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• What does int argc, char *argv[] mean?

  - by Greg Treleaven

  In many C++ IDE's and compilers, when it generates the main function for you, it looks like this: int main(int argc, char *argv[]) When I code C++ without an IDE, just with a command line compiler, I type: int main() without any parameters. What does this mean, and is it vital to my program?

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• Can primary index be a CHAR in MySQL?

  - by FFish

  My primary indexes are unique reference numbers like 002345 and 000023. If I format them as integers I loose my zero's. They need to be 6 digits. Can I use CHAR? I don't need any auto increments.

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• Sorting an array of objects in ActionScript 3

  - by vitto

  Hi, I'm trying to sort an array of objects with ActionScript 3. The array is like this: var arr:Array = new Array (); arr.push ({name:"John", date:"20080324", message:"Hi"}); arr.push ({name:"Susan", date:"20090528", message:"hello"}); can I do something with Array.sort(...) method?

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• Invalid length for a Base-64 char array.

  - by Scott Bedwell

  I'm getting the following error in my ASP.net web page: Invalid length for a Base-64 char array. This happens when a user activates an ajax request before the previous request completes. How can I prevent this error fro occurring?

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• Expecting a LexBuffer<char> but given a LexBuffer<byte> The type 'char' does not match the type 'by

  - by user152518

  Type mismatch. Expecting a LexBuffer but given a LexBuffer The type 'char' does not match the type 'byte' This is the error message that I am getting while using fslex. I have tried manually checking every single occurrence of lexbuf and its type. It's LexBuffer everywhere. But still the compiler is giving me the above error. Can you please tell me why this error occurs and how to go about resolving it. Thanks, chandrasekhar

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• What are the differences between these Array methods

  - by Sir Psycho

  These static Array methods have me puzzled. They seem to do the same things. Are they available for older legacy code? Array.IndexOf Array.FindIndex Array.LastIndexOf Array.FindLastIndex

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• Objective-C: initWithName:(char *)string

  - by iWalter

  How would you read this in English? My concern is with the pointer. Is that pointer associated with char or with string? Thanks in advance!

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• BINDing an ASP.NET 2.0 FormView - CheckBox or RadioButton to Oracle CHAR(1) Y/N

  - by Pete

  Oracle 9i has not BOOLEAN data type. CheckBoxes in ASP.NET are BOOLEAN controls are they not? So using a CHAR(1) column with Y or N values in the Oracle table, how do I bind to a CheckBox or CheckBoxList or RadioButton or RadioButtonList control on an ASP.NET 2.0 web form? I'm using VB, 'specially since I'm a noobie.

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• What is the equivalent of YUI 3's Y.Array() in jQuery

  - by Sudar

  What is the equivalent of YUI 3's Y.Array in jQuery? Y.Array() takes array like inputs and converts them into array. More info at http://developer.yahoo.com/yui/3/api/yui-array.js.html

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• Iterating bits of a char

  - by Hamza Yerlikaya

  Assuming I have char "C" whose ascii code is 0110 0111, How can iterate over its bits? I would like to build a vector from these 1's and 0's....

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• Why we can't have "char" enum types

  - by Praveen Sharma

  Hi All, I want to know why we can't have "char" as underlying enum type. As we have byte,sbyte,int,uint,long,ulong,short,ushort as underlying enum type. Second what is the default underlying type of an enum?

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• how to use the function " gtk_moz_embed_set_comp_path (char *aPath);"

  - by ganapati

  Hi, How to use the function extern void gtk_moz_embed_set_comp_path (char *aPath); and what is the use of that?

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• casting size_t to int to declare size of char array

  - by Brandon Hilton

  I am trying to declare a size of a char array and I need to use the value of the variable that is declared as a size_t to declare that size. Is there anyway I can cast the size_t variable to an int so that I can do that?

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• If exist in array (php)

  - by Glister

  There are two arrays, that are given for $link from foreach. One time $link must be a first arrow, and a third - the second. So: 1 array: Array ( [width] => 800 [height] => 1142 [hwstring_small] => height='96' width='67' [file] => 2010/04/white-1051279.jpg [sizes] => Array ( [thumbnail] => Array ( [file] => white-1051279-100x150.jpg [width] => 100 [height] => 150 ) [medium] => Array ( [file] => white-1051279-200x285.jpg [width] => 200 [height] => 285 ) ) [image_meta] => Array ( [aperture] => 0 [credit] => [camera] => [caption] => [created_timestamp] => 0 [copyright] => [focal_length] => 0 [iso] => 0 [shutter_speed] => 0 [title] => ) ) 2 array: Array ( [width] => 50 [height] => 50 [hwstring_small] => height='50' width='50' [file] => 2010/04/images1.jpeg [image_meta] => Array ( [aperture] => 0 [credit] => [camera] => [caption] => [created_timestamp] => 0 [copyright] => [focal_length] => 0 [iso] => 0 [shutter_speed] => 0 [title] => ) ) The difference - first one has [sizes]. Searching for a way to detect, is there [sizes] in given array. Tryed if (in_array("[sizes]", $link)) { } else { }, but it doesnt work. Thanks.

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• Memory leaks detected using type char pointers in std::list

  - by Dave18

  why i'm getting the memory leak errors without allocating or adding any elements to list below. should i just ignore it? #define CRTDBG_MAP_ALLOC #include <crtdbg.h> #include <list> using std::list; int main() { list <char*> roots; _CrtDumpMemoryLeaks(); }

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• Direct boost serialization to char array

  - by scooterman

  Hi all, Boost serialization doc's assert that the way to serialize/deserialize items is using a binary/text archive with a stream on the underlying structure. This works fine if I wan't to use the serialized data as an std::string, but my intention is to convert it directly to a char* buffer. How can I achieve this without creating a temporary string?

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• Java Optimization String vs Char Arrays

  - by ThePinkPoo

  In a program I am writing I am doing a lot of string manipulation. I am trying to increase performance and am wondering if using char arrays would show a decent performance increase. Any suggestions?

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• How to create 2D jagged array

  - by Ram

  In my code an array is declared as follows private Object[,] cellInfos = new Object[20, 10]; I need to convert it into Jagged array so I wrote following code private Object[][] cellInfos = { new Object[20], new Object[10] }; But it gave me a array with 2 items each of type array. I need to create 2D array where new Object[20] would be first column and new Object[10] would be the second one. Thanks.

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• Error-invalid length for a base-64 char array

  - by dmenaria

  Hi , I have silverlight app that post some data to another web application ,the data to post is converted to base 64 using code byte[] byteArray = Encoding.UTF8.GetBytes(sDataToPost); sDataToPost = Convert.ToBase64String(byteArray); Another webapplication get the data using the code strText = System.Text.Encoding.ASCII.GetString(System.Convert.FromBase64String(postedData)); But it gives the exception invalid length for a base-64 char array Thanks in Advance DNM

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• sort an array such that one half of the array has even numbers in ascending order and the other half

  - by nd81

  Design an algorithm with min time and space here is my solution - assume a array of N elements with 32 bit integers use a bit array to set the appropriate bits the array is sorted now assign even numbers to the first half of the array in ascending order assign odd numbers to the second half of the array in descending order any better solution ?

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• convert integer to array, c++

  - by kantor

  I would like to convert an integer into an array, so that it looks like the following: int number = 123456 ; int array[7] ; with the result: array[0] = 1 array[1] = 2 ... array[6] = 6

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• problem assigning array to variable

  - by shaw2thefloor

  Hi. I'm sure this is a simple one. I have an array in a simplexml object. When I try to assign the array to a variable, it only assigns the first index of the array. How can I get it to assign the whole array. This is my code. $xml = simplexml_load_string(FlickrUtils::getMyPhotos("flickr.photos.search", $_SESSION['token'])); $photosArray = $xml->photos; //$photosArray = $xml->photos->photo; //echo gettype($photosArray); print_r($photosArray); This is the result of the print_r($photosArray); SimpleXMLElement Object ( [@attributes] = Array ( [page] = 1 [pages] = 1 [perpage] = 100 [total] = 4 ) [photo] => Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 5335626037 [owner] => 57991585@N02 [secret] => bd66f06b49 [server] => 5210 [farm] => 6 [title] => 1 [ispublic] => 1 [isfriend] => 0 [isfamily] => 0 ) ) [1] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 5336238676 [owner] => 57991585@N02 [secret] => 898dffa011 [server] => 5286 [farm] => 6 [title] => 2 [ispublic] => 1 [isfriend] => 0 [isfamily] => 0 ) ) [2] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 5335625381 [owner] => 57991585@N02 [secret] => 60a0c84597 [server] => 5126 [farm] => 6 [title] => 4 [ispublic] => 1 [isfriend] => 0 [isfamily] => 0 ) ) [3] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 5335625195 [owner] => 57991585@N02 [secret] => 49348c1e8b [server] => 5126 [farm] => 6 [title] => 3 [ispublic] => 1 [isfriend] => 0 [isfamily] => 0 ) ) ) ) Thanks for youe help!

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• Java: How to return single char after string

  - by newSpringer

  I have a file directory which could look like either C:\projects\lab3\test\test.java or C:\projects\assignment3\test\test.java But the "lab3" or "assignment3" can appear anywhere in the directory, it is not a set directory What i want is to check to see if the directory either contains "lab" or "assignment" and get the number that follows. In this case "3" This is what i have so far if(directory.toLowerCase().contains("lab")){ } else if (directory.toLowerCase().contains("assignment")){ } but i do not know how to check for the char straight after the word?

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• ActionScript Defining a Static Constant Array

  - by TheDarkIn1978

  is it not possible to define a static const array? i would like to have an optional parameter to a function that is an array of colors, private static const DEFAULT_COLORS:Array = new Array(0x000000, 0xFFFFFF); public function myConstructor(colorsArray:Array = DEFAULT_COLORS) { } i know i can use ...args but i actually wanting to supply the constructor with 2 separate arrays as option arguments.

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• ActionScript Reading Static Const Array

  - by TheDarkIn1978

  how can i evaluate weather my test array is equal to my static constant DEFAULT_ARRAY? shouldn't my output be returning true? public class myClass extends Sprite { private static const DEFAULT_ARRAY:Array = new Array(1, 2, 3); public function myClass() { var test:Array = new Array(1, 2, 3); trace (test == DEFAULT_ARRAY); } //traces false

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