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• How to calculate point along a curve?

  - by Nicros

  I am writing a custom animation for wpf and as a non math guy I have a couple questions... If I am given two Point3D's, the From and To, and assuming the origin is at 0,0,0 how do I calculate a curve between the two points? And once I have the curve 'plotted' and I know its length (how to do that too?) how can I calculate the x,y,z coords at some given distance along the line? Thanks!

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• What does this construct mean?

  - by ArneRie

  Iam debugging some javascript, and cant explain what this "||" does? loadingError: function(title, msg){ var title = title || 'Error'; var msg = msg || 'Error on Request'; new my.widget.InformationBox({ title: title, message: msg, type: 'error' }).show(); } Can someone give me an hint, why this guy is using var title = title || 'ERROR' ??

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• Attaching a link to back button in php

  - by Prasoon Saurav

  Is there any way by which I can attach the back button of my browser to any particular link? Actually I am designing a login page in PHP. After login I want the back button of my browser to open any particular page that I want, how can I do that in PHP? Actually I am not a PHP guy, so my question might sound silly to some. :P

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• Is it considered rude to use commits as comments in SCM's.

  - by Alex

  For example in git you could do git commit --allow-empty -m"I like what this guy did" I was considering using commits as a commenting system, and I just wanted to see how that would go over.

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• What is the carriage return character in an AS/400 db?

  - by donde

  I have a client running an AS/400. I have to ftp a flat file over to them. They tell me their return charaters are RN. I don't recognize this, could not find anything on it, and their tech guy is Nick Burns so he refuses to give me any dirtection. Is there a standard return code for AS/400? I should have mentioned that I have a c# .NET 2.0 console application.

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• If I were a girl, and I also spoke computer-science, give me an interesting, difficult computer-scie

  - by alex

  I'm a girl. You're a guy. You need to give me an interesting riddle (or flirty question) that is related to computer-science for me to guess. By the way, I have a masters from Stanford. Example: If Python is C++, C++ is JAVA, and PHP is returning None. What is PHP(Python(PHP))?

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• adding a dll to a VS 2008 Win32 application

  - by Ayusman

  Hi, I have created a project VC++ in VS 2008. I want to call a certain function in an external dll. How can I add the reference/resource [I am a java guy please forgive if I am using the wrong terms here] to my project so that I can call the functions in the dll. I have gone through several forums and yet have not found a clear solution. Please help. TIA Ayusman

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• Avoid writing SQL queries altogether in SSIS

  - by Jonn

  Working on a Data Warehouse project, the guy that gave us the tutorial advised that we stick to using SQL queries over defining a lot of data flow transformations, citing points like it'll consume a lot of memory on the ETL box so we'd rather leave the processing to the DB box. Is this really advisable? Where's the balance between relying on GUI tools over executing a bunch of SQL scripts on your Integration package? And honestly, I'd like to avoid writing SQL queries as much as I can.

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• How do I do a webkit transformation "onload" instead of pre-load?

  - by Matt Everson

  I'd like to do a webkit transformation (rotate an image, specifically) after the page loads rather than getting it pre-rotated at load. I'm guessing I need to use some sort of "onload" event to apply it or something, but I'm not a javascript guy.

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• packaging and distributing Python code as executables

  - by user248237

  How can I compile my python module into an executable, and distribute it in a way that doesn't require the user to download all the external Python packages that the module I wrote uses? Aside from that, is there a general guy on packaging and distributing python code? i.e. going from a script/module to someone that's user-friendly and can be run, ideally cross-platform (at least between unix and mac). thanks.

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• List of valid characters for the fragment identifier in an URL?

  - by sohtimsso1970

  I'm using the fragment identifier to create a permalink for AJAX events in my web app similar to this guy. Something like: http://www.myapp.com/calendar#filter:year/2010/month/5 I've done quite a bit of searching but can't find a list of valid characters for the fragment idenitifer. The W3C spec doesn't offer anything. Do I need to encode the characters the same as the URL in has in general? There doesn't seem to be any good information on this anywhere.

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• How do I create a dll project with Eclipse Ganymede?

  - by MRFerocius

  Guys; How are you doing today? I have to create a dll project on Eclipse Ganymede and I don´t know where to start... (I am a C# guy with VS). Can you please indicate me what type of project should I create to make a dll on Eclipse Ganymede so I can call the DLL from other Java Project? Thanks in advanced :D

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• Selecting all but one field?

  - by gsquare567

  instead of SELECT * FROM mytable, i would like to select all fields EXCEPT one (namely, the 'serialized' field, which stores a serialized object). this is because i think that losing that field will speed up my query by a lot. however, i have so many fields and am quite the lazy guy. is there a way to say... `SELECT ALL_ROWS_EXCEPT(serialized) FROM mytable` ? thanks!

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• When are child views added to Layout/ViewGroup from XML

  - by JohnTube

  My question is : I want to know when does a xLayout (or ViewGroup in general) add a child view from XML ? And by "when" I mean at what point of code, in what "pass" of the "traversal" of the UI toolkit ? Which method of xLayout or ViewGroup should I override ? I have done my homework : I have watched the "Writing Custom Views For Android" presented (by Adam Powell and Romain Guy) in the last Google I/O and I have read Adam Powell comments on this Google+ post.

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• What kind of routes could I get back from kAudioSessionProperty_AudioRoute property?

  - by mystify

  Apple guy tried to be funny and wrote in the docs: ("Headphone," "Speaker," etc.) What kind of return values are possible in reality?

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• how can we avoid allocation done by Marshal::StringToHGlobalAnsi?

  - by KaluSingh Gabbar

  my wrapper from managed to unmanaged is handling a lot of data and this Guy would call new for each of them, which is a big hit for me. So my question is : can I allocate a chunk of unmanaged memory and use it to convert the managed data types to unmanaged by hand.

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• How can I know where a Null Pointer Exception originated?

  - by navand

  I had a problem making a Blackberry app. I found some guy who made a tutorial which did what I attempted with mine. I copied the code of the tutorial's app to try and recreate it, just to see it in action. The result: Null Pointer Exception. I want to know what is triggering this. How can I?

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• Iphone apps development.

  - by dicaprio

  I'm very keen to learn Iphone apps development. Can you experts give me some tips as to which programing tool I should learn? tools I should install [of course , I prefer free tools]?, operating system I need? [I only have windows xp and unix flavours on my Personal laptop]. Do I need to have Iphone to test my apps? [poor guy, I don't own a Iphone].

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• Camera and Image recognition

  - by kjh

  I recently watched a youtube video where a guy got a camera to recognize when a rubik's cube was held up to it, and it captured the 9 square color combination before snapping a picture of the cube and displaying the 3x3 grid on the screen of his computer. What kind of programming is this and where would I start reading to get into this sort of thing? specifically, controlling a camera, and getting it to pick out certain parts of an image and translate that data.

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• Is there a way to accumulate a commit message with git while examing changes?

  - by carleeto

  I use "git add -p" to stage my changes. What I'd like to be able to do is to accumulate a commit message as I'm examining my changes and then when I call "git commit", it is already filled out for me and allows me to make changes before I commit. Now, its easy to do with git gui by simply examining the changes and editing the commit message text box accordingly, but I'm a command line guy and was wondering if this is possible at the command line.

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• MySQL: selecting all but one field?

  - by gsquare567

  instead of SELECT * FROM mytable, i would like to select all fields EXCEPT one (namely, the 'serialized' field, which stores a serialized object). this is because i think that losing that field will speed up my query by a lot. however, i have so many fields and am quite the lazy guy. is there a way to say... `SELECT ALL_ROWS_EXCEPT(serialized) FROM mytable` ? thanks!

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• Facebook API email notification when a user post

  - by Kiva

  Hi guy, I create a group on facebook and I would like to know how I can send me a email when a user post on the group wall. I search on facebook api but I found nohting. Thanks for your help.

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• What does ZIP stand for (the compression format, not the postal codes)

  - by codymanix

  Does anybody know for what the acronym ZIP stands for which was and is used in programs like PKZIP and GZIP? There is a compression algorithm named Lempel-Ziv-Welch-Algorithm (LZW) maybe the guy named Ziv invented together with other people ZIP? I cannot find anything about it, maybe its not an abbreviation but instead it just means "to zip files" but I think originally there was more about it..

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• How to use type: "POST" in jsonp ajax call

  - by MKS

  Hi Guy, I am using JQuery ajax jsonp. I have got below JQuery Code: $.ajax({ type:"GET", url: "Login.aspx", // Send the login info to this page data: str, dataType: "jsonp", timeout: 200000, jsonp:"skywardDetails", success: function(result) { // Show 'Submit' Button $('#loginButton').show(); // Hide Gif Spinning Rotator $('#ajaxloading').hide(); } }); The above code is working fine, I just want to send the request as "POST" instead of "GET", Please suggest how can I achieve this. Thanks

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• Explain Type Classes in Haskell

  - by Tsubasa Gomamoto

  Hi, I am a C++ / Java programmer and the main paradigm I happen to use in everyday programming is OOP. In some thread I read a comment that Type classes are more intuitive in nature than OOP. Can someone explain the concept of type classes in simple words so that an OOP guy like me can understand it?

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