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• Generics : List<? extends Animal> is same as List<Animal>?

  - by peakit

  Hi, I am just trying to understand the extends keyword in Java Generics. List<? extends Animal> means we can stuff any object in the List which IS A Animal then won't the following also mean the same thing: List<Animal> Can someone help me know the difference between the above two? To me extends just sound redundant here. Thanks!

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• (RightAws::AwsError) AccessDenied: Access to the resource

  - by ming yeow

  I get a lot of these errors, but do not know what they mean, and what they stand for. Anyone has any idea?

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• Why does Java uses heap for memory allocation?

  - by happysoul

  I just read this statement in a java book saying Objects in java reside on a heap. Is a heap used because it is the best way to store data and retrieve data fast ? I only have an idea about data structures being a beginner. I mean why not stack or something else ?

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• Where a developer can sell / donate his time?

  - by kyrisu

  Recently business isn't good and was wondering what are your favourite places where you can sell your time working on a projects (you get specification / idea - you crank code - you get paid :) ) (I don't mean selling your own apps, just working for someone else) or where you can donate your time (you get specification - you crank code - you feel good :D) (I've heard about cranking code on weekends for charities in US but I'm from Poland so I was thinking about something not location specific)

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• CSS: content:"\00a0"

  - by SteD

  Today I came across a new CSS syntax that I have never seen before content:"\00a0"; Checking it on w3schools, it explains: Definition and Usage The content property is used with the :before and :after pseudo-elements, to insert generated content. My question is, can you point out to me in real world example, how do we use this 'content' syntax? And what does the \00a0 mean in this case?

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• Does Zend application server provide any sort of pushed-based messaging architecture support?

  - by Alex

  Does Zend application server provide any sort of pushed-based messaging architecture support?I mean some different message-oriented middlewares that can be used for the push-based architecture or email support?There is a need in provision of the non web-based interface for certain users of the website who would get regular messages notifying them of different special offers in their field of interest(it should be push-based)

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• Is it possible for navigation based application to switch to any other orientation mode?

  - by Rajendra Bhole

  Hi, My application is completely navigation based and my query is that navigation based application can switch to any mode i mean orientation to portrait to landscape. Please help me out Thanks in advance

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• Help decoding MSDN Dynamic Data Article

  - by davemackey

  I'm trying to run through this msdn article: http://msdn.microsoft.com/en-us/library/dd723645.aspx One of the steps is: In the class file for the page, change the base class from UserControl to EntityTemplateUserControl. Nowhere is it made clear what page is being referenced. Can someone help me? I don't see any relevant class in the pages I have, so I assumed maybe they were talking about the ascx and didn't really mean page, but I'm not seeing an option there either.

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• SQL Server insert slow

  - by andrew007

  Hi, I have two servers where I installed SQL Server 2008 Production: RAID 1 on SCSI disks Test: IDE disk When I try to execute a script with about 35.000 inserts, on the test server I need 30 sec and instead on the production server more than 2 min! Does anybody know why such difference? I mean, the DB is configured in the same way and the production server has also a RAID config, a better processor and memory... THANKS!

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• Reading a subset of the lines in a text file, with bash

  - by Markus

  Hi! I have a file line a - this is line a line b - this is line b line c - this is line c line d - this is line d line e - this is line e The question is: How can I output the lines starting from "line b" till "line d" using bash commands? I mean, to obtain: "line b - this is line b line c - this is line c line d - this is line d"

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• Best way to get a query result

  - by xgoan

  I'm developing an application that gets large images from an Internet server which is the best way to download this images, without freeze the entire application? I mean background download. I have thought about download it in another thread.

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• What's the best way to tell if the mouse is over a form or not?

  - by cyclotis04

  I figured out how to capture mouse clicks over the entire form, but this method doesn't translate well for MouseEnter and MouseLeave. My form layout is made up from many Panels and TableLayoutPanels so there's no all-encompassing control I can monitor events for, and obviously a MouseLeave event for a button doesn't mean the cursor left the entire form. Has anyone figured out a good way to get around this?

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• Can I assign test result to a boolean variable in Java?

  - by derrdji

  When I write boolean bool = aString.indexOf(subString) != -1 Eclipse did not complain, does it mean that it is the same as boolean bool = aString.indexOf(subString) != -1 ? true : false?

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• Pause the log4c++ logger

  - by chedi

  Hi, is it possible to pause the logger in log4c++, and by pause I mean to stop writing messages in the log file but not finalize the logger object or delete it. thanks in advance

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• how to highlight text on hover

  - by herpderp

  By highlight I mean the thing you do to text when you drag your mouse over it. If you use imgur.com then you know what I want. I can't find anything about this anywhere, it's frustrating. help?

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• UIbutton stretchable

  - by mindfreak

  I have 2 images for UIbutton (1 for normal state and 1 for highlited state). When the button is highlited the height of button increases(as per image size) . I want that height of button should increase only from top and not from bottom. I mean it should stretch from top .is it possible ? if yes ,how ?

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• What does this line of code do? Really strange.

  - by Sergio Tapia

  What does this C# code mean. First time seeing it. btnOK.Enabled = txtNick.Text.Length > 0 ? true : false;

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• Where is the action listener registered?

  - by Summer_More_More_Tea

  Hi there: I come across this problem when referring a piece of javascript code: <a href="javascript:void(0);"><!-- other html elements --></a> It want to register a mouse click event listener on this anchor, but I cannot find which function is registered. What's more, what does the code href="javascript:void(0);" mean? Thanks in advance!

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• graphic imaginary numbers with vb.net

  - by every_answer_gets_a_point

  anyone have experience doing this? when i say imaginary i mean the square root of negative one. how would i graph this?

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• Separate tables for just one field can be logical ?

  - by Freshblood

  If I have one table which has a City field and as expected this field will repeat itself so only separate it to another table can be ok for normalizing concepts? I mean separated table who has only one field can be meaningful and can help performance gaining?

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• Which comes first: database or application logic ?

  - by Zai

  What is the best way or recommended best practice in the flow of database driven asp.net web application? I mean the database first or coding first or side by side?

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• Is there any good tutorials to convert HTML+ CSS to wordpress?

  - by metal-gear-solid

  Is there any good tutorials to convert HTML+ CSS to wordpress? not PSD 2 HTML? I mean if HTML CSS is available wejust need to convert a XHTML CSS template to installable Wordpress 3.0 Theme? I'm not talking about PSD 2 HTML. For example this is free CSS template http://www.freecsstemplates.org/preview/regeneracy/ I just want to download it and convert this css template into Wordpress 3.0 installable theme.

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• what is the best prgoram for arrangying codes?

  - by hd

  i need a program that make my php and html codes tidy.i mean remove unnecessary spaces,tabs,newlines and ... . thanks for helping.

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• Best way: to implement an interrupt/cancel feature for all your threaded workers.

  - by Lukas Šalkauskas

  Hello there, So my question is how to implement cancel/interrupt feature into all (I mean ALL) thread workers in your application in best and most elegant way? It's not important if it's an HttpWebRequest, IO operation or calculation. User should have an possibility to cancel every action/thread at any moment.

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• Binding Bitmapimge to Image in Wpf?

  - by Rev

  This is a simple Question (lets see) I want to bind bitmap image to Image. For doing this in cs code u must write this line. this.leftImage.Source = new BitmapImage(new Uri(@"C:\a.bmp")); But I want make Binding from resources. Because In release time resources became part of project.exe file and if you make binding from file(Mean set Image.source with Image file address), you must always put image file in the same address(disaster programing) :)

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