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  • C++ parent class alignment

    - by aaa
    hello. Is it possible to specify alignment of parent class? for example something like (which does not compiled): template<size_t n> class Vector : public boost::array<double,n> __attribute__ ((aligned(16))) { thanks

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  • Flickering Image in Java?

    - by Noah Cagle
    OK so I am coding a game right now to prepair for Ludum Dare SharkJam, and I am using a new method for programming, because the last method I had crashes my PC, so this one should work. Well it does work and all, better too, but the images that I put in it flicker. Here is the whole main class (where the images are drawn) package me.NoahCagle.watermaze; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.image.BufferedImage; import javax.swing.JFrame; import me.NoahCagle.watermaze.entity.EntityShark; import me.NoahCagle.watermaze.entity.Player; import me.NoahCagle.watermaze.input.Keys; import me.NoahCagle.watermaze.map.Map; public class Game extends JFrame { private static final long serialVersionUID = 1L; Map map = new Map(0, 0); Player player = new Player(50, 30); static EntityShark shark = new EntityShark(400, 400); public Image dbImage; public Game() { setSize(800, 600); setDefaultCloseOperation(EXIT_ON_CLOSE); setLocationRelativeTo(null); setVisible(true); setTitle("Water Maze"); setResizable(false); setBackground(Color.blue); addKeyListener(new Keys()); } public static void main(String[] args) { new Game(); Thread s = new Thread(shark); s.start(); } public void paint(Graphics g) { dbImage = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_RGB); g.drawImage(dbImage, map.x, map.y, null); g.drawImage(player.player, player.x, player.y, this); g.drawImage(shark.shark, shark.x, shark.y, this); repaint(); } } What this code does for me is makes the Images work correctly, just flickering, alot. Can anyone help me with my issue? EDIT: I think it has something to do with where I call the repaint method in the paint method, so look there.

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  • how to get all 'username' from my model 'MyUser' on google-app-engine ..

    - by zjm1126
    my model is : class MyUser(db.Model): user = db.UserProperty() password = db.StringProperty(default=UNUSABLE_PASSWORD) email = db.StringProperty() nickname = db.StringProperty(indexed=False) and my method which want to get all username is : s=[] a=MyUser.all().fetch(10000) for i in a: s.append(i.username) and the error is : AttributeError: 'MyUser' object has no attribute 'username' so how can i get all 'username', which is the simplest way . thanks

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  • export gridview data

    - by Eric
    What is the best way to export a gridview into an Excel spreadsheet? This seems easy except that my Gridview doesn't have an export attribute. What is the quickest way to do this?

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  • Hint to MVC view generator for primary key on POCOs

    - by myotherme
    When generating a strongly-typed Index view for my model I always get the following: <%= Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) %> I am using a POCO class for use with our ORM. As I understand it when using LINQ to SQL the view code will know which field is the primary key. Is there a way that I can an attribute to the property (or class) that will let the View Generator know that the ID property if the primary key?

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  • red5: how can i extend ISharedObject ?

    - by ufk
    Hiya. Red5 uses ISharedObject interface to create shared objects and to operate them. because ISharedObject is an interface I'm having issues extending it. I would like to extend the getAttribute, setAttribute, get{Int/String/Map}Attribute so the values will be checked before entered or pulled out. how is it possible to do so ? thanks

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  • java RSA Multiple Encryption

    - by user1763730
    I encrypt my message with a symmetric key and the symmetric key itself has to be further encrypted with different RSA public keys. When I tried to implement the above I got the following error: javax.crypto.IllegalBlockSizeException: The input was invalid: Invalid input length. at com.rsa.shareCrypto.j.hD.engineDoFinal(Unknown Source) at javax.crypto.Cipher.doFinal(Cipher.java:2087) at wrap1.main(wrap1.java:69) Is there a way to solve this problem ?

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  • How to get attributes of container in jquery ?

    - by Rachel
    How can I get attributes values from an container using jquery ? For example: I have container div as: div id = "zone-3a-2f-2f-2fPortal-2fPages-2fHome-2fZones-2fLeft-2f-7ccomponent-3a-2f-2f-2fSpm-2fComponents-2fPromotion-2f" class = "promotion" here how can I get attribute id value using jquery and than how can I trim the value to get component information ? Thanks.

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  • How to automatically reseed after using identity_insert?

    - by Earlz
    Hello, I recently migrated from a PostgreSQL database to a SQL Server database. To switch the data over I had to enable IDENTITY_INSERT. Well come to find out that I get all sorts of strange errors due to duplicate identity values(which are set as primary keys) upon doing an insert in any of the tables. I have quite a few tables. What would be the easiest way of automatically reseeding the identity of every table so that it is after max(RID)?

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  • named anchors not working in safari

    - by David
    Hi there, can anyone explain why named anchor tags would not work in safari but work fine in other browsers: ie, ff, opera, chrome. I have some links to different areas of the same page and nothing happens when clicking on them in safari only. All the other browsers mentioned take me to that area of the page. I have tried using both the id and the name attribute for the anchors but neither makes any difference.

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  • Adding a LIKE criteria to a Rails Conditions block

    - by Neil Middleton
    Consider the following code which is to be thrown at an AR find: conditions = [] conditions[:age] = params[:age] if params[:age].present? conditions[:gender] = params[:gender] if params[:gender].present? I need to add another condition which is a LIKE criteria on a 'profile' attribute. How can I do this, as obviously a LIKE is usually done via an array, not a hash key.

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  • Animate css attributes: set "bottom" and remove "top"

    - by Slevin
    I'm working on a few animations with jQuery. I have 3-4 elements which should slide in from the top. I defined their positions with css: #element-1 { top:124px; left:0px; right:auto; bottom:auto; } #element-2 { top:230px; left:670px; right:auto; bottom:auto; } #element-3 { top:auto; left:0px; right:auto; bottom:100px; } Then I save their positions initial on pageload, cause i have to manipulate the css value to top: -1000px to hide them and make the "slide in from top" animation possible. var image_margins = []; $('img').each(function() { var obj = $(this), id = obj.attr('id'), mtop = obj.css('top'), mleft = obj.css('left'), mright = obj.css('right'), mbottom = obj.css('bottom'); // save alle margins in array image_margins[id] = {mtop:mtop,mleft:mleft,mright:mright,mbottom:mbottom}; // hide all content elements obj.css({'top':'-1000px'}); }); When the user clicks the animate button, the elements should slide to their saved positions. The problem: i can't remove the top attribute. Some elements only have bottom margins. I tried to set top to auto or '', but it's always 0px in DOM inspector. And bottom don't work if top is set. How can i get rid of the top attribute? $('.button').click(function(){ $('img').each(function() { var image = $(this), id = image.attr('id'), timeout = 0; setTimeout(function() { var mtop, mleft, mright, mbottom; if (image_margins[id].mtop != 'auto') { mtop = image_margins[id].mtop; } else { mtop = ''; } if (image_margins[id].mleft != 'auto') { mleft = image_margins[id].mleft; } else { mleft = ''; } if (image_margins[id].mright != 'auto') { mright = image_margins[id].mright; } else { mright = ''; } if (image_margins[id].mbottom != 'auto') { mbottom = image_margins[id].mbottom; } else { mbottom = ''; } image.animate({'top':mtop,'left':mleft,'right':mright,'bottom':mbottom},500); },timeout); timeout = timeout + 200; }); });

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  • Reversed Sorted Dictionary?

    - by Mark
    I have a SortedDictionary as defined like this: SortedDictionary<TPriority, Queue<TValue>> dict; But I want to sort the keys in reverse order. I assume I need set the Comparer, but what comparer do I use for a generic TPriority? Note that TPriority implements IComparable.

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  • Why Isn't My .Net Object Serializable?

    - by Rob P.
    I've got a 'MyDataTable' class that inherits from System.Data.DataTable I've implemented ISerializable in my class and have a 'Public Overrides Sub GetObjectData...' But when I try to serialize the an object of 'MyDataTable' I get an error saying that 'MyDataTable' is not marked as serializable. If I used a DataTable instead - my code serializes correctly. If I add a serializable attribute to the 'MyDataTable' class - it serializes correctly, but I'm told that is unnecessary if I implement ISerializable. Can someone point me in the right direction?

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  • Relational Database arrays (H2, Java)

    - by Daddy Warbox
    I seem to have two options on how to implement arrays, and I want to know which I should go with: Use the ARRAY data type and (from what I understand) effectively serialize data objects into the database (which in my case are just wrapped primitive types; don't know of another way to make this work). Use a separate table and map with foreign keys for each array item. If you have experience with this (especially with H2), which would you recommend?

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