arrays

Assign to an array and replace emerged nil values

Greetings! When assigning a value to an array as in the following, how could I replace the nils by 0? array = [1,2,3] array[10] = 2 array # => [1, 2, 3, nil, nil, nil, nil, nil, nil, nil, 2] If not possible when assigning, how would I do it the best way afterwards? I thought of array.map { |e| e.nil? ? 0 : e }, but well… Thanks! ...

Parsing a tweet to extract hashtags into an array in Python.

I am having a heck of a time taking the information in a tweet including hashtags, and pulling each hashtag into an array using Python. I am embarrassed to even put what I have been trying thus far. For example, "I love #stackoverflow because #people are very #helpful!" This should pull the 3 hashtags into an array. ...

How can I pass a hash to a Perl subroutine?

In one of my main( or primary) routines,I have two or more hashes. I want the subroutine foo() to recieve these possibly-multiple hashes as distinct hashes. Right now I have no preference if they go by value, or as references. I am struggling with this for the last many hours and would appreciate help, so that I dont have to leave perl ...

C: How come an array's address is equal to its value?

In the following bit of code, pointer values and pointer addresses differ as expected. But array values and addresses don't! How can this be? Output my_array = 0022FF00 &my_array = 0022FF00 pointer_to_array = 0022FF00 &pointer_to_array = 0022FEFC ... #include <stdio.h> int main() { char my_array[100] = "some cool string"; pri...

Double associative array or indexed + associative array

I have an array apple color: red price: 2 orange color: orange price: 3 banana color: yellow price: 2 When I get input, let's say green apple how do I check if it exists in the array and display its data (if it exists). ...

Javascript array length incorrect on array of objects

Could someone explain this (strange) behavior? Why is the length in the first example 3 and not 2, and most importantly, why is the length in the second example 0? As long as the keys are numerical, length works. When they are not, length is 0. How can I get the correct length from the second example? Thank you. a = []; a["1"] = {"strin...

Delphi: how to set the length of a RTTI-accessed dynamic array using DynArraySetLength?

I'd like to set the length of a dynamic array, as suggested in this post. I have two classes TMyClass and the related TChildClass defined as TChildClass = class private FField1: string; FField2: string; end; TMyClass = class private FField1: TChildClass; FField2: Array of TChildClass; end; The array augmentation is implem...

Splitting string into array upon token

I'm writing a script to perform an offsite rsync backup, and whenever the rsyncline recieves some output it goes into a single variable. I then want to split that variable into an array upon the ^M token, so that I can send them to two different logger-sessions (so I get them on seperate lines in the log). My current line to perform the...

how to change type of value in an php array and sorting it..is it possible ?

hi, i got problem with my code and hopefully someone able to figure it out. The main purpose is to sort array based on its value (then reindex its numerical key). i got this sample of filename : $filename = array("index 198.php", "index 192.php", "index 144.php", "index 2.php", "index 1.php", "index 100.php", "index 111.php"); ...

Decayed multidimensional array return from function

related to http://stackoverflow.com/questions/2520535/gcc-multi-dim-array-or-double-pointer-for-warning-free-compile , is there a way to return so-called "decayed array pointer" from a function? in summary (suppose 2 dim array) returning int (*a)[5] format rather than int** format? as far as I see, when returned int** pointer is sent to...

using a PHP print_r array result in javascript/jquery

Hello all.I have a simple jquery/ajax request to the server which returns the structure and data of an array. I was wondering if there was a quick way in which I can use this array structure and data using jquery; A simple request; var token = $("#token").val(); $.ajax({ type: 'POST', url: './', data: 'token=' + token + '&re=8', c...

is it possible if callback in array_filter receive parameter ?

i got this multiple array name $files[], who consist keys and values as below : [0] => Array ( [name] => index1.php [path] => http://localhost/php/gettingstarted/ [number] => 1 ) [1] => Array ( [name] => index10.php [path] => http://localhost/p...

javascript multidimensional array?

Hi there, I hope I can make myself clear in English and in what I want to create. I first start with what I want. I want to make a IBANcalculator that can generate 1-n IBANnumbers and also validate a given IBANnumber. IBANnumbers are used in many countries for payment and the tool I want to make can be used to generate the numbers for ...

I need to create a very large array of bits/boolean values. How would I do this in C/C++?

Is it even possible to create an array of bits with more than 100000000 elements? If it is, how would I go about doing this? I know that for a char array I can do this: char* array; array = (char*)malloc(100000000 * sizeof(char)); If I was to declare the array by char array[100000000] then I would get a segmentation fault, since the m...

How to read in space-delimited information from a file in c++

In a text file I will have a line containing a series of numbers, with each number separated by a space. How would I read each of these numbers and store all of them in an array? ...

Python: How to transfer varrying length arrays over a network connection

Hi, I need to transfer an array of varying length in which each element is a tuple of two integers. As an example: path = [(1,1),(1,2)] path = [(1,1),(1,2),(2,2)] I am trying to use pack and unpack, however, since the array is of varying length I don't know how to create a format such that both know the format. I was trying to turn...

Adding images to an array memory issue

Hello all, I'm currently facing the following issue: My app dynamically creates images (320 x 480 pixels) and adds them to a NSMutableArray. I need those images inside that array in order to allow users to browse through them back and forth. I only need to keep the latest 5 images. So I wrote a method like below: - (void)addImageToArr...

PHP output of foreach loop into a new array.

I know I'm probably missing something easy, but I have a foreach loop and I'm trying to modify the values of the first array, and output a new array with the modifications as the new values. Basically I'm starting with an array: 0 => A:B 1 => B:C 2 => C:D And I'm using explode() to strip out the :'s and second letters, so I want to ...

Casting Type array to Generic array?

The short version of the question - why can't I do this? I'm restricted to .NET 3.5. T[] genericArray; // Obviously T should be float! genericArray = new T[3]{ 1.0f, 2.0f, 0.0f }; // Can't do this either, why the hell not genericArray = new float[3]{ 1.0f, 2.0f, 0.0f }; Longer version - I'm working with the Unity engine here, alth...

xml to hashmap - php

Hi, Given an xml structure like this <gesmes:Envelope> <gesmes:subject>Reference rates</gesmes:subject> <gesmes:Sender> <gesmes:name>European Central Bank</gesmes:name> </gesmes:Sender> <Cube> <Cube time="2010-03-26"> <Cube currency="USD" rate="1.3353"/> <Cube currency="JPY" rate="124.00"/> <Cube currency="BGN" rate="1.9558"/> <Cube cur...