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  • What's the current (as of April 2010) state of affairs regarding <object> vs <embed> in HTML?

    - by rvdm
    The age old question. <object> vs <embed>. From what I gather, <object> is the XHTML-compliant way of doing things, while <embed> is for legacy support. I'm currently building a Flash application that will contain a pre-made embedding code for users to copy and paste, and I'm wondering if it's feasible to simply dump the <embed> tag altogether. Which browsers would be unable to load my application if I gave my users an <object>-only embed code? Thanks :)

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  • Overload and hide methods in Java

    - by Marco
    Hi, i have an abstract class BaseClass with a public insert() method: public abstract class BaseClass { public void insert(Object object) { // Do something } } which is extended by many other classes. For some of those classes, however, the insert() method must have additional parameters, so that they instead of overriding it I overload the method of the base class with the parameters required, for example: public class SampleClass extends BaseClass { public void insert(Object object, Long param){ // Do Something } } Now, if i instantiate the SampleClass class, i have two insert() methods: SampleClass sampleClass = new SampleClass(); sampleClass.insert(Object object); sampleClass.insert(Object object, Long param); what i'd like to do is to hide the insert() method defined in the base class, so that just the overload would be visible: SampleClass sampleClass = new SampleClass(); sampleClass.insert(Object object, Long param); Could this be done in OOP?

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  • Does remove a DOM object (in Javascript) will cause Memory leak if it has event attached?

    - by seatoskyhk
    So, if in the javascript, I create a DOM object in the HTML page, and attach event listener to the DOM object, upon I remove the the DOM from HTML page, does the event listener still exist and causing memory leak? function myTest() { var obj = document.createElement('div'); obj.addEventListener('click', function() {alert('whatever'); }); var body = document.getElementById('body'); // assume there is a <div id='body'></div> already body.appendChild(obj); } // then after some user actions. I call this: function emptyPage() { var body = document.getElementById('body'); body.innerHTML = ''; //empty it. } So, the DOM object, <div> inside body is gone. But what about the eventlistener? I'm just afraid that it will cause memory leak.

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  • How do I delete an object from an Entity Framework model without first loading it?

    - by Tomas Lycken
    I am quite sure I've seen the answer to this question somewhere, but as I couldn't find it with a couple of searches on SO or google, I ask it again anyway... In Entity Framework, the only way to delete a data object seems to be MyEntityModel ent = new MyEntityModel(); ent.DeleteObject(theObjectToDelete); ent.SaveChanges(); However, this approach requires the object to be loaded to, in this case, the Controller first, just to delete it. Is there a way to delete a business object referencing only for instance its ID? If there is a smarter way using Linq or Lambda expressions, that is fine too. The main objective, though, is to avoid loading data just to delete it.

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  • How to post JSON object to a URL without cURL in PHP? [closed]

    - by empyreanphoenix
    I have written a send sms code which uses an available sms api. So, I need to post a string in the json(string in $json) format to a url(url specified in $url var), but I am getting the following error String index out of range: -1 I understand that the error arises when requesting for an index that isn't there, but I dont find how that applies in this case. Please help. Note: name1,name2 and name3 are sender name, phone number and content respectively. Thanks array ( 'method' = 'POST', 'content' = $data, 'header' ="Authentication:$key" . "timeout:50000"."ContentLength: " . strlen ( $data) . "\r\n" ) ); if ($optional_headers != null) { $params ['http'] ['header'] = $optional_headers; } $ctx = stream_context_create ( $params ); try { $fp = fopen ( $url, 'rb', false, $ctx ); $response = stream_get_contents ( $fp ); echo "response"; } catch ( Exception $e ) { echo 'Exception: ' . $e-getMessage (); echo "caught"; } echo "done"; return $response; }

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  • What Java data structure/design pattern best models this object, considering it would perform these methods?

    - by zundarz
    Methods: 1. getDistance(CityA,CityB) // Returns distance between two cities 2. getCitiesInRadius(CityA,integer) // Returns cities within a given distance of another city 3. getCitiesBeyondRadius(CityA,integer) //Returns cities beyond a given distance of another city 4. getRemoteDestinations(integer) // Returns all city pairs greater than x distance of each other 5. getLocalDestinations(integer) //Returns all city pairs within x distance of each other

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  • XNA - How do I change the texture of a 2D object?

    - by Adorjan
    I am on to make a table game, I successfully figured out how to make the arraw and to move the cursor on it (by tiles). Now I wanna find out how to make that if I hit the Enter key the tile's texture change to another. I tryed like this: if (input.KeyPressed(Keys.Enter)) { cell[X,Y].Cell_texture = tile_texture; } but it doesn't really work. Hope you can help. :) Thanks!

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  • Moving two objects proportionally

    - by SSL
    I'm trying to move two objects away from each other at a proportional distance, but on different scales. I'm not quite sure how to do this. Object A can go from position 0.1 to 1. Object B has no limits. If object B is decreasing, then Object A should be decreasing at rate R. Likewise, if Object B is increasing, then Object A increases at rate R. How can I tie these two Object positions together so that in an update loop, they automatically update their positions? I tried using: ObjA.Pos += 0.001f * ObjB.VelocityY; //0.001f is the rate This works but there's an error each time it runs. ObjA starts off at its max position 1 but then the next time it will stop at 0.97, 0.94, 0.91 etc.. This is due to the 0.001f rate I put in. Is there a way to control the rate, yet not end up with the rounding error?

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  • How to insert an item into a key/value pair object?

    - by Clay
    Ok...here's a softball question... I just need to be able to insert a key/value pair into an object at a specific position. I'm currently working with a Hashtable which, of course, doesn't allow for this functionality. What would be the best approach? UPDATE: Also, I do need the ability to lookup by the key. For example...oversimplified and pseudocoded but should convey the point // existing Hashtable myHashtable.Add("somekey1", "somevalue1"); myHashtable.Add("somekey2", "somevalue2"); myHashtable.Add("somekey3", "somevalue3"); // Some other object that will allow me to insert a new key/value pair. // Assume that this object has been populated with the above key/value pairs. oSomeObject.Insert("newfirstkey","newfirstvalue"); Thanks in advance.

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  • subscribing an event to a class object before initializing it.

    - by GN
    I have two classes class A and B.I have a delegate n event published in class B.The class B object is declared in class A.All he functionality dependes on the parameterised constru ctor of class B. Before initializing the object of class B i need to subscibe the event for it.how to do it? e.g public class B { public delegate void myDel(string); public event myDel myEvent; B(object obj) { ----------------- ------------------ } } class A { A objA; class XYZ objXYZ; void func() { objA.myEvent+=new myDel(); objA=new A(objXYZ); // hw to attain this? } }

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  • In the context of an asp.net website, what's the most efficient way to check whether a User has acce

    - by scaramouch
    I have a webpage that you pass in an id parameter (via a querystring), which it then uses to fetch data from a database. Typically, a user would navigate to this page from another page that lists only those records that the user has access to. However, if they go directly to the page by typing in the URL in the Address Bar, they can effectively view any record they like. Eg. If they were to type something like http://localhost/TestSite/ClientAdmin/ManageLocation.aspx?LocationID=5 into their Address Bar, they can access the database record with the LocationID equal to five - even though they shouldn't have access to it. Now, I could solve this by doing a database check every time the page is loaded to see whether the current user has access to the record they're trying to view. However this doesn't seem very efficient given that in most cases a user won't be trying to access a record that isn't theirs. Does anyone have a better suggestion? Thanks.

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  • Can't use method return value in write context; Not sure where to go from here

    - by Morgan Green
    This is my source for the variable. <?php if ($admin->get_permissions()=3) echo 'Welcome to the Admin Panel'; else echo 'Sorry, You do not have access to this page'; ?> And the code that I'm actually trying to call with the if statement is: public function get_permissions() { $username = $_SESSION['admin_login']; global $db; $info = $db->get_row("SELECT `permissions` FROM `user` WHERE `username` = '" . $db->escape($username) . "'"); if(is_object($info)) return $info->permissions; else return ''; } This should be a simple way to call my pages that the user is authorized for by using an else if statement. Or So I thought

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  • Should my game handle collisions in the Player object?

    - by user1264811
    I'm making a 2D platform game. Right now I'm just working on making a very generic Player class. I'm wondering if it would be more efficient/better practice to have an ActionListener within the Player class to detect collisions with Enemy objects (also have an ActionListener) or to handle all the collisions in the main world. Furthermore, I'm thinking ahead about how I will handle collisions with the platforms themselves. I've looked into the double boolean arrays to see which tiles players can go to and which they can't. I don't understand how to use this class and the player class at the same time.

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  • Django GenericRelation doesn't save related object's id - is this a bug or am I doing it wrong?

    - by pinkeen
    I have a model with a generic relation (call it A), when creating an instance of this object I pass an instance of another model (call it B) as the initializer of the content_object field (via kwargs of the constructor). If I don't save B before creating A then when saving A the content_object_id is saved to the db as NULL. If I save B before passing it to the constructor of A then everything's allright. It's not logical. I assumed that the ID of the related object (B) is fetched when doing A.save() and it should throw some kind of an exception if B isn't saved yet but it just fails silently. I don't like the current solution (saving B beforhand) because we don't know yet if I will be always willing to keep the object, not just scrap it, and there are performance considerations - what if I will add some another data and save it once more shortly after. class BaseNodeData(models.Model): ... extnodedata_content_type = models.ForeignKey(ContentType, null=True) extnodedata_object_id = models.PositiveIntegerField(null=True) extnodedata = generic.GenericForeignKey(ct_field='extnodedata_content_type', fk_field='extnodedata_object_id') class MarkupNodeData(models.Model): raw_content = models.TextField() Suppose we do: markup = MarkupNodeData(raw_content='...') base = BaseNodeData(..., extnodedata=markup) markup.save() base.save() # both records are inserted to the DB but base is stored with extnodedata_object_id=NULL markup = MarkupNodeData(raw_content='...') base = BaseNodeData(..., extnodedata=markup) base.save() markup.save() # no exception is thrown and everything is the same as above markup = MarkupNodeData(raw_content='...') markup.save() base = BaseNodeData(..., extnodedata=markup) base.save() # this works as expected Of course I can do it this way, but it doesn't change anything: base = BaseNodeData(...) base.extnodedata = markup My question is - is this a bug in django which I should report or maybe I'm doing something wrong. Docs on GenericRelations aren't exactly verbose.

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  • how to stop enemies from moving to one point when lots of them are chasing one object [duplicate]

    - by BBgun
    This question already has an answer here: Is there a simple way to stop enemies standing in the same spot? 8 answers i am making a top down game which lots of enemies are chasing one guy. then,enemies would move to one point without any collision,they just overlay each other. so ,is there any simple way to make them feel more real? make them not overlay with each other? ================================= i have tried the solution using boundbox to check collision, but i still very puzzled about what to do with the collision. i have a bad solution.it doesn't work well. my solution in simple: foreach(around_enemy_arr in other) { vector a = normalize(self.positionvector - other.positionvector); self.move_vector = self.move_vector + a; } this can work,but when plenty of enemies come very close to each other,they would shake. i am sooooo confused. please help.

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  • ASP.NET MVC - Custom object instantiation / providing with the Modelbinder?

    - by ropstah
    Is it possible to customize the object initiation / providing with the default ASP.NET MVC Modelbinder? <AcceptVerbs(HttpVerbs.Post)> _ Function EditObject(id As int, <Bind(Exclude:="Id")> obj As BLL.Object) As ActionResult End Function I would like to 'provide' obj to the modelbinder. (i don't want the Modelbinder to use New() and instantiate obj, but I want to deliver the object from a custom repository.) Is this possible? Edit: The loading from the repository should be done based on the id parameter of EditObject...

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  • A typical lifecycle of a Hibernate object in a web app - ?

    - by EugeneP
    Describe please a typical lifecycle of a Hibernate object (that maps to a db table) in a web app. Suppose, you create a new instance of an object and persist in the db. But during the app lifetime you'll be working on a detached object and finally you need to update it in the database, for example on exit. How does it look like with hibernate and spring? p.s. Can transactions and sessions live between servlet transitions? So that we opened 1 session and use it in all servlets without a need to reopen it?

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  • contents().find() not producing the same result as changing selector context? - jQuery

    - by Alex
    Hello all, I have a function that looks somewhat like this: function(domObj) { var currentObj = $(domObj); ... currentObj.contents().find(".ws").after("foobar"); } My problem is that the above method of using .contents().find() is not working. "foobar" never gets stuffed after the specified dom element, represented by the selector, .ws However if I do this: $(".ws", currentObj).after("foobar"); Then the string, "foobar" gets appended every time. My question: Are not these two methods supposed to be equivilant? How/what am I doing wrong in my use of .contents().find() so that it is not working? Thanks!

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  • Create a custom button

    - by Beppi Menozzi
    Sorry if this is too basic. I created a new class that extends Button: public class MyButton extends Button { private Context ctx; public MyButton(Context context) { super(context); ctx = context; } private void click() { // DO WHAT I NEED (FOR EXAMPLE CHANGE BACKGROUND) } } How can make it possible that, when I setOnClickListener() from another class where I instantiated this object, the click() method is called automatically? Thanks.

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  • FWBuilder DNS Object Run Time - when exactly does it resolve the DNS name?

    - by Jakobud
    In Firewall Builder, when you use the DNS Object and set it to run time, when exactly does the firewall (iptables in our case) actually resolve the DNS name? Is it whenever a call is made to that DNS name in the firewall? So the firewall would resolve the name on the fly whenever someone/something tries to access that DNS name? Or is it when you execute the fw script to load the rules into iptables? So in this case, it would resolve the DNS name that one time and then hard-code the resulting ip address into the iptable rules? From what I read, I think its #1, but it's just not 100% clear to me. We have two servers for a certain function on our network. One is the primary server and one is backup. alpha0.domain.com alpha1.domain.com In DNS we have this: alpha.domain.com -> alpha0.domain.com If the primary server goes down and we need to switch to the backup, I just change our local DNS record to point to alpha1.domain.com instead. So back to the firewall, if I just put in a Domain Object as alpha.domain.com, do I have to reload the firewall rules every time we switch to the backup alpha server and change the DNS record? Or will the firewall automatically resolve to the correct address even after the switch?

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  • How to view / enumerate / obtain a list of all effective rights / permissions on an Active Directory object?

    - by Laura
    I am new to Server Fault and was hoping to find an answer to a question that I have been struggling with for the past week or so. I have been recently asked by my management to furnish a list of all the effective rights / permissions delegated on the Active Directory object for our Domain Admins group. I initially figured I'd use the Effective Permissions Tab in Active Directory Users and Computers but had two problems with it. The first was that it doesn't seem very accurate and the second was that it requires me to enter the name of a specific user, and it only shows me what it figures are effective permissions for that user. Now, we have more than a 1000 users in our environment so there's no way I can possibly enter 1000 user names one by one. Plus, there is no way to export that information either. I also looked at dsacls from MS but it doesn't do effective permissions. Someone pointed me to a tool called ADUCAdmin but that seems to falsely claim to do effective permissions. Could someone kindly help me find a way to obtain this listing? Basically, I need to generate a list of all the modify effective permissions granted on the Domain Admins group object along with the list of all the admins to which these permissions are granted. In case it helps, I don't need a fancy listing - simple text / CSV output would be enough I would be grateful for any assistance since this is time and security sensitive for us.

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  • Draw a Custom cell for tableview ( uitableview ) , with changed colors and separator color and width

    - by Madhup
    Hi, I want to draw the background of a UITableViewCell which has a grouped style. The problem with me is I am not able to call the -(void)drawRect:(CGRect)rect or I think it should be called programmatically... I have taken code from following link . http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view/1031593#1031593 // // CustomCellBackgroundView.h // // Created by Mike Akers on 11/21/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> typedef enum { CustomCellBackgroundViewPositionTop, CustomCellBackgroundViewPositionMiddle, CustomCellBackgroundViewPositionBottom, CustomCellBackgroundViewPositionSingle } CustomCellBackgroundViewPosition; @interface CustomCellBackgroundView : UIView { UIColor *borderColor; UIColor *fillColor; CustomCellBackgroundViewPosition position; } @property(nonatomic, retain) UIColor *borderColor, *fillColor; @property(nonatomic) CustomCellBackgroundViewPosition position; @end // // CustomCellBackgroundView.m // // Created by Mike Akers on 11/21/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import "CustomCellBackgroundView.h" static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,float ovalHeight); @implementation CustomCellBackgroundView @synthesize borderColor, fillColor, position; - (BOOL) isOpaque { return NO; } - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { // Initialization code } return self; } - (void)drawRect:(CGRect)rect { // Drawing code CGContextRef c = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(c, [fillColor CGColor]); CGContextSetStrokeColorWithColor(c, [borderColor CGColor]); CGContextSetLineWidth(c, 2.0); if (position == CustomCellBackgroundViewPositionTop) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny + 1; maxx = maxx - 1; maxy = maxy ; CGContextMoveToPoint(c, minx, maxy); CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, miny, maxx, maxy, ROUND_SIZE); CGContextAddLineToPoint(c, maxx, maxy); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionBottom) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny ; maxx = maxx - 1; maxy = maxy - 1; CGContextMoveToPoint(c, minx, miny); CGContextAddArcToPoint(c, minx, maxy, midx, maxy, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, maxy, maxx, miny, ROUND_SIZE); CGContextAddLineToPoint(c, maxx, miny); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionMiddle) { CGFloat minx = CGRectGetMinX(rect) , maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny ; maxx = maxx - 1; maxy = maxy ; CGContextMoveToPoint(c, minx, miny); CGContextAddLineToPoint(c, maxx, miny); CGContextAddLineToPoint(c, maxx, maxy); CGContextAddLineToPoint(c, minx, maxy); CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionSingle) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , midy = CGRectGetMidY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny + 1; maxx = maxx - 1; maxy = maxy - 1; CGContextMoveToPoint(c, minx, midy); CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, miny, maxx, midy, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, maxy, midx, maxy, ROUND_SIZE); CGContextAddArcToPoint(c, minx, maxy, minx, midy, ROUND_SIZE); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } } - (void)dealloc { [borderColor release]; [fillColor release]; [super dealloc]; } @end static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,float ovalHeight) { float fw, fh; if (ovalWidth == 0 || ovalHeight == 0) {// 1 CGContextAddRect(context, rect); return; } CGContextSaveGState(context);// 2 CGContextTranslateCTM (context, CGRectGetMinX(rect),// 3 CGRectGetMinY(rect)); CGContextScaleCTM (context, ovalWidth, ovalHeight);// 4 fw = CGRectGetWidth (rect) / ovalWidth;// 5 fh = CGRectGetHeight (rect) / ovalHeight;// 6 CGContextMoveToPoint(context, fw, fh/2); // 7 CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1);// 8 CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1);// 9 CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1);// 10 CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // 11 CGContextClosePath(context);// 12 CGContextRestoreGState(context);// 13 } but the problem is my drawRect is not getting called automatically......... I am doing it like this. CustomCellBackgroundView *custView = [[CustomCellBackgroundView alloc] initWithFrame:CGRectMake(0,0,320,44)]; [cell setBackgroundView:custView]; [custView release]; and doing this gives me transparent cell. I tried and fought with code but could get any results. Please help me out. I am really having no idea how this code will run.

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