arrays

Simpler array declaration syntax in C++

In the spirit of Go-language, where simpler syntax is considered pretty important, here's a proposal for simpler array declaration in C++: int value; int_1 list; int_2 table; int_3 cube; RECT rect; RECT_1 rects; Using typedefs this can expand to: int value; vector<int> list; vector<vector<int> > table; vector<vector<vector<int> ...

Catching 'Last Record' in Coldfusion for IE javascript bug

I'm using ColdFusion to pull UK postcodes into an array for display on a Google Map. This happens dynamically from a SQL database, so the numbers can range from 1 to 100+ the script works great, however, in IE (groan) it decides to display one point way off line, over in California somewhere. I fixed this issue in a previous webapp, th...

how to get key value of array with curl (php)

Hello I want to make use of an API but it print alot of info and i don't know how i can get a few key values of the array. <?php $query = "SELECT * FROM kvk WHERE adres='Wit-geellaan 158'"; $host = "http://api.openkvk.nl/php/"; $url = $host ."/". rawurlencode($query); $curl = curl_init(); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, ...

Ruby method Array#<< not updating the array in hash

Inspired by http://stackoverflow.com/questions/2552363/how-can-i-marshal-a-hash-with-arrays I wonder what's the reason that Array#<< won't work properly in the following code: h = Hash.new{Array.new} #=> {} h[0] #=> [] h[0] << 'a' #=> ["a"] h[0] #=> [] # why?! h[0] += ['a'] #=> ["a"] h[0] #=> ["a"] # as expected Does it have to do wit...

PHP: Splitting an array into a deeper array

Hello, I have the following array: Array( [0] => 0,0 [1] => 0,1 [2] => 0,2 [3] => 0,3 [4] => 1,0 [5] => 1,1 [6] => 1,2 [7] => 2,0 [8] => 2,1 [9] => 2,2 [10] => 2,3 ) And I would like to split it into the following structure: Array( [0] => Array ( [0] => 0 [1] => 1 [2] => 2 ...

Array performance question

I am very familiar with STL vector (and other container) performance guarantees, however I can't seem to find anything concrete about plain arrays. Are pointer arithmetic and [] methods constant or linear time? ...

php all values in array are identical?

how can I quickly tell if all values in array are identical? ...

Array pointer arithmetic question

Is there a way to figure out where in an array a pointer is? Lets say we have done this: int nNums[10] = {'11','51','23', ... }; // Some random sequence int* pInt = &nNums[4]; // Some index in the sequence. ... pInt++; // Assuming we have lost track of the index by this stage. ... Is there a way to deter...

Is there a better loop I could write to reduce database queries?

Below is some code I've written that is effective, but makes too many database queries. Is there a way I could optimize and reduce the number of queries but have conditional statements still be as effective as below? I pasted the code repeated a few times just for good measure. echo "<h3>Pool Packages</h3>"; echo "<ul>"; for...

Advanced Array Sorting in Ruby

I'm currently working on a project in ruby, and I hit a wall on how I should proceed. In the project I'm using Dir.glob to search a directory and all of its subdirectories for certain file types and placing them into an arrays. The type of files I'm working with all have the same file name and are differentiated by their extensions. Fo...

Typecast to an int in Octave/Matlab

I need to call the index of a matrix made using the linspace command, and based on somde data taken from an oscilloscope. Because of this, the data inputed is a double. However, I can't really call: Time[V0Found] where V0Found is something like 5.2 however, taking index 5 is close enough, so I need to drop the decimal. I used this ...

PHP: Filling in the 'gaps' in an array

Hey gurus, I've got a php array (obtained through checkbox values in a form - as you know checkboxes only show up in the _POST variable when they are not set). Array ( [2] => 0,2 [3] => 0,3 ) I need a way to 'fill in' the gaps between the range 0-5. So above would look like (filling the empty spaces with '-1'. I tried array_m...

Adding "this" to the parents stack for "each" in jQuery

This question is a bit of a two-parter. First, the title question. Here's what I've got: // Report all of the parents $(this).parents().each(function(i){ // Collect the parts in a var var $crumb = ''; // Get the tag name of the parent $crumb += "<span class='tagName'>"+this.tagName+"</span>"; // And finally, repor...

Doing a "Diff" on an Associative Array in javascript / jQuery?

If I have two associative arrays, what would be the most efficient way of doing a diff against their values? For example, given: array1 = { foreground: 'red', shape: 'circle', background: 'yellow' }; array2 = { foreground: 'red', shape: 'square', angle: '90', background: 'yellow' }; How would I ch...

select with conditions on array of composite types (postgresql)

For example I have type: CREATE TYPE record AS ( name text, description text, tags text[]) And table: CREATE TABLE items ( id serial, records record[] ) How can I select all items with records with tags 'test' (without using PL/pgSQL)? ...

Two dimensional array search in objective c

Hi All, i want to ask question that how can we search in a plist which is of array type and has elements of array type as well. i am searching from a plist which is of string element type and its working fine, but i am not able to search when it has array elements in the plist. Regards! ...

How are arrays passed?

Are arrays passed by default by ref or value? Thanks. ...

Count all lists of adjacent nodes stored in an array.

There are many naive approaches to this problem, but I'm looking for a good solution. Here is the problem (will be implemented in Java): You have a function foo(int a, int b) that returns true if 'a' is "adjacent" to 'b' and false if 'a' is not adjacent to 'b'. You have an array such as this [1,4,5,9,3,2,6,15,89,11,24], but in reality h...

Unable to access value of nested array element

I'm having an issue getting the value of a nested array element. Here's what I've got: print_r($environment); // Outputs Array ( [0] => Array ( ['parameter'] => Vibration ['conditions'] => 204 ['method'] => D ) [1] => Array ( ['parameter'] => Immersion ...

php array_unique

HAy, i have an array Array( [0] => Array ( [0] => 33 [user_id] => 33 [1] => 3 [frame_id] => 3 ) [1] => Array ( [0] => 33 [user_id] => 33 [1] => 3 [frame_id] => 3 ) [2] => Array ( [0] => 33 [user_id] => 33 [1] => 8 [frame...