arrays

What language is smart so that it could understand 'variable a = 0 , 20, ..., 300' ?

What language is smart so that it could understand 'variable a = 0 , 20, ..., 300' ? so you could easily create arrays with it giving step start var last var (or, better no last variable (a la infinite array)) and not only for numbers (but even complex numbers and custom structures like Sedenion's which you would probably define on your...

Objective-C NSMutableArray - foreach loop with objects of multiple classes

Hi, I have the NSMutableArray *children in the datastructure-class "Foo" which is the superclass of many others, like "Bar1" and "Bar2". That array stores Bar1 and Bar2 objects to get a tree-like recursive parent-children-structure of subclasses from Foo. To access the objects in the array, I loop through them using the foreach loop in ...

How to combine these two PHP arrays ?

I have two arrays in php that are part of an image management system. weighted_images A multidimensional array. Each sub array is an associative array with keys of 'weight' (for ordering by) and 'id' (the id of the image). array( 156 => array('weight'=>1, 'id'=>156), 784 => array('weight'=>-2, 'id'=>784), ) images This array ...

PHP Array Efficiency and Memory Clarification

When declaring an Array in PHP, the index's may be created out of order...I.e Array[1] = 1 Array[19] = 2 Array[4] = 3 My question. In creating an array like this, is the length 19 with nulls in between? If I attempted to get Array[3] would it come as undefined or throw an error? Also, how does this affect memory. Would the memory of 3 ...

Problem with assigning elements of a class array to individual variables in MATLAB

This is a bit of a duplicate of this question, this question, and this question, however those solutions don't work, so I'm asking mine. I've got an array of locally defined classes and I'd like to assign it to multiple, individual variables. This pattern doesn't work: %a is 2x1 of MyClass temp = mat2cell(a); [x,y] = temp{:}; %throws:...

Convert Decimal to ASCII

I'm having difficulty using reinterpret_cast. Lets just say right off the bat that I'm not married ot reinterpret_cast. Feel free to suggest major changes. Before I show you my code I'll let you know what I'm trying to do. I'm trying to get a filename from a vector full of data being used by a MIPS I processor I designed. Basically w...

Java: do arrays have a maximum size?

Is there a limit for an array in Java? Thanks ...

Jquery array submit

Hi, I have a page where there are 117 input fields. What i want is to submit them via Jquery ajax. What i am thinking is to make an array and send them by this way. I would like to ask how is it possible to take all inputs and then to put them in an array and then retrieve them from the php file (for example, should i do explode,or for e...

Assigning custom objects to array with a for loop?

Given this example: // Create an arary of car objects. car[] arrayOfCars= new car[] { new car("Ford",1992), new car("Fiat",1988), new car("Buick",1932), new car("Ford",1932), new car("Dodge",1999), new car("Honda",1977) }; I tried something like this: for (int i = ...

Populating JavaScript Array from JSP List

Ok so perhaps someone can help me with a problem I'm trying to solve. Essentially I have a JSP page which gets a list of Country objects (from the method referenceData() from a Spring Portlet SimpleFormController, not entirely relevant but just mentioning in case it is). Each Country object has a Set of province objects and each province...

Coldfusion 8: Array of structs to struct of structs

I've got an array items[] Each item in items[] is a struct. item has keys id, date, value (i.e., item.id, item.date, item.value) I want to use StructSort to sort the item collection by a date Is this the best way to do it in ColdFusion 8: <cfset allStructs = StructNew()> <cfloop array = #items# index = "item"> <cfset allStructs[it...

In Java why would one want to put the brackets in front of the name of an aray?

I've been told that int[] numbers and int numbers[] are equivalent. I've only ever seen the former though. What impetus is there, if ever, to write the latter? ...

Array split by range?

I have an array, i don't know the length but i do know it will be >=48bytes. The first 48bytes are the header and i need to split the header into two. Whats the easiest way? I am hoping something as simple as header.split(32); would work ([0] is 32 bytes [1] being 16 assuming header is an array of 48bytes) using .NET ...

Generating Fibonacci Numbers Using variable-Length Arrays Code Compiler Error.

Compile error in vs2010(Win32 Console Application Template) for the code below. How can I fix it. unsigned long long int Fibonacci[numFibs]; // error occurred here error C2057: expected constant expression error C2466: cannot allocate an array of constant size 0 error C2133: 'Fibonacci' : unknown size Complete code attached(It's a ...

Which of these Array Initializations is better in Ruby?

Hi, Which of these two forms of Array Initialization is better in Ruby? Method 1: DAYS_IN_A_WEEK = (0..6).to_a HOURS_IN_A_DAY = (0..23).to_a @data = Array.new(DAYS_IN_A_WEEK.size).map!{ Array.new(HOURS_IN_A_DAY.size) } DAYS_IN_A_WEEK.each do |day| HOURS_IN_A_DAY.each do |hour| @data[day][hour] = 'something' end end Method ...

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

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' =>'[email protected]', 'project' => array ('project_id' => 222, 'project_name' => 'design') ), array( 'id' => 2,...

echo POST array.. or other ideas?

Update: As seen in the Original Questions below, I am looking to echo an array. The problem is that when I send the Moneris gateway to return a POST array to my new file (cart.php) it gets a 500 Internal Server Error. This is the same error I received when it send to the script, which should have worked. Is there any reason that it wou...

PHP, is_array() generating an "Undefined property: stdClass::$crit " error

is_array($src2->crit) is generating an "Undefined property: stdClass::$crit" error. The line throwing the error is: if(is_array($src2->crit) && count($src->crit) > 0){ $src2->crit is initialized here. $src2->crit = array(); $src2->crit[0] = new dataSet(); $src2->crit[0]->tblName = $tbl2; $src2->crit[0]->colName = "ID"; $src2->crit...

Why does reusing arrays increase performance so significantly in c#?

In my code, I perform a large number of tasks, each requiring a large array of memory to temporarily store data. I have about 500 tasks. At the beginning of each task, I allocate memory for an array : double[] tempDoubleArray = new double[M]; M is a large number depending on the precise task, typically around 2000000. Now, I do som...

How can I pass a const array or a variable array to a function in C?

I have a simple function Bar that uses a set of values from a data set that is passed in in the form of an Array of data structures. The data can come from two sources: a constant initialized array of default values, or a dynamically updated cache. The calling function determines which data is used and should be passed to Bar. Bar does...