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• In ActionScript, Is there a way to check if an input argument is a valid Vector of any type?

  - by ty

  In the following code: var a:Vector.<int> ... var b:Vector.<String> ... var c:Vector.<uint> ... var c:Vector.<MyOwnClass> ... function verifyArrayLike(arr:*):Boolean { return (arr is Array || arr is Vector) } verifyArrayLike(a); verifyArrayLike(b); ... What I'm looking for is something like _var is Vector.<*> But Vector.<*> is not a valid expression, even Vector. can not be placed at the right side of operators. Is there a way to check if an input argument is a valid Vector of any type?

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• How to manually manage Core Data relationships when deleting

  - by Simon

  I have a Core Data entity, which contains a relationship to another entity. Under certain circumstances, I need to delete the managed objects in the relationship, and at other times no action needs to be taken. I have the Delete Rule on the entity is No Action because of this manual management. The problem I have is, where is the best place to enforce these rules? I cannot see any suitable messages to override on NSManagedObject (something that might notify the object it has been deleted and should clear up its relationships). I would rather not do it higher up in the application logic, because the entity objects can get deleted from array controllers and at different points in the applications, making it necessary to stuff relationship update code at all those levels.

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• Given a string of red and blue balls, find min number of swaps to club the colors together

  - by efficiencyIsBliss

  We are given a string of the form: RBBR, where R - red and B - blue. We need to find the minimum number of swaps required in order to club the colors together. In the above case that answer would be 1 to get RRBB or BBRR. I feel like an algorithm to sort a partially sorted array would be useful here since a simple sort would give us the number of swaps, but we want the minimum number of swaps. Any ideas? This is allegedly a Microsoft interview question according to this.

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• Help with a MySQL SELECT WHERE Clause

  - by Dr. DOT

  A column in my table contains email addresses. I have a text string that contains the a few usernames of email addresses separated by commas. I can make text sting into an array if necessary to get my SELECT WHERE clause to work correctly. Text string search argument is 'bob,sally,steve' I want to produce a WHERE clause that only returns rows where the username portion of the email address in the table matches one of the usernames in my text string search argument. Thus a row with [email protected] would not be returned but [email protected] would be. Does anyone have a WHERE clause sample that produces this result? Thanks.

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• How to query_posts after the current timestamp and sort reverse chronologically?

  - by Jody Heavener

  I am using the following code in Wordpress to query events (custom post type) and order them by date chronologically.. query_posts( array( 'post_type' => 'events', 'showposts' => 10, 'orderby' => 'meta_value_num','meta_key' => '_ecmb_datetime' ) ); Where the meta key _ecmb_datetime is, this is the timestamp of the event. I don't want to show events that have already happened, so my question is how do I only show events happening after my current time, and how do I sort reverse chronologically? Any help is greatly appreciated

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• How to initialize a static const map in c++?

  - by Meloun

  Hi, I need just dictionary or asociative array string = int. There is type map C++ for this case. But I need make one map in my class make for all instances(- static) and this map cannot be changed(- const); I have found this way with boost library std::map<int, char> example = boost::assign::map_list_of(1, 'a') (2, 'b') (3, 'c'); Is there other solution without this lib? I have tried something like this, but there are always some issues with map initialization. class myClass{ private: static map<int,int> create_map() { map<int,int> m; m[1] = 2; m[3] = 4; m[5] = 6; return m; } static map<int,int> myMap = create_map(); } thanks

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• Minify CSS using preg_replace

  - by x3ro

  Hey folks, I'm trying to minify multiple CSS files using preg_replace. Actually, I'm only trying to remove any linebreaks/tabs and comments from the file. the following works for me: $regex = array('{\t|\r|\n}', '{(/\*(.*?)\*/)}'); echo preg_replace($regex, '', file_get_contents($file)); But I'd like to do it in a single multiline regex, like this: $regex = <<<EOF {( \t | \r | \n | /\*(.*?)\*/ )}x EOF; echo preg_replace($regex, '', file_get_contents($file)); However, this does not do anything at all. Is there any way to do this? Regards, x3ro Edit: Ok, so I'll take a look at existing minifiers, but it still leaves me with the question how I would do a multiline regex like this, because with the x-modifier multiline regexs should work fine even in php, shouldn't they?

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• Error in my OO Generics design. How do I workaround it?

  - by John

  I get "E2511 Type parameter 'T' must be a class type" on the third class. type TSomeClass=class end; ParentParentClass<T>=class end; ParentClass<T: class> = class(ParentParentClass<T>) end; ChildClass<T: TSomeClass> = class(ParentClass<T>) end; I'm trying to write a lite Generic Array wrapper for any data type(ParentParentClass) ,but because I'm unable to free type idenitifiers( if T is TObject then Tobject(T).Free) , I created the second class, which is useful for class types, so I can free the objects. The third class is where I use my wrapper, but the compiler throws that error. How do I make it compile?

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• Inserting into a bitstream

  - by evilertoaster

  I'm looking for a way to efficiently insert bits into a bitstream and have it 'overflow', padding with 0's. So for example if you had a byte array with 2 bytes: 231 and 109 (11100111 01101101), and did BitInsert(byteArray,4,00) it would insert two bits at bit offset 4 making 11100001 11011011 01000000 (225,219,24). It would be ok even the method only allowed 1 bit insertions e.g. BitInsert(byteArray,4,true) or BitInsert(byteArray,4,false). I have one method of doing it, but it has to walk the stream with a bitmask bit by bit, so I'm wondering if there's a simpler approach... Answers in assembly or a C derivative would be appreciated.

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• php domDocument variables

  - by geoffs3310

  Hi, I have the following code at the moment: $ip = '195.72.186.157'; $xmlDoc = new DOMDocument(); $xmlDoc->loadXML(file_get_contents('http://www.geoffmeierhans.com/services/geo-locator/locate/?ip='.$ip.'&output=xml')); foreach($xmlDoc->getElementsByTagName('city') as $link) { $links = array('text' => $link->nodeValue); } $city = $links['text']; echo $city; Is there a better way to get the city variable? Since there is only one tag called city a loop isn't really needed but I can't get it to work any other way

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• XML serialization and MS/Mono portability

  - by Luca

  I'm trying to have classes serialized using MS runtime and Mono runtime. While using MS runtime everything goes fine, but using Mono I give me some exception and program startup. The following exception are thrown: There was an error reflecting a type: System.TypeInitializationException (a class) There was an error reflecting a type: System.InvalidOperationException (a class) There was an error reflecting a field: System.ArgumentOutOfRangeException < 0 (an array of classes) The binary was compiled using MS SDK, but I don't think this is the problem. What's going on? .NET shouln't be portable? How to solve these exceptions?

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• ActionScript: Determine wether superclass implements a particular interface?

  - by David Wolever

  Is there any non-hacky way to determine wether a class' superclass implements a particular interface? For example, assume I've got: class A extends EventDispatcher implements StuffHolder { private var myStuff = someKindOfStuff; public function getStuff():Array { if (super is StuffHolder) // <<< this doesn't work return super['getStuff']().concat([myStuf]); return [myStuff]; } class B extends A { private var myStuff = anotherKindOfStuff; } How could I perform that super is StuffHolder test in a way that, well, works? In this case, it always returns true.

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• Remove empty subfolders with PHP

  - by Dmitry Letano

  I am working on a PHP function that will recursively remove all sub-folders that contain no files starting from a given absolute path. Here is the code developed so far: function RemoveEmptySubFolders($starting_from_path) { // Returns true if the folder contains no files function IsEmptyFolder($folder) { return (count(array_diff(glob($folder.DIRECTORY_SEPARATOR."*"), Array(".", ".."))) == 0); } // Cycles thorugh the subfolders of $from_path and // returns true if at least one empty folder has been removed function DoRemoveEmptyFolders($from_path) { if(IsEmptyFolder($from_path)) { rmdir($from_path); return true; } else { $Dirs = glob($from_path.DIRECTORY_SEPARATOR."*", GLOB_ONLYDIR); $ret = false; foreach($Dirs as $path) { $res = DoRemoveEmptyFolders($path); $ret = $ret ? $ret : $res; } return $ret; } } while (DoRemoveEmptyFolders($starting_from_path)) {} } As per my tests this function works, though I would be very delighted to see any ideas for better performing code.

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• Compile-time trigonometry in C

  - by lhahne

  I currently have code that looks like while (very_long_loop) { ... y1 = getSomeValue(); ... x1 = y1*cos(PI/2); x2 = y2*cos(SOME_CONSTANT); ... outputValues(x1, x2, ...); } the obvious optimization would be to compute the cosines ahead-of-time. I could do this by filling an array with the values but I was wondering would it be possible to make the compiler compute these at compile-time?

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• Insert A Line At The Beginning Of A File

  - by thebourneid

  I'm trying to insert/add a line 'COMMENT DUMMY' at the beginnig of a file as a first row if /PATTERN/ not found. I know how to do this with OPEN CLOSE function. Probably after reading the file it should look something like this: open F, ">", $fn or die "could not open file: $!"; ; print F "COMMENT DUMMY\n", @array; close F; But I have a need to implement this with the use of the Tie::File function and don't know how. use strict; use warnings; use Tie::File; my $fn = 'test.txt'; tie my @lines, 'Tie::File', $fn or die "could not tie file: $!"; untie @lines;

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• Why isnt php reading my cookie?

  - by Jason94

  at index.php i have a form to fill out some settings. the form posts to setsettings.php at setsettings.php it uses the form data and sets some cookies and redirect back to index.php. if i print_r($_COOKIE) at setsettings.php all is well. but nothing comes up at index.php, the $_COOKIE array is empty :( Does somebody know how i go about solving this? I set det setting by (setsettings.php): /* Write new cookie */ $expire = 60 * 60 * 24 * 60 + time(); // ~2 months setcookie("user_var_001", $_POST['selection'], $expire); and in index.php print_r($_COOKIE) turns up blank;

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• Creating 'select' listboxes using FormHelper in CakePHP

  - by joec

  I have two models Category and Point. The associations are defined as: Category hasMany Point Point belongsTo Category I would like, when adding Points to my database, to be able to select the category it belongs to from a <select> box, along with the rest of the form data. Where would i need to set the category list and how could i do it? And how would i produce the select box? I assume it could be done with $form->input('categorieslist',array('type'=>'select')); //categorieslist needs //setting somewhere. But i am fairly new to Cake and not done much with associations before. Thanks.

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• Doctrine generate models - problem with relation type

  - by mrok

  I am trying generate doctrine models from yaml schema I have schema like that: Product: columns: id: type: integer(5) primary: true unsigned: true autoincrement: true activation_time: type: datetime notnull: true enduser_id: type: integer(5) unsigned: true notnull: true relations: Enduser: foreignType: one type: one foreignAlias: Product Hostid: columns: id: type: integer(5) primary: true unsigned: true autoincrement: true value: type: string(32) fixed: true notnull: true Order: columns: id: type: integer(5) primary: true autoincrement: true unsigned: true expire_date: type: datetime description: type: clob Enduser: columns: id: type: integer(5) primary: true unsigned: true autoincrement: true hostid_id: type: integer(5) unsigned: true notnull: true order_id: type: integer(5) unsigned: true notnull: true relations: Order: foreignAlias: Endusers Hostid: foreignAlias: Endusers and the problem is that models generated by doctrine generate-models-yaml are wrong in BaseEnduser $Product is defined as Doctrine_Collection $this-hasMany('Product', array( 'local' = 'id', 'foreign' = 'enduser_id')); instead just Product object what did I wrong? relation is defined as foreignType: one type: one

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• Load list of image from folder

  - by marc-andre menard

  I have a folder of images, from 10 to 200, a webpage, a jquery fade and a php script that read folder full of images Is there any way to make the php script scan a folder, get a list of image (in an array ?) and pass it to jquery script ? (first question) Now, i can make a xml file from the result php list of files found or make a html <li> from the list in the html. is there ANY other way to do that ? (question #2)

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• jquery :not selector not working in next() method

  - by Richard

  what is the next best thing to use when you want to select the next li item, but not the one that has someClassName. The not selector returns an empty array! or is this a case off using filter? <li class="first">pickle</> <li class="someClassName">tomato</li> <li>chicken</> <li>cocosnut</> var current = $('ul.items li.first'); var next = current.next(':not(li.someClassName)'); thanks, Richard

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• php - get content from second pair of quotes in string

  - by Aaron Turecki

  I'm trying to get the contents of the second quotes and only the second quotes from a string. Right now I'm able to get the contents of all three quotes. What am I doing wrong? Is it possible to just print the second value in the output array? Text 2014-06-02 11:48:41.519 -0700 Information 94 NICOLE Client "[WebDirect] (207.230.229.204) [207.230.229.204]" opening database "FMServer_Sample" as "Admin". PHP if (preg_match_all('~(["\'])([^"\']+)\1~', $line, $matches)) $database_names = $matches[2]; print_r($database); Output [WebDirect] (207.230.229.204) [207.230.229.204], FMServer_Sample, Admin

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• Async call Objective C iphone

  - by Sam

  Hi guys, I'm trying to get data from a website- xml. Everything works fine. But the UIButton remains pressed until the xml data is returned and thus if theres a problem with the internet service, it cant be corrected and the app is virtually unusable. here are the calls: { AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; if(!appDelegate.XMLdataArray.count > 0){ [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; [appDelegate GetApps]; //function that retrieves data from Website and puts into the array - XMLdataArray. } XMLViewController *controller = [[XMLViewController alloc] initWithNibName:@"MedGearsApps" bundle:nil]; [self.navigationController pushViewController:controller animated:YES]; [controller release]; } It works fine, but how can I make the view buttons functional with getting stuck. In other words, I just want the UIButton and other UIButtons to be functional whiles the thing works in the background. I heard about performSelectorInMainThread but i cant put it to practice correctly any help is appreciated :)

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• When does ref($variable) return 'IO'?

  - by Zaid

  Here's the relevant excerpt from the documentation of the ref function: The value returned depends on the type of thing the reference is a reference to. Builtin types include: SCALAR ARRAY HASH CODE REF GLOB LVALUE FORMAT IO VSTRING Regexp Based on this, I imagined that calling ref on a filehandle would return 'IO'. Surprisingly, it doesn't: use strict; use warnings; open my $fileHandle, '<', 'aValidFile'; close $fileHandle; print ref $fileHandle; # prints 'GLOB', not 'IO' perlref tries to explain why: It isn't possible to create a true reference to an IO handle (filehandle or dirhandle) using the backslash operator. The most you can get is a reference to a typeglob, which is actually a complete symbol table entry [...] However, you can still use type globs and globrefs as though they were IO handles. In what circumstances would ref return 'IO' then?

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• Change ExtJS Grid Height in Javascript

  - by williamtroup

  How can I point at the object of a ExtJS Grid and manually set the height (in pixels)? For example, with this same: var grid = new Ext.grid.GridPanel({ store: store, columns: [ {id:'company',header: 'Company', width: 160, sortable: true, dataIndex: 'company'}, {header: 'Price', width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price'}, {header: 'Change', width: 75, sortable: true, renderer: change, dataIndex: 'change'}, {header: '% Change', width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'}, {header: 'Last Updated', width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'} ], stripeRows: true, autoExpandColumn: 'company', height: 350, width: 600, title: 'Array Grid', // config options for stateful behavior stateful: true, stateId: 'grid' }); I would i be able to point at the "grid" object and then set the size of the grid? Any help would be fantastic!

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• Paperclip - Validate File Type but not Presence

  - by Lowgain

  I am using paperclip to handle my file uploads, and in one situation I don't want the file to be mandatory. I do however want to make sure it is a specific file type when it is present. I have this: class TestModel < ActiveRecord::Base #stuff has_attached_file :sound #etc... validates_attachment_content_type :sound, :content_type => ['audio/mp3', 'application/x-mp3'] end And when I have no sound file present, it tells me it is not one of the valid content types. I've tried adding '' to the :content_type array, which also doesn't work! I also attempted creating a lambda procedure for the :if property, but I can't get it to run without some kind of error. Anything missing here?

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