arrays

Numpy array dimensions

Hello, I'm currently trying to learn Numpy and Python. Given the following array: import numpy as N a = N.array([[1,2],[1,2]]) Is there a function that returns the dimensions of a (e.g.a is a 2 by 2 array). size() returns 4 and that doesn't help very much. Thanks. ...

size of array passed to C++ function ?

Possible Duplicates: Sizeof an array in the C programming language? determine size of array if passed to function Hello, how can I get the size of an array that is passed to a function ? I have this code, but it is not working for me float verts[] = { -1.0,1.0,1.0, 1.0,1.0,1.0, 1.0,-1.0,1.0, -1.0,-1.0,1.0, -1.0,1.0,...

How to rearrange the array element from 0th index in the sequence to end?

How to rearrange the array element from 0th index in the sequence to end in PHP? UPDATED I have an array: $input =array{ 2 => '13234390', 4 => '12345290', 5 => '21322210' } now I want this array to be rearra...

Declaring two large 2d arrays gives segmentation fault.

Hello, i'm trying to declare and allocate memory for two 2d-arrays. However when trying to assign values to itemFeatureQ[39][16816] I get a segmentation vault. I can't understand it since I have 2GB of RAM and only using 19MB on the heap. Here is the code; double** reserveMemory(int rows, int columns) { double **array; int i; ...

Powershell: Setting values of a filtered array

Hi All I want to read in a csv file, filter it based on the values of two of the fields and set the value of another field. Here's a simple example of what I'm trying to achieve: c:\somefile.csv contents: firstField,secondField,thirdField 1,2,"somevalue" 2,2,"avalue" 3,1,"somevalue" #Import file into array $csv = Import-Csv c:\somefi...

Array basics - Populating with loop

Hi, I'm looping through a zip file trying to add the file name of each file within. Is this the correct method? Dim ZipNameArray(?) Using zip As ZipFile = ZipFile.Read(ZipToUnpack) For Each file In zip ZipNameArray(?) = file .FileName Next End Using I do not know the array size until I start looping through the zip (T...

Java - easily convert array to set

Hey, I'd like to convert an array to a set in Java. There are some obvious ways of doing this (i.e. with a loop) but I would like something a bit neater, something like: java.util.Arrays.asList(Object[] a); Any ideas? Cheers, Pete ...

Read a file address from a txt file using netbeans c

Hi everybody. I`m having problems reading a file address from a txt file. The information seems to be corrupted when I watch it in the debugger. The code is FILE *parch; const char * vectorparch[50]; //array with 50 file paths parch = fopen("/home/irmay/NetBeansProjects/neurona/patrones/patrones.txt", "r"); for(j=0;j<50;j++){ fread...

How can I remove duplicates in an array but keep the same order?

I have this cell array in MATLAB: y = { 'd' 'f' 'a' 'g' 'g' 'a' 'w' 'h'} I use unique(y) to get rid of the duplicates but it rearranges the strings in alphabetical order: >> unique(y) ans = 'a' 'd' 'f' 'g' 'h' 'w' I want to remove the duplicates but keep the same order. I know I could write a function do do this bu...

Add 2 values to 1 key in a PHP array

I have a result set of data that I want to write to an array in php. Here is my sample data: **Name** **Abbrev** Mike M Tom T Jim J Using that data, I want to create an array in php that is of the following: 1|Mike|M 2|Tom|T 3|Jim|j I tried array_push($values, 'name', 'abbreviation') [pseudo code], which gave me the ...

How to Create an Array from a Single Variable and Form Multiple Foreach Loops?

I'm fairly proficient in HTML/CSS, but very new when it comes to the likes of PHP and Javascript. I've jumped headfirst into coding Wordpress shortcodes (basically php functions), and so far, through trial and error and seemingly endless browser refreshes, I've been able to figure everything out. I just hit a huge wall though, hence wh...

Convert List of one type to Array of another type using Dozer

I'm wondering how to convert a List of one type to an array of another type in Java using Dozer. The two types have all the same property names/types. For example, consider these two classes. public class A{ private String test = null; public String getTest(){ return this.test } public void setTest(String test){...

Why does javascript's "in" operator return true when testing if 0 exists in an array that doesn't contain 0?

Why does the "in" operator in Javascript return true when testing if "0" exists in array, even when the array doesn't appear to contain "0"? For example, this returns true, and makes sense: var x = [1,2]; 1 in x; // true This returns false, and makes sense: var x = [1,2]; 3 in x; // false However this returns true, and I don't und...

How to optimize this algorithm?

I have two sets of arrays like this for example. $Arr1['uid'][]='user 1'; $Arr1['weight'][]=1; $Arr1['uid'][]='user 2'; $Arr1['weight'][]=10; $Arr1['uid'][]='user 3'; $Arr1['weight'][]=5; $Arr2['uid'][]='user 1'; $Arr2['weight'][]=3; $Arr2['uid'][]='user 4'; $Arr2['weight'][]=20; $Arr2['uid'][]='user 5'; $Arr2['weight'][]=15; $Arr2['ui...

Convert PostgreSQL array to PHP array

I have trouble reading Postgresql arrays in PHP. I have tried explode(), but this breaks arrays containing commas in strings, and str_getcsv() but it's also no good as PostgreSQL doesn't quote the Japanese strings. Not working: explode(',', trim($pgArray['key'], '{}')); str_getcsv( trim($pgArray['key'], '{}') ); Example: // print_r(...

pre_replace multi-dimensional array problem

I want to replace word groups by links. I use a multi-dimensional array to define these (in the real world there will be thousands of them). Here's the code: $text = "<html><body><pre> Here is Foo in text. Now come Baz? and Bar-X. Replace nothing here: Foo (followed by brackets). </pre></body></html>"; $s = array( array("t" => "...

PHP checking $_POST

I have some form fields that when a form is submitted creates an array within the $_POST, I needing to check the this array has atleast 4 keys, how can I check that? I have no idea ...

In PHP how would I push the values of an array on to the end of itself

Say I have an array: $myArray = array("foo", "bar"); What is a good way to repeat the values in the array onto the end of the array so that: $myArray = array("foo", "bar", "foo", "bar"); I thought maybe array_push would work like this: array_push($myArray, $myArray); but that actually pushes the array object and not the values o...

Drupal 6 FusionChart PHP database data display

Hello, I am trying to get a pie chart display correctly but have found there to be not much documentation / guidance for drupal 6 and fusioncharts. anyways im aiming to query the database with this: $query = mysql_query("select * from content_type_engage"); Then i want to loop through the results and retrieve one specific value wi...

list or container O(1)-ish insertion/deletion performance, with array semantics

I'm looking for a collection that offers list semantics, but also allows array semantics. Say I have a list with the following items: apple orange carrot pear then my container array would: container[0] == apple container[1] == orangle container[2] == carrot Then say I delete the orange element: container[0] == apple cont...