How can I do the Ruby method "Flatten" Ruby Method in C#. This method flattens a jagged array into a single-dimensional array. For example: s = [ 1, 2, 3 ] #=> [1, 2, 3] t = [ 4, 5, 6, [7, 8] ] #=> [4, 5, 6, [7, 8]] a = [ s, t, 9, 10 ] #=> [[1, 2, 3], [4, 5, 6, [7, 8]], 9, 10] a.flatten #=> [1, 2, 3, 4...
This question was inspired by a similar question: How does delete[] “know” the size of the operand array? My question is a little different: Is there any way to determine the size of a C++ array programmatically? And if not, why? Every function I've seen that takes an array also requires an integer parameter to give it the size. But...
I was always wondering if there is operator for deleting multi dimensional arrays in the standard C++ language. If we have created a pointer to a single dimensional array int *array = new int[size]; the delete looks like: delete [] array; That's great. But if we have two dimension array, we can not do delete [][] twoDimenstionalA...
Which is faster? someCondition has the same probability of being true as it has of being false. Insertion: arrayList = Array("apple", "pear","grape") if someCondition then ' insert "banana" element end if Deletion: arrayList = Array("apple","banana","pear","grape") if not someCondition then ' remove "banana" element end if ...
What’s the difference between the System.Array.CopyTo() and System.Array.Clone()? ...
I've declared Javascript arrays in such a way that I could then access them by a key, but it was a long time ago, and I've forgotten how I did it. Basically, I have two fields I want to store, a unique key, and its value. I know there is a way to do it.. something like: var jsArray = new {key: 'test test', value: 'value value'}, ...
I have two multidimensional arrays (well actually they're only 2D) which have inferred size. How do I deep clone them? Here's what I have gotten so far: public foo(Character[][] original){ clone = new Character[original.length][]; for(int i = 0; i < original.length; i++) clone[i] = (Character[]) original[i].clone(); } A test for...
I have a large array in C (not C++ if that makes a difference). I want to initialize all members to the same value. I could swear I once knew a simple way to do this. I could use memset() in my case, but isn't there a way to do this that is built right into the C syntax? ...
Probably a really simple one this - I'm starting out with C# and need to add values to an array, for example: int[] terms; for(int runs = 0; runs < 400; runs++) { terms[] = value; } For those who have used PHP, here's what I'm trying to do in C#: $arr = array(); for ($i = 0; $i < 10; $i++) { $arr[] = $i; } Thanks, Ross ...
Hi. I use linq To Objects instructions on an ordered array. Which operations shouldn't I do to be sure the order of the array is not changed? ...
How do I remove the key 'bar' from an array foo so that 'bar' won't show up in for(key in foo){alert(key);} ...
Is it possible to somehow mark a System.Array as immutable. When put behind a public-get/private-set they can't be added to, since it requires re-allocation and re-assignment, but a consumer can still set any subscript they wish: public class Immy { public string[] { get; private set; } } I thought the readonly keyword might do t...
I have an array which is a list of domains, I want to print all of the items in the array except the one which contains $x. $x is variable so basically it never prints the array item when it contains $x. Can anyone help me? :) ...
I am trying to create a multi dimensional array using this syntax: $x[1] = 'parent'; $x[1][] = 'child'; I get the error: [] operator not supported for strings because it is evaluating the $x[1] as a string as opposed to returning the array so I can append to it. What is the correct syntax for doing it this way? The overall goal is t...
Scenario: I'm currently writing a layer to abstract 3 similar webservices into one useable class. Each webservice exposes a set of objects that share commonality. I have created a set of intermediary objects which exploit the commonality. However in my layer I need to convert between the web service objects and my objects. I've used re...
Is there a better way to do the following: $array = array('test1', 'test2', 'test3', 'test4', 'test5'); // do a bunch of other stuff, probably a loop $array[] = 'test6'; end($array); echo key($array); // gives me 6 This will give the key of the most recently add array element. Is there a better way to do this? ...
Is there a max length for an array in C++? Is it a C++ limit or does it depend on my machine? Is it tweakable? Does it depend on the type the array is made of? Can I break that limit somehow or do I have to search for a better way of storing information? And what should be the simplest way? What I have to do is storing long long int o...
I have the following arrays in PHP (okay they are a bit bigger but the idea is what counts). $array1 = array(1 => 'a', 2 => 'b'); $array2 = array(3 => 'c', 4 => 'd'); Essentially I want to combine the two arrays as if it were something like this $array3 = array(1 => 'a', 2 => 'b', 3 => 'c', 4 => 'd'); Thanks ...
What I'm looking for is a basic equivalent of JavaScript's Array::join() whereby you pass in a separator character and uses that in its return string of all the subscripts. I could certainly write my own function using a StringBuilder or whatnot, but there must be something built into the .NET BCL. EDIT: Array of anything, not necessar...
Is there a preference or behavior difference between using: if(obj.getClass().isArray()) {} and if(obj instanceof Object[]) {} ? ...