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• Can I upgrade Xcode to support a newer version of GCC to learn C++0x?

  - by Shane

  I would like to jump in learn C++0x, which has matured to a level I'm happy with. Xcode on Snow Leopard 10.6 is currently at GCC 4.2.1, and the new features I'd like to try, like std::shared_ptr, lambdas, auto, null pointer constant, unicode string literals, and other bits and pieces, require at least 4.3 (I believe). Ideally I'd use Xcode but I'm not even sure if you can manually upgrade the compiler for Xcode. Is this possible? Otherwise, what is the best way to install a different version of GCC that doesn't interfere with the rest of the system? Regards, Shane

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• Install multiple iPhone apps at once from Xcode to device

  - by Dimitris

  Supposing we have an Xcode iPhone project with 2 targets, is it possible to build and install both of them on the device with one click? Of course, I understand we will not be able to "build and run" both, but can we at least install them? And to extend this concept a bit a bit: are there any scripts to achieve the same thing but with multiple iPhone projects instead of multiple targets in one project? This would be useful when you want to load all your apps on a new development device and don't want to go through all your projects one by one and install.

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• How prevalent is the use of Emacs' eshell in multi-platform development?

  - by pajato0

  I've only recently become aware of Emacs' eshell tool. It looks quite powerful in that it is entirely written in Emacs Lisp and does not require native subshell support. The Emacs info documentation is a bit sparse but EmacsWiki has pretty decent information, at least on a first glance. Given the potential value of eshell as a scripting tool/programmer's aid that works equally well on multiple platforms I'm wondering how prevalent the use of eshell versus the normal (bash) shell is among software developers. Would those of you who have taken the time to learn it recommend it or is it one of those many interesting ideas that did not really pan out?

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• What relational database innovations have there been in the last 10 years

  - by Simon Munro

  The SQL implementation of relational databases has been around in their current form for something like 25 years (since System R and Ingres). Even the main (loosely adhered to) standard is ANSI-92 (although there were later updates) is a good 15 years old. What innovations can you think of with SQL based databases in the last ten years or so. I am specifically excluding OLAP, Columnar and other non-relational (or at least non SQL) innovations. I also want to exclude 'application server' type features and bundling (like reporting tools) Although the basic approach has remained fairly static, I can think of: Availability Ability to handle larger sets of data Ease of maintenance and configuration Support for more advanced data types (blob, xml, unicode etc) Any others that you can think of?

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• OpenID on Google not returning anything

  - by PlayKid

  Hi there, For some reason, the following code does not return anything: string alias = response.FriendlyIdentifierForDisplay; var sreg = response.GetExtension<ClaimsResponse>(); if (sreg != null && sreg.MailAddress != null) { alias = sreg.MailAddress.User; } if (sreg != null && !string.IsNullOrEmpty(sreg.Email)) { alias = sreg.Email; } if (sreg != null && !string.IsNullOrEmpty(sreg.FullName)) { alias = sreg.FullName; } I was hoping I can get the Email from Yahoo or Google, but sreg just return null whichever provider I have chosen. I saw some of other posts that this code should return an e-mail at least, but for me, it does not, please assist. Thanks alot

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• LaTeX: remove blank page after a \part or \chapter

  - by CaptSolo

  How to remove a blank page that gets added automatically after \part{} or \chapter{} in a book document class? I need to add some short text describing the \part. Adding some text after the part command results in at least 3 pages with an empty page between the part heading and the text: Part xx (empty) some text How to get rid of that empty page? P.S. Latex: How to remove blank pages coming between two chapters IN Appendix? is similar but it changes the behavior for the rest of the text while I need to remove the empty page for this one \part command only.

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• How is the iPhone SMS compose view implemented?

  - by erotsppa

  Regarding the SMS compose view as show in the picture below: I have two questions: 1) How is the text entry box implemented? There are no standard control from the API and the box is smart enough to resize when you press enter OR when the text is too long. Also the bar resizes with it. How is this done with the least coding? 2) How to code it such that when the keyboard shows up the whole view shifts up? Typically when the keyboard shows, it goes over your current view.

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• Extracting information from PDFs of research papers

  - by Christopher Gutteridge

  I need a mechanism for extracting bibliographic metadata from PDF documents, to save people entering it by hand or cut-and-pasting it. At the very least, the title and abstract. The list of authors and their affiliations would be good. Extracting out the references would be amazing. Ideally this would be an open source solution. The problem is that not all PDF's encode the text, and many which do fail to preserve the logical order of the text, so just doing pdf2text gives you line 1 of column 1, line 1 of column 2, line 2 of column 1 etc. I know there's a lot of libraries. It's identifying the abstract, title authors etc. on the document that I need to solve. This is never going to be possible every time, but 80% would save a lot of human effort.

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• Css editor with certain features

  - by user255408

  I need a light css editor with certain functions. Already downloaded and tried a few apps but still no luck, none of them fit my requirements. Actually, there is one, CssEdit (or TextMate), but unfortunately i'm a windows user... Already tried: built-in NetBeans IDE css editor (btw nice editor, the one i'm using now for css) IntelJ IDE (very good html and css editor, but using the entire ide just for this - that's crazy) ArduoCss (very buggy in win7 environment) Notepad Notepad++ (it rules, but as i said, i need something more functional for css editing) Style Master ( if i don't find anything else, probably i'll choose this one) Stylizer ( also might be my choice, but it's black interface kills me, also extremy noob-oriented, i even couldn't find a way to see the source code) Some of the features i am looking for: grouping by comments like here snippets autocomplete, if i type for instance f-s, it should recognize and expand it to "font-size" property color picker The editor must have at least the first feature that i listed above. Sorry for my poor english.

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• Version Control for developers new to source control

  - by Daisetsu

  I've been writing code for a few years now and our backup strategy has been to zip the entire code directory up every few days and put it somewhere else on your hard drive, or occasionally upload it to some online file hosting service. Unfortunately the file hosting service got canceled without telling me and we lost years of backups. It's come down to the point where I finally have to learn to use version control. The only problems are My boss really doesn't like SVN, he tried it and it had a high learning curve (at least his client). We need a reliable place to host it (we can pay a reasonable amount). Can someone suggest what may be the best version control system and client for a newbie which won't be too annoying. Second what is a good remote version control service?

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• Changing error message for datatype validation?

  - by Matthias

  Hey guys, I've a small question on ASP.NET MVC 2. I'm using Data Annotations on my Presentation Model and its model binder per default. But one step back, I want to do the most elementary thing: validation of the data type. Let's say I have an "int ID" on my model and want to edit the according entity in my view. If I enter something wrong like "foo", then I get a model error back, but the validation message is on English. I want to have this message in other languages, too. How can I do this? I remember that in MVC 1 I've written a custom model binder which checks the data types, but that's not what I want to do (at least not in MVC 2). Thus I hope there is a better way... Thanks, Matthias

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• White (Light) vs. Black (Dark) Backgrounds: Health Effects

  - by Hosam Aly

  I am adding a bounty to this question, hoping for some scientific research results. Thank you everybody! I have recently tried working on dark backgrounds, and it seemed (to me) to be easier on the eye. However, today I read Gerrie Schenck's comment on this answer, in which he said that mainframe developers were advised to use white backgrounds instead of black, as it is said that white is easier on the eye. So which one is actually better for the eyes in the long run? I would be thankful for any (scientific) references about the subject, as my eyes really need some relaxation. I wanted to make this question a community wiki, but I think that the least I can do to thank people is to reward their answers, so I'm leaving it as a normal question. Many, many thanks for your help. P.S. I don't know which tags would be appropriate for this question, so I'd be grateful if you could tag it in a better way than I did.

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• iPhone modalView unwanted offset

  - by Chonch

  Hey, I have a UITabBarController with three view controllers (from three different types). On one of the view controllers, I want to display a modalViewController. Once a UIButton on the screen is pressed, I perform this action: AboutViewController *modalViewController = [[AboutViewController alloc] initWithNibName:@"AboutScreen" bundle:nil]; [self presentModalViewController:modalViewController animated:YES]; like I always do in order to display a modal view... The problem is, that while the modal view is being displayed (while it is moving from the bottom of the screen), a 20 pixels grey strip is showing on the bottom of the screen (the same size as the status bar on the top). Once the modal view reaches its final location, the strip disappears. Needless to say this doesn't look good (to say the least). Does anybody know why this may happen? Thanks,

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• What's the right way to calculate derived data in a Flex AdvancedDataGrid using summaries?

  - by Chris R

  Here's the gist of the problem: I have a set of rows of data with (say) field1 to field4 in them. I'm using a GroupingCollection to group on field1 and field2. So, I have something like this: f1.1 f2.1 f3.1 f4.1 f3.2 f4.2 f2.2 f3.3 f4.3 f3.4 f4.4 f3.5 f4.5 f1.2 f2.1 f3.6 f4.6 f2.2 f3.7 f4.7 f3.8 f4.8 f3.9 f4.9 (or at least, I hope that's clear enough) I need to calculate some derived values for each leaf row, for example f3, that is the ratio of f3 to the average of all f3 in that particular part of the tree. So, for f3.7 I need to calculate f3.7 / avg(f3.7..f3.9) and fill that into the f3_index property on the row, displaying that in lieu of f3 itself. So, basically, what it looks like I have to do is add source field values in the summarizeFunction implementation. It seems to me that there must be a better way of doing this. Is there?

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• What is the best software to capture full-screen 3h programming session in Windows?

  - by Hugo S Ferreira

  Hi, I'm planning a laboratorial experiment to assess behavior of groups when programming using some tools under study. For that, I'll need to capture their entire screen to disk. Mostly, what will be displayed is code, so I'm not to worried with image quality. However, it's paramount that the team is not able to stop the recording by accident, and the tool should be rebust enough to hold at least 3h of video. If possible, it would be nice for researchers in other rooms to "watch" the video as it is recording. Actually, this last requirement reminded me that I could use a VNC recording software, and install a VNC client in each laboratory computer. Anyway, what is your experience with this? Which software do you recommend? Thanks.

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• Trouble using eval() with cython

  - by Peter Stewart

  I was trying to speed up some code, and then I tried compiling a class and a function using cython and WOW! I havn't measured it yet but it looks at least 10x faster. I first looked at cython just two days ago, I'm very impressed! However, I can't get eval() to work. def thefirst(int a): d = eval('1+2+a') return d I compile this to module1.pyd file and call it with the python file: from module1 import thefirst x = thefirst(2) print x This returns: NameError: name 'a' is not defined. All help is appreciated.

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• Changing the colour of \textbullet in LaTeX Beamer

  - by Seamus

  I don't want to use Beamer's standard blue colour theme. I want to use beaver, which is deep reds. Everything looks nice, except that if I use itemize the bullet points are still blue. Is there a nice way to have the bullets vary with what colour theme I was using? (If I were to opt for a yellowish colour theme, I'd expect the bullets to go yellow too.) If there isn't, what is the brute force way to change the bullet points red? Or at the very least, make them go back to black again.

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• Can I directly use JAVA-sourcecode directly in SCILAB, or Is there another way to connect both?

  - by Andreas Hornig

  Hi, a friend of mine uses SCILAB for doing his mathematicall "homework" for his studies and he told me, that it should be possible to use JAVA-sourcecode diretly in SCILAB. The background is that I presented my current JAVA project and I would like to plot this in 3d, but I haven't done graphical output so far. And he proposed to let SCILAB do the 3d plotting, because there are some ready to use plot scemes implented. But he couldn't tell me how to achive this, so that's why I'm here :). So my first question is, IF this is possible to directly use JAVA-Source code in SCILAB or at least to some kind of connection between both? And how this is done! :) Thank you in advance, Andreas

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• Discrete mathematics problem - Probability theory and counting

  - by Mohammad

  Hello All, I'm taking a discrete mathematics course, and I encountered a question and I need your help. I don't know if this is the right place for that though :) It says: Each user on a computer system has a password, which is six to eight characters long, where each character is an uppercase letter or a digit. Each password must contain at least one digit. How many possible passwords are there? The book solves this by adding the probabilities of having six,seven and eight characters long password. However, when he solves for probability of six characters he does this P6 = 36^6 - 26^6 and does P7 = 36^7 - 26^7 and P8 = 36^8 - 26^8 and then add them all I understand the solution, but my question is why doesn't calculating, P6 = 10*36^5 and the same for P7 and P8, work? 10 for the digit and 36 for the alphanumeric? Also, if anyone could give me another solution, other than the one in the book. Thank you very much :)

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• MSDN Subscription Site Down?

  - by Vaccano

  I am not sure that this is an SO worthy question. (At least it is not like ones I normally ask.) But I can't get my MSDN Subscription to work any more. Is anyone else having this issue? When I log in and select "My Account" I get this: and when I try to download I get this: I have asked other developers that I know and it is broken for them too. But before I go digging into this, it would be nice to know if this is a me/us issue or an everyone issue. Also, if I am breaking the rules by posting this here let me know and I will delete it. Thanks.

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• How to test a project with multiple python versions in a sequential way?

  - by ecolell

  I am developing a python adapter to interact with a 3rd party website, without any json or xml api (http://www.class.noaa.gov/). I have a problem when Travis CI run multiple python tests (of the The Travis CI Build Matrix) concurrently. The project is on GitHub at ecolell/noaaclass and the .travis.yml file is: language: python python: - "2.6" - "2.7" - "3.2" - "3.3" install: - "make deploy" script: "make test-coverage-travis-ci" #nosetests after_success: - "make test-coveralls" Specifically, I have a problem when at least 2 python versions were running their unit tests at the same time, because they use the same account of a website. Is there any option to specify to The Build Matrix the execution of each python version in a secuential way? Or maybe, Is there a better way to do this?

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• Where can I get resources for developing for Mac OS Classic?

  - by Benjamin Pollack

  I recently got bored and fired up my old Mac OS Classic emulator, and then got nostalgic for writing old-school applications for the system. So, my question: Where can I get dev tools that can still target Classic? (Ideally free, since this is just for fun, but if grabbing a used version of CodeWarrior on eBay is the best way to go, so be it.) Where can I get at least reference materials so I don't have to guess-and-check my way around Carbon/the System Toolbox? Are there any forums still running that would be open to answering old-school Mac questions for when I get stuck? This is purely for fun, so don't worry about how impractical this is. I know.

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• Simple .NET webcam library

  - by Vegard Larsen

  Is there a simple library for .NET that has a simply API that let's you do something like; // pseudo-code List<Webcam> cams = Webcam.GetAll(); Image i = cams[0].GrabImage(); I've looked at DirectShow and WIA, both seem to be much more complicated than this. I've also looked at this CodeProject project, but it really is much more complicated than what I need. The library should support image grabbing and video grabbing, and preferably live streaming of video. Edit: It is preferable if it is free (or at least very cheap), as this is a hobby project.

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• Can I use ido-completing-read instead of completing-read everywhere?

  - by haxney

  I'm a big fan of ido-mode, so much so that I would like to use it for things like describe-function or find-tag and so on, without having to write something like in "Can I get ido-mode-style completion for searching tags in Emacs?" for each one. Both (defalias completing-read ido-completing-read) and (setf 'completing-read 'ido-completing-read) don't work, at least partly because ido-completing-read calls completing-read in its body, so any simple redefinition would result in infinite recursion. In theory, it should be possible, since the first line of the docstring for ido-completing-read is "Ido replacement for the built-in completing-read." I've looked around a bit and can't seem to find anyone else who has attempted or succeeded at it. I realize that Icicles [2] probably provides something like this, and I may end up going with that anyway, but it is a bit more of a plunge than I care to take right now. Thanks for any help.

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• File I/O OS handling

  - by Albinoswordfish

  This isn't a direct coding question but more of a OS handling mechanism. I was reading somebody's previous question regarding C# and file handling. Apparently C# was throwing an exception regarding a file being locked when trying to access this. So my question is, does C# use an internal lock to handle file I/O between processes, or does the OS use some type of mutual exclusion for file I/O? From what I learned about operating systems, well at least unix, is that the OS doesn't implement any type of mutual exclusion for processes trying to access the same file.

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