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• How to create a dynamic array of an Abstract class?

  - by outsyncof

  Lets say I have an abstract class Cat that has a few concrete subclasses Wildcat, Housecat, etc. I want my array to be able to store pointers to a type of cat without knowing which kind it really is. When I try to dynamically allocate an array of Cat, it doesn't seem to be working. Please help? Cat* catArray = new Cat[200];

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• Printing the structure of an array without its contents?

  - by Legend

  I was wondering if there is a way to print just the structure of the array without the contents. I generally use print_r to examine the structure but because my array contains some binary data, I'd rather not use this. Any suggestions?

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• How do I get a slice from an array reference?

  - by Sachin

  Let us say that we have following array: my @arr=('Jan','Feb','Mar','Apr'); my @arr2=@arr[0..2]; How can we do the same thing if we have array reference like below: my $arr_ref=['Jan','Feb','Mar','Apr']; my $arr_ref2; # How can we do something similar to @arr[0..2]; using $arr_ref ?

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• How do I use multiple arguments from an array to construct an execl() call in C?

  - by chucknelson

  I have a string array in C named args[] - now how can I use this list of arguments to construct a proper call to execl()? So if the array contains: {"/bin/ls","ls","-a","-l"} ...how can I eventually construct an execl() call that is: execl("/bin/ls","ls","-a","-l",NULL); I must be thinking about this wrong, as I can't find anything online, just talk about defining functions that can take a variable number of arguments.

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• PHP How to create comma separated list from array?

  - by st4ck0v3rfl0w

  Hi All, I know how to loop through items of an array using foreach and append a comma, but it's always a pain having to take off the final comma. Is there an easy PHP way of doing it? $fruit = array('apple', 'banana', 'pear', 'grape'); Ultimately I want $result = "apple, banana, pear, grape"

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• Why can't I create an array with size determined by a global variable?

  - by ashish yadav

  Why does the array a not get initialized by global variable size? #include<stdio.h> int size=5; int main() { int a[size]={1,2,3,4,5}; printf("%d",a[0]); return 0; } The compilation error is shown as "variable-sized object may not be initialized". According to me the array should get initialized by size.

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• Will the Order of my Associative Array be maintained from PHP to Javascript?

  - by Colin

  In PHP I'm running a mysql_query that has an ORDER BY clause. I'm then iterating through the results to build an associative array, with the row_id as the key. Then, I'm calling json_encode on that array and outputting the result. This page is loaded with AJAX, and defined in a Javascript variable. When I iterate through that Javascript variable, will I still have the order that was returned from the mysql_query?

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• How to get most recent date from an array of dates?

  - by sugarFornaciari

  Hy guys I have an array of dates such as array(5) { [0]=> string(19) "2012-06-11 08:30:49" [1]=> string(19) "2012-06-07 08:03:54" [2]=> string(19) "2012-05-26 23:04:04" [3]=> string(19) "2012-05-27 08:30:00" [4]=> string(19) "2012-06-08 08:30:55" } I would like to know which is the most recent date, comparing to the today date. Do you have any idea to do that?

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• Simplest way to match 2d array of keys/strings to search in perl?

  - by Ben Dauphinee

  Related to my previous question (found here), I want to be able to implement the answers given with a 2 dimensional array, instead of one dimensional. Reference Array row[1][0]: 13, row[1][1]: Sony row[0][0]: 19, row[0][1]: Canon row[2][0]: 25, row[2][1]: HP Search String: Sony's Cyber-shot DSC-S600 End Result: 13

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

  - by Scott

  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.

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• How do you check if a variable is an array in JavaScript ?

  - by Andy McCluggage

  I would like to check whether a variable is either an array or a single value in JavaScript. I have found a possible solution... if (variable.constructor == Array)... Is this the best way this can be done?

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• How to save web service response (a byte array) as a file using SOAP UI?

  - by sam

  I am using SOAP UI 3.0.1 for testing my web service which returns a byte array. I want to save the byte array as a word file. How do I accomplish it using Groovy Script or any other way? The web service response is, 0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAPgADAP7/CQAGAAAAAAA...............................

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• Best practice? - Array/Dictionary as a Core Data Entity Attribute

  - by Run Loop

  I am new to Core Data. I have noticed that collection types are not available as attribute types and would like to know what the most efficient way is of storing array/dictionary type data as an attribute (e.g. the elements that make up an address like street, city, etc. does not require a separate entity and is more conveniently stored as a dictionary/array than separate attributes/fields). Thank you.

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• Declare array as return type in gen-class method declaration in Clojure.

  - by Anton Kazennikov

  How to declare an array in method declaration in gen-class? (ns foo.bar (:gen-class :methods [[parseString [String Object] Object]])) That works fine. But the return type is really an array. How I can declare that so Java can understand it?

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• how to write the array into the sqlite database for objective-c ?

  - by uttam

  i have taken the data from databse into array now i want it to send it back into database by using the insert query. how can i insert the array of the data into the database.

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• Is Object constructor called when creating an array in Java?

  - by Peter Štibraný

  In Java, an array IS AN Object. My question is... is an Object constructor called when new arrays is being created? We would like to use this fact to instrument Object constructor with some extra bytecode which checks length of array being constructed. Would that work?

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• How to calculate MD5 Hash of an Array of strings in C++ using Crypto.h library in Linux ?

  - by Dhruv

  Hello friends, I have an array of strings.. I want to calculate the MD5 hash of these strings and want to store them in another array using Crypto.h library in C++ in Linux... So can anyone tell me how to do it? give some exapmle or sample code..

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• PHP get all function arguments as $key => $value array?

  - by web lover

  <?php function register_template(){ print_r(func_get_args()); # the result was an array ( [0] => my template [1] => screenshot.png [2] => nice template .. ) } register_template( # unkown number of arguments $name = "my template", $screenshot = "screenshot.png", $description = "nice template .. " ) ?> BUT , I want the result array as $key = $value form , $key represents the parameter name.

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• add current settext view string to string array and display last/previous added string to string arr

  - by zaid

  i want to add the current string in a textview view to a string array in arrays.xml.then display the last/previous added string of that array in a textview (setText).

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• Is it possible to pass an array as a command line argument to a PHP script?

  - by Manos Dilaverakis

  I'm maintaining a PHP library that is responsible for fetching and storing incoming data (POST, GET, command line arguments, etc). I've just fixed a bug that would not allow it to fetch array variables from POST and GET and I'm wondering whether this is also applicable to the part that deals with the command line. Can you pass an array as a command line argument to PHP?

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• How do you removing a cycle of integers (e.g. 1-2-3-1) from an array

  - by Cheryl

  If you have an array of integers, such as 1 2 5 4 3 2 1 5 9 What is the best way in C, to remove cycles of integers from an array. i.e. above, 1-2-5-4-3-2-1 is a cycle and should be removed to be left with just 1 5 9. How can I do this? Thanks!!

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• [PHP] How to pass array as multiple parameters to function?

  - by vbklv

  I have a parameters array: $params[1] = 'param1'; $params[2] = 'param2'; $params[3] = 'param3'; ... $params[N] = 'paramN'; I have a caller to various functions: $method->$function( $params ); How can I parse the $params array, so multiple (and unlimited) parameters can be passed to any function: $method->$function( $param[1], $param[2], ..., $param[N] );

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• how to search "n bits" in a byte array?

  - by ZhengZhiren

  i have a byte array. Now i need to know the count of appearances of a bit pattern which length is N. For example, my byte array is "00100100 10010010" and the pattern is "001". here N=3, and the count is 5. Dealing with bits is always my weak side.

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• How Array of our custom classes work with foreach without implemented IEnumerable ?

  - by Freshblood

  Hello everybody This long title already contain all my question so i just want to give example MyClass[] array How this array work with Foreach without implement IEnumerable interface's method ?

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• How to initialize an array to something in C without a loop?

  - by Ram Bhat

  Hey guys.. Lets say I have an array like int arr[10][10]; Now i want to initialize all elements of this array to 0. How can I do this without loops or specifying each element? Please note that this question if for C

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