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  • Can a JPEG compressed image be rotated without a loss in quality?

    - by Mat
    JPEG is a lossy compression scheme, so decompression-manipulation-recompression normally reduces the image quality further for each step. Is it possible to rotate a JPEG image without incurring further loss? From what little I know of the JPEG algorithm, it naively seems possible to avoid further loss with a bit of effort. Which common image manipulation programs (e.g. GIMP, Paint Shop Pro, Windows Photo Gallery) and graphic libraries cause quality loss when performing a rotation and which don't?

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  • are there any good timer implementation in perl

    - by Haiyuan Zhang
    I'm looking for good timer implementation in perl. The situation I met is like: I need to keep track of I/O activities of many files and for thoes files keep untouched for enough time a remove action will be taken upon them, so an efficient timer implementation is really vital for the app I'm involved right now. To avoid recreate the wheel, ask you guys for help first.

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  • TSQL Writing into a Temporary Table from Dynamic SQL

    - by Jeff
    Consider the following code: SET @SQL1 = 'SELECT * INTO #temp WHERE ...' exec(@SQL1) SELECT * from #temp (this line throws an error that #temp doesn't exist) Apparently this is because the exec command spins off a separate session and #temp is local to that session. I can use a global temporary table ##temp, but then I have to come up with a naming scheme to avoid collisions. What do you all recommend?

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  • Is it possible to make ListView display a text obtained through its ListViewItem.Tag?

    - by Dimitri C.
    I'd like to fill System.Windows.Forms.ListView with the items I've stored in a separate System.Collections.Generics.List<. I would like to avoid to store the data twice, once in the List< and once as a string in ListViewItem. Is there a way to make ListViewItem use some callback function to obtain the text to put in its columns from the Tag property, instead of using its Text property?

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  • How to find "\r" in a conditional?

    - by Werner
    Hi, in a C++ program some string reads info from file, and in some part contains a "\r" character. I need to remove it, afte the read, in order to avoid problems. I thought about comparing strings character to character, I thought that "\r" would take two chars, but not, it is just one. how would i use a conditional ? if char[4]==`\r' ??? Thanks P.D. How would the problem be solved in C?

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  • Multi color Edit Field (Win32)

    - by user146780
    I want to create a program that will parse text for key words and make these words a certain color. What type of control supports many different colors? Would I have to create my own, or override the OnPaint() of a basic control or something? (Id like to avoid making my own control from scratch) Thanks

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  • Optimizing / simplifying a path

    - by user146780
    Say I have a path with 150 nodes / verticies. How could I simplify if so that for example a straight line with 3 verticies, would remove the middle one since it does nothing to add to the path. Also how could I avoid destroying sharp corners? And how could I remove tiny variations and have smooth curves remaining. Thanks

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  • VirtualStringTree hide node(s)

    - by michal
    Hi, is that possible to hide specific nodes in VirtualStringTree? I'm implementing "filtering" feature (the VST acts as a list with columns), and I'd like to avoid reloading content each time the filter is changed - instead, much faster would be to tell VST not to render specific items ... any solutions?

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  • Inheritance question / problem

    - by Itsik
    I'm creating a custom Layout for android. The layout implementation is exactly the same, but once I need to extend from RelativeLayout, and once from LinearLayout. class Layout1 extends LinearLayout { // methods and fields } class Layout2 extends RelativeLayout { // the same EXACT methods and fields } How can I use inheritance to avoid DRY and implement my methods once.

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  • Source From Standard In (Bash on OSX)

    - by yar
    I am trying to do something like this ruby test.rb | source /dev/stdin where test.rb just prints out cd /. There are no errors, but it doesn't do anything either. If I use this: ruby test.rb > /eraseme; source /eraseme it works fine, but I want to avoid the intermediate file.

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  • File Uploading inWeb pages

    - by Jibu P C_Adoor
    Hii, Any one knows how to upload files to the physical location of the server. It is possible using file upload control that i know. But i want to avoid the external postbacking of the page. For e.g exactly like what in the yahoo mail did. In yahoo mail latest version if you attach a file that won't post back and attach that file in to server. What is the technology behind that?

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  • Javascript using asp.net

    - by jimson
    I have a Login Page Contains two text boxes one is user name,password and one button if the two textboxes are empty that time how i can avoid post back of the buuton if any value enterd that time only postback occuers,,,, not using required fiekd validator any method is avilable in javascript.......

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  • Factory(:user) hits database?

    - by davidegp
    Playing around with factories, which I read weren't supposed to hit the database, allowing you to avoid having your controller specs interacting with the DB. But when I fire up the Rails console in test and use a factory to create a sample user, I noticed an actual user gets created in the database. Huh? (Using Rails 2.3.8 and Factory Girl 1.2.3.)

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