Tagged Questions

An array is an ordered data structure consisting of a collection of elements (values or variables), each identified by one (single dimensional array, or vector) or multiple indexes.

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1answer
24 views

jQuery JSON Decode ( PHP to Javascript)

I'm trying to make an autocomplete script. I pass variables through JSON, and then I don't know how to go on to decode JSON. This is an example of the JSON code I got, and I'd like to convert it in a ...
1
vote
1answer
20 views

Starting threads in a loop passing array elements to each

i start 4 threads in a loop. each thread gets a reference to an array element to write the result. But on the line where i create each thread, i get a System.IndexOutOfRangeException. I'm amazed that ...
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1answer
27 views

Find the given sum “total” from the three matrixes algorithm

i was following the this question and i felt that this can be solved in O(NLogN). Below is my algorithm: 1. Sort list1 , list2, list3 i.e. O(NLogN) 2. while indexA < size and indexB < size ...
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2answers
33 views

Array counting Error

I am trying to count from the following associative array in two's key->value filter, by Key-gender and Key-rname, Please see below ... <pre> Array ( [0] => Array ( ...
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4answers
19 views

An array of UIImageViews in objective-c

I already had many UIImageViews.. I want to make an array of UIImageViews and assign every element of the array with one of the UIImageViews above.. How can I do that with objective c?? I did it in ...
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2answers
27 views

Check if array value isset and is null

How to check if array variable $a = array('a'=>1, 'c'=>null); is set and is null. function check($array, $key) { if (isset($array[$key])) { if (is_null($array[$key])) { ...
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3answers
32 views

Hash to custom array implementation

Last newbie question for today. There is a hash: h = {a: 1, b: 2, c: 3} How to implement convert_to_arr(h) method with such output: convert_to_arr(h) # ["Key: 'a', Value: '1'", # "Key: 'b', ...
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0answers
14 views

Variable changes after the function triggered twice

I'm simply trying to modify a chrome extension. However I don't know much about JavaScript. I'm just a reader rather than writing stuff in JavaScript. Anyway, I wrote a function that inserts a little ...
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2answers
32 views

Change a hash into an array

I have an Rails 4 application that collects attendance at church services. Some weeks there are two services and some weeks there is only one. I need to get the total attendance for each week and show ...
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2answers
30 views

How do I create a custom “merge” method for hashes?

How do I implement a "custom_merge" method? h1 = {a: 1, c: 2} h2 = {a: 3, b: 5} This is a standard "merge" method implementation: h1.merge(h2) # => {:a=>3, :c=>2, :b=>5} My desired ...
1
vote
1answer
16 views

Fastest/Easiest way to store multiple arrays of data for multiple time steps

I have particle ID, x-position, y-position, x-velocity, and y-velocity data for thousands of time steps. I would like to be able to use find() across multiple time steps. For instance to find all ...
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2answers
28 views

array of UIImageView in objective c

I already had many UIImageViews.. I want to make an array of UIImageViews and assign every index with one of the UIImageViews above.. How can I do that with objective c??
1
vote
2answers
17 views

how to get items that belongs to all numpy arrays?

I need some analogue to numpy.in1d() function, my task is to have list of items, that more than 2 arrays have. For example i have 3 arrays: a = np.array((1,2,5,6,12)) b = np.array((1,3,7,8,5,14,19)) ...
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0answers
32 views

JS basic random image select

I've only started HTML yesterday and I'm trying to do a really basic memory game. First, there's an image of all the pieces, then a button that calls a function that hides that image and make another ...
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2answers
47 views

access arrays of arrays or objects

I would like to have an array of arrays like the following function shows. function getarrayinfo(index) { var myarray1=new Array(); myarray[0]=[1,1.1,1.2]; myarray[1]=[0.1,0.2,0.3]; ...

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