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• How can I get the first element in an NSDictionary?

  - by Sheehan Alam

  I have an array of NSDictionaries. How can I pull out the first element in the dictionary? NSArray *messages = [[results objectForKey:@"messages"] valueForKey:@"message"]; for (NSDictionary *message in messages) { STObject *mySTObject = [[STObject alloc] init]; stID = mySTObject.stID; }

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• C++ Why isn't call by reference needed for strcpy()

  - by Ribbs

  I have a homework assignment with a number of questions. One is asking why the strcpy() function doesn't need the call by reference operator for CStrings. I've looked through the book numerous times and I can't, for the life of me, find the answer. Can anyone help explain this to me? It is an array of sorts so I would think you would need the call by reference.

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• How can I tell the number of replacements in a formatter string?

  - by sdanna

  Given the following method: (real method has a few more parameters, but the important ones are below...) public string DoSomething(string formatter, params string[] values) { // Do something eventually involving a call to String.Format(formatter, values); } Is there a way to tell if my values array has enough objects in it to cover the formatter, so that I can throw an exception if there aren't (short of doing the string.Format; that isn't an option until the end due to some lambda conversions)?

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• java: primitive arrays -- are they initialized?

  - by Jason S

  If I use a statement in my code like int[] a = new int[42]; does it initialized the array to anything in particular? (e.g. 0) I seem to remember this is documented somewhere but I am not sure what to search for.

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• IntentService android download and return file to Activity

  - by Andrew G

  I have a fairly tricky situation that I'm trying to determine the best design for. The basics are this: I'm designing a messaging system with a similar interface to email. When a user clicks a message that has an attachment, an activity is spawned that shows the text of that message along with a paper clip signaling that there is an additional attachment. At this point, I begin preloading the attachment so that when the user clicks on it - it loads more quickly. currently, when the user clicks the attachment, it prompts with a loading dialog until the download is complete at which point it loads a separate attachment viewer activity, passing in the bmp byte array. I don't ever want to save attachments to persistent storage. The difficulty I have is in supporting rotation as well as home button presses etc. The download is currently done with a thread and handler setup. Instead of this, I'd like the flow to be the following: User loads message as before, preloading begins of attachment as before (invisible to user). When the user clicks on the attachment link, the attachment viewer activity is spawned right away. If the download was done, the image is displayed. If not, a dialog is shown in THIS activity until it is done and can be displayed. Note that ideally the download never restarts or else I've wasted cycles on the preload. Obviously I need some persistent background process that is able to keep downloading and is able to call back to arbitrarily bonded Activities. It seems like the IntentService almost fits my needs as it does its work in a background thread and has the Service (non UI) lifecycle. However, will it work for my other needs? I notice that common implementations for what I want to do get a Messenger from the caller Activity so that a Message object can be sent back to a Handler in the caller's thread. This is all well and good but what happens in my case when the caller Activity is Stopped or Destroyed and the currently active Activity (the attachment viewer) is showing? Is there some way to dynamically bind a new Activity to a running IntentService so that I can send a Message back to the new Activity? The other question is on the Message object. Can I send arbitrarily large data back in this package? For instance, rather than send back that "The file was downloaded", I need to send back the byte array of the downloaded file itself since I never want to write it to disk (and yes this needs to be the case). Any advice on achieving the behavior I want is greatly appreciated. I've not been working with Android for that long and I often get confused with how to best handle asynchronous processes over the course of the Activity lifecycle especially when it comes to orientation changes and home button presses...

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• How to write ASCII special characters in a .Net string

  - by JimDaniel

  Suppose I want to use the ASCII special character FS(0x1C) in a .Net string, and then be able to format a byte array from that same string with the special character properly represented as a single byte, how would I do that? I can't seem to get my head around it. Thanks for any help you can give.

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• Can a PHP function return a lot of vars?

  - by sundowatch

  Can a PHP function return a lot of vars without array? I want like that: <?php public function a() { $a = "a"; $b = "b"; $c = "c"; } echo a()->a; echo a()->b; echo a()->c; ?> How can I access to $a,$b,$c vars?

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• iPhone UITableView with index can I push a different detailed view with every different cell?

  - by Tanner

  Hello All, I know its possible to create a table that has an index on the side and a search bar at the top that a user can type in to find an item, but is it possible to say to the table if array isEqual to "item1" push view1? I would like to push a different view with each cell. Anyone have any advice?

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• Overriding Built-in Classes (Python)

  - by Yipeng

  How can I view and override the full definition for built in classes? I have seen the library docs but am looking for something more. For e.g. is it possible to override the Array Class such that the base index starts from 1 instead of 0, or to override .sort() of list to a sorting algorithm of my own liking?

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• Question on struct

  - by barbgal

  i see lot of struct code like below struct codDrives { WCHAR letter; WCHAR volume[100]; } Drives[26]; we can use variables or array something like that to store the data.. but i am not sure why use struct in the programs. i am beginner so please for my dump question Thank you for the time spent to me

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• HTML5 click event

  - by RichadC

  I made an array of squares ctx.fillStyle = "rgb(0,0,0)"; for(x=0;x<=25;x++){ for(y=0;y<=25;y++){ ctx.fillRect(x, y, 20, 20); } } and I want a square to change its colour when clicked. How can I do that? I'm don't know much HTML5 and need some help. Thanks

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• How to extract text using regex?

  - by Lost_in_code

  In the HTML below: <a href="link1.php">1</a><a href="link2.php">2</a><a href="link3.php">3</a> How do I extract link1.php,link2.php,link3.php and push them into an array using regex? (There could be N number of <a> tags in the text)

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• How to optimize perl code for directory exists or not ?

  - by SCNCN2010

  sub DirectoryExists { my $param = shift; # Remove first element of the array shift @{$param}; # Loop through each directory to see if it exists foreach my $directory (@{$param}) { unless (-e $directory && -d $directory) { return 0; } } # True return 1; } is there any way to optimize this code ? is there any good way to optimize this code

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• How do you convert an int to a byte in Objective-C?

  - by suse

  Hello, I have an int value which needs to be converted into a byte array. How do you go about doing this in Objective-C? Are there methods to do this? Thank you,

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• How I return the size of the pointer that I have allocate with malloc?

  - by drigoSkalWalker

  See this example! int main( int argc, char ** argv ) { int *ptr = malloc(100 * sizeof (int)); printf("sizeof(array) is %d bytes\n", sizeof(ptr)); } The printf function return only 4 bytes! What is wrong? Thanks so much!!!

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• Simple stream read/write question in java

  - by Marius

  Hi, I'm trying to upload a file via URLConnection, but i need to read/write it as a binary file without any encoding changes. So i've tried to read byte[] array from FileInputStream, but now i have an issue. The PrintWriter object i use for outputing to the server does not allow me to do writer.write(content) (where content is of type byte[]). How can i fix this? Or is there another way to quickly copy binary data from a FileInputStream to a PrintWriter? Thank you

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• cakephp COUNT items per month in a year

  - by HyperCas

  How do you use cakephp to count, for example the number of posts, made every month in a year? Preferably using Model-find('count') and get the data in an array.

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• I got the address of a large managed object in WinDbg, what next?

  - by Mahen

  I created a high memory utilization dump and using !dumpheap -stat and !dumpheap -mt I got the address of two large string generic list of 30 MB each. I want to know more about these lists. What they contain or which piece of code is using them. Is there a way to find them out? 0:000 !do 2b370038 Name: System.Object[] MethodTable: 71e240bc EEClass: 71c0da54 Size: 33554448(0x2000010) bytes Array: Rank 1, Number of elements 8388608, Type CLASS Element Type: System.Collections.Generic.List`1[[System.String, mscorlib]] Fields: None

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• Testing stored procedures

  - by giri

  Hi , How to test procedures with record type parameters.I have a procedure which takes test_ap ,basic and user_name as inputs.where test_ap is of record/row type,basic record array type and user_name charater varying. I need to test the procedure in pgadmin. test_client(test_ap test_base, basic test_base_detail[], user_name character varying) Any suggestions plz.

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• SFTP not supported error with PHP & cURL

  - by Bad Programmer

  I followed the advice from this Stack Overflow question thread, but I keep hitting a snag. I am receiving the following error message: Unsupported protocol: sftp Here is my code: $ch = curl_init(); if(!$ch) { $error = curl_error($ch); die("cURL session could not be initiated. ERROR: $error.""); } $fp = fopen($docname, 'r'); if(!$fp) { $error = curl_error($ch); die("$docname could not be read."); } curl_setopt($ch, CURLOPT_URL, "sftp://$user_name:$user_pass@$server:22/$docname"); curl_setopt($ch, CURLOPT_UPLOAD, 1); curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_SFTP); curl_setopt($ch, CURLOPT_INFILE, $fp); curl_setopt($ch, CURLOPT_INFILESIZE, filesize($docname)); //this is where I get the failure $exec = curl_exec ($ch); if(!$exec) { $error = curl_error($ch); die("File $docname could not be uploaded. ERROR: $error."); } curl_close ($ch); I used the curl_version() function to see my curl information, and found that sftp doesn't seem to be in the array of supported protocols: [version_number] => 462597 [age] => 2 [features] => 1597 [ssl_version_number] => 0 [version] => 7.15.5 [host] => x86_64-redhat-linux-gnu [ssl_version] => OpenSSL/0.9.8b [libz_version] => 1.2.3 [protocols] => Array ( [0] => tftp [1] => ftp [2] => telnet [3] => dict [4] => ldap [5] => http [6] => file [7] => https [8] => ftps ) Is this a matter of my version of cURL being outdated, or is the SFTP protocol simply not supported at all? Any advice is greatly appreciated.

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• PHP - getting content of the POST request

  - by user364622

  I have problem with getting the content. I don't know the names of the post variables so I can't do this using = $_Post['name'] because I don't know the "name". I want to catch all of the variables send by POST method. How can I get keys of the $_Post[] array and the values related with them?

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• zend form multicheckboxes naming

  - by neziric

  how do i have to nest multicheckboxes so that they are named like this 'foo[]['bar']' . i've used subforms but they give me naming like this 'foo[bar][]'. my code: $sub = new Zend_Form_SubForm('sub'); $wish = new Zend_Form_Element_MultiCheckbox('bar'); $wish ->setMultiOptions($education_direction->getAll()) ->setLabel('Wish') ->setRequired(true); $sub-addElements(array( $wish )); $this-addSubForm($sub, 'foo');

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• Boost ForEach Question

  - by bobber205

  Trying to use something like the below with a char array but it doesn't compile. But the example with short[] works fine. Any idea why? :) char someChars[] = {'s','h','e','r','r','y'}; BOOST_FOREACH(char& currentChar, someChars) { } short array_short[] = { 1, 2, 3 }; BOOST_FOREACH( short & i, array_short ) { ++i; }

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• determine name of running function from eip address?

  - by user353394

  Given a void *eip and an array of struct function symbols that contain the address, symbolic name, and binding of all function symbols in the file, how do I determine the function running at the time of the error?

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• how to access char*** from dll import in C#

  - by mavrick

  I have a function in win32 dll with signature as: void func1(int a, char*** outData) int a -- input parameter char*** outData -- output parameter - pointer to array of char strings Any idea how to access this in C# using dll import & what should be the signature.

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