'status' => 'I'), array( 'id' => 54, 'ratio' => 50, 'status' => 'C'), array( 'id' => 56, 'ratio' => 42, 'status' => 'D') ); // Grouping array by ratio $group = array(); foreach($array as $value) { $groupIndex = min($value['ratio'] / 10, 9); $group[$groupIndex][] = $value; } var_dump($group); Here is the sample output array (size=3) 9 => array (size=1) 0 => array (size=3) 'id' => int 53 'ratio' => int 100 'status' => string 'I' (length=1) 5 => array (size=1) 0 => array (size=3) 'id' => int 54 'ratio' => int 50 'status' => string '

Categories : PHP

Merge duplicate array keys in a multidimensional array
Here is a quick way to do it: function getIndex(a, email) { for (var i = 0; i < a.length; i++) { if (a[i][0] === email) { return i; } } return -1; } var a = [['john.doe@example.com', 64], ['john.doe@example.com', 65], ['jane.doe@example.com', 66]]; var b = [] for (var i = 0; i < a.length; i++) { var index = getIndex(b, a[i][0]); if(index == -1){ b.push(a[i]); }else{ b[index].push(a[i][1]); } }; console.log(b);

Categories : Javascript

Deleting specific array element from multidimensional array?
var myArray = [["Tom", "161"], ["Dick", "29"], ["Harry", "46"]]; var myNewArray = myArray.filter(function(item){ return item[1] != 29 }) .filter uses native code to loop over your array. Building a new array could of course be more expensive than just cutting a part out of the old one, to be tested.

Categories : Javascript

PHP Multidimensional Arrays , display data in a tabular form
You could create a function like this: function echoItemTable($num, &$items){ $val = $items[$num]; echo "<h2>".$num."</h2>"; echo "<table><thead><tr><th>Name</th><th>Code</th></tr></thead>"; echo "<tbody>"; foreach ($x = 0, $num = count($val["ItemName"); $x < $num; $x++){ echo "<tr><td>".$val["ItemName"][$x]."</td>"; echo "<td>".str_replace("IT-", "", $val["ItemCode"][$x])."</td></tr>"; } echo "</tbody>"; echo "</table>"; } and call it in your code like $ItemIndexes = array(147,256); foreach($ItemIndexes as $ItemMainIndex) { echoItemTable($ItemMainIndex, $items); }

Categories : PHP



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