arrays

is there a difference between malloced arrays and newed arrays

I'm normally programming in c++, but are using some clibrary functions for my char*. Some of the manpages like for 'getline', says that input should be a malloced array. Is it ok, to use 'new' instead? I can see for my small sample that it works, but could this at some point result in some strange undefined behavior? I know that a 'n...

Jquery Ajax Returned Array - how to handle in Javascript

Hi there, If someone could assist me please. I'm doing a jquery Ajax post, for some reason the Json object isn't working so just returning a php array instead $.post ( "classes/RegisterUser.php", $("#frmRegistration").serialize(), function(data) { alert(data); } ); The data is returned to Javascript 100% as ...

PHP to Javascript Array (Kind of)

Hi, Here in an array i have in javascript, this works great! _rowData: [ { name: "Most Recent", view: "recentView" }, { name: "Most Popular", view: "popularView" }, { name: "Staff Picks", view: "staffView" } ], How could i generate this array from a php script? I want to use AJAX to get the results returned by the php. ...

Sorting Javascript Array with Chrome?

Hi all, Is there a way to sort an array using Chrome? Using the sort function does not work as seen in this example: var myArray = [1,4,5,3,2]; myArray.sort ( function( a , b ){ return b>a }); for ( var i = 0; i < myArray.length; i++ ) { document.write( myArray[i] ) } Firefox / IE / Opera / Safri output: 54321 Chrome output...

printing out prime numbers from array

I'd like to print out all prime numbers from an array with method. I can do it with one int but don't know how to return certain numbers from array. Thanks for help! public static boolean isPrime(int [] tab) { boolean prime = true; for (int i = 3; i <= Math.sqrt(tab[i]); i += 2) if (tab[i] % i == 0) { ...

If found, return value one tab over [java]

I've successfully created an item scanner for my game. Here is my code: import java.io.*; import java.util.*; public class ItemScanner { public static void main(String args[]) { System.out.print("Enter item to find: "); Scanner sc = new Scanner(System.in); find(sc.nextLine()); } public static v...

Display only found results [java]

A follow up to my Item Scanner, a java tool that scans through a directory of *.txt files. Thank you all for the help! However now I have a different problem. When I get the results it reads strings I do not want it to read. How can I block out these strings I do not want it reading? This is an example what I mean: Enter item to fin...

global variables in C++

So I have something like this #define HASHSIZE 1010081 static struct nlist *hashtab[HASHSIZE]; Now I want to be able to change the HASHSIZE of my hashtab, because I want to test different primes numbers and see which would give me less collisions. But Arrays do not take variable sizes so HASHSIZE has to be a constant. Is there a way ...

c malloc for two dimensional array

hi i have the following c code int *a; size_t size = 2000*sizeof(int); a = (int *) malloc(size); which works fine... but now if i have the following char **b = malloc(2000*sizeof *b); where every element of b has different length... now, how is it possible to do the same thing for b as i did for a, i.e. is the below c...

Convert System.Array to string[]

I have a System.Array that I need to convert to string[]. Is there a better way to do this than just looping through the array, calling ToString on each element, and saving to a string[]? The problem is I don't necessarily know the type of the elements until runtime. ...

PHP: Trying to pull all values out of a multidimensional (recursive) array

Hi, I am trying to create a single array that contains all of the values of an existing multidimensional array. This is what I have so far... function MaxArray($arr) { foreach ($arr as $value) { if (is_array($value)) { MaxArray($value); } else { $array[] = $value; } } print...

c size of one array to another...

hi i have the following code... int *a, *b; int *d; int N = 2000; size_t size = N*sizeof(int); a = (int *) malloc(size); b = (int *) malloc(size); ... cudaMalloc((void **) &d, size); it works just fine... now assume i have the following char **t = malloc(2000* sizeof *t); for(...) { ... t[i] = (char *)mal...

initialize boost array/multi_array

Hi, i defined boost::multi_array with typedef boost::multi_array<unsigned int, 1> uint_1d_vec_t; typedef boost::multi_array<unsigned int, 2> uint_2d_vec_t; uint_1d_vec_t foo( boost::extents[ num_elements ] ); uint_2d_vec_t boo( boost::extents[ num_elements/2 ][ kappa ] ); were num_elements/2 ist an integer number...

ATL, COM, Arrays

Hello! There is the function GetLinksFromPage. She have created a links array, then I wanna pass that array to COM-object (only URLs), thus I have to convert CAtlArray< CComPtr< IDispatch> > to CComSafeArray< BSTR>. How I can do it ? HRESULT myclass::GetLinksFromPage( const CComPtr<IHTMLDocument2>& pDoc, CAtlArray<CComPtr<IDispatch> > &...

java array assignment question

Hi While using method Arrays.deepToString(Object [] a) I am facing this problem which I can put down in this way. Object [] not_allowed = new int[]{7, 9, 8}; Object [] allowed = new int[][]{{1, 2, 3}, {6, 5, 4}}; Why i am not allowed to assign int[] to Object[] in single dimension case but i am allowed to do such in multidimensio...

Javascript Array Key Retrieval

My JavaScript code stores a lot of data in arrays. I want to retrieve a key using something similar to what I wrote below. It key that should be retrieved is based on variables that are page-dependent . The following code doesn't work. Can anyone give me a solution to this problem? This is part of a script that does automatic conjugatio...

Auto complete an array according a vector

Hi, I have an array of 16 squares and I would like to auto complete it with integers values depending of the position in the array and the vector TOP_RIGHT. TOP_RIGHT = 3 # Build the array... @top_right = Array.new(16, 0) @top_right.each_index do |square| @top_right[square] = square / TOP_RIGHT if (0...16).include?(square - TOP_RIGH...

(C#) Quick way to operate on multiple Array items in sequence?

Hi all, C# newbie working off some tutorials. Is there a way to run an identical command on every object in an array? Here is my current (working) code: Guys[0].Cash += Guys[0].MyGuess.PayOut(WinnerNumber); Guys[1].Cash += Guys[1].MyGuess.PayOut(WinnerNumber); Guys[2].Cash += Guys[2].MyGuess.PayOut(WinnerNumber); I...

Initialization of arrays in C

Hi all.. In C, i have read tat half-initialized arrays will be filled with zeros for the rest of the elements (irrespective of integer or char arrays).. Eg: int arr[10] = {3}; arr[4] will be 0 if initialized and a junk value if not initialized My question is, will the above work for all C compilers (or) this appending of zeros mi...

Missing elements in an Ruby on Rails Array

Hi, i despair in case of an array. I put some data into an array, but when i iterate the array some elements of the array seems to be missed, but the missing element are displayed in the view. I'm using the Plugin Rails_Authorization. my Code: def index if !params[:task_id] #Tasks der 1. ebene anzeigen, auf die der User zugr...