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  • Frustrations about which language to use [closed]

    - by Joshua
    I am way too indecisive. I have an idea for a (admittedly craptastic) GUI program, so I start writing it in C# .NET WinForms. Then like halfway through I'm like, damn I should have written this in Qt. So I start writing it in Qt and remember why I hate C++ STL iterators so much. So in my head I go LINQ C++ STL So I'm like, maybe I'll do it in WPF, I like markup to make UIs hey this is kinda like web development (read: ez pz) BUT ITS LIKE WHY GOD WHY CANT I JUST PICK ONE AND COMMIT

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  • Descendent or self selector in jQuery

    - by tttppp
    I want to search for all elements with class needle in all elements returned by jQuery('.haystack') and have tried jQuery('.haystack .needle'), but this doesn't seem to pick up the case where an element has both classes. Is there a selector that will do this?

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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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  • File Output using Gforth

    - by sheepez
    As a first project I have been writing a short program to render the Mandelbrot fractal. I have got to the point of trying to output my results to a file ( e.g. .bmp or .ppm ) and got stuck. I have not really found any examples of exactly what I am trying to do, but I have found two examples of code to copy from one file to another. The examples in the Gforth documentation ( Section 3.27 ) did not work for me ( winXP ) in fact they seemed to open and create files but not write to files properly. This is the Gforth documentation example that copies the contents of one file to another: 0 Value fd-in 0 Value fd-out : open-input ( addr u -- ) r/o open-file throw to fd-in ; : open-output ( addr u -- ) w/o create-file throw to fd-out ; s" foo.in" open-input s" foo.out" open-output : copy-file ( -- ) begin line-buffer max-line fd-in read-line throw while line-buffer swap fd-out write-line throw repeat ; I found this example ( http://rosettacode.org/wiki/File_IO#Forth ) which does work. The main problem is that I can't isolate the part that writes to a file and have it still work. The main confusion is that r doesn't seem to consume TOS as I might expect. : copy-file2 ( a1 n1 a2 n2 -- ) r/o open-file throw >r w/o create-file throw r> begin pad maxstring 2 pick read-file throw ?dup while pad swap 3 pick write-file throw repeat close-file throw close-file throw ; \ Invoke it like this: s" output.txt" s" input.txt" copy-file I would be very grateful if someone could explain exactly how the open, create read and write -file words actually work, as my investigation keeps resulting in somewhat bizarre stacks. Any clues as to why the Gforth examples do not work might help too. In summary, I want to output from Gforth to a file and so far have been thwarted. Can anyone offer any help? Thank you Vijay, I think that I understand the example that you gave. However when I try to use something like this ( which I think is similar ): 0 value test-file : write-test s" testfile.out" w/o create-file throw to test-file s" test text" test-file write-line ; I get ok but nothing is put into the file, have I made a mistake? It seems that the problem was due to not flushing the relevant buffers or explicitly closing the file. Adding something like test-file flush-file throw or test-file close-file throw between write-line and ; makes it work. Thanks again Vijay for helping.

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  • Xcode C++ debugging

    - by mousebird
    I'm looking for a way to have the Xcode IDE pick up on the contents of my weird Boost template classes. Basically, classes complex enough that Xcode can't display their contents correctly. Is there something like the Objective C -description method or toString() in Java that Xcode will look for? At the moment I'm just implementing print() methods and invoking them in gdb, but that's likely to confuse other developers.

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  • how to go back to first if statement if no choices are valid - python

    - by wondergoat77
    how can i have python move to the top of an if statement if nothing is satisfied correctly i have a basic if/else statement like this: print "pick a number, 1 or 2" a = int(raw_input("> ") if a == 1: print "this" if a == 2: print "that" else: print "you have made an invalid choice, try again." what i want is to prompt the user to make another choice for 'a' this if statement without them having to restart the entire program, but am very new to python and am having trouble finding the answer online anywhere.

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  • optimizing any OS for maximum informix client/server performance

    - by Frank Developer
    Is there any Informix documentation for optimizing any operating system where an ifx engine is running? For example, in Linux, strip-down to a bare minimum all unnecessary binaries, daemons, utilities, tune kernel parameters, optimize raw and cooked devices (hdparm), place swap space on beginning tracks of a disk, etc. Someday, maybe, Informix can create its own proprietary and dedicated PICK-like O/S to provide the most optimized environment for a standalone ifx server? The general idea is for the OS where ifx sits on have the smallest footprint and lowest overhead impact.

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  • Reading Web 2.0 HTML Source Code with Perl

    - by Sammy
    Is it possible to read HTML Web 2.0 Source Code that is dynamically generated ? The Perl LWP with its agent-response does not pick up any dynamically generated HTML code. Many websites today are generating dynamic html. If I am shoppping for best prices, and the prices are dynamically fetched and dumped, then I am out of business. Are we reaching the end of a era?

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  • Get a random subset from a set in F#

    - by Cay
    I am trying to think of an elegant way of getting a random subset from a set in F# Any thoughts on this? Perhaps this would work: say we have a set of 2x elements and we need to pick a subset of y elements. Then if we could generate an x sized bit random number that contains exactly y 2n powers we effectively have a random mask with y holes in it. We could keep generating new random numbers until we get the first one satisfying this constraint but is there a better way?

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  • Django save method

    - by Marijus
    So I have a model with a FileField for excel spreadsheet. What I need to do this add another column in this spreadsheet, in each row let user pick from a drop-down list then save it and display it in html. All the picking and uploading will happen through the admin interface. So I have figured out way how to display a spreadsheet in html, however I have no idea how to write this save method. I could really use some hints and tips..

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  • Reverse engineering a bezier curve

    - by Martin
    Given a few sample points on a bézier curve, is it possible to work out the set of possible parameters of the curve? In my specific application there is a limited set of endpoints the curve may have, so I want to generate the set of possible curves, enumerate all of them and pick out all the ones which may end on a valid end point.

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  • How to add some Spring attributes when the application starts

    - by user198147
    I am new to Spring framework and I am working on a web application that must be multilanguage. The tanslated values are in the database and I don't want that each time I am rendering a view to pick the values from the database. The idea is to get them somewhere from the application. So, I want to load this values when my application starts and I don't know where exactly and where to put them. Thank you for your help!

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  • CBIR isk-daemon software alternatives

    - by postgres
    isk-daemon software permits setting feature parameters? I download desktop version and apparently not! There are alternative libraries or software which is not all automatic? I have a set of images and i only want to pick up an image, extract some features and compare them with this set of image, basing on a similarity metric that give me a percentage result like isk-daemon but with more freedom in settings, better in python!

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  • Google not picking up SEO

    - by zeemy23
    Hello, I have a blog running on wordpress with the "All in One SEO" plugin. Everything seems in order including the source code. here's the site: mmjincolorado.com Why does the site result show up so bare where i search "mmjincolorado.com" in google? It doesn't pick up the title or description. No other pages show up either. Thanks so much for your help, zeemy

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  • Best way to communicate between 2 .Net apps?

    - by ajl
    If I control both applications, what is the best way to communicate between 2 exe's written in VB.Net. For example, I want to drop an XML file from one app, and pick it up with the other, but I do not want poll for the file. I've heard of named pipes, but I found it was complicated. What's the most effecient way to do this?

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  • iPhone 4.0 Beta compile for 3.1.3

    - by Mark
    I downloaded the iPhone 4.0 Beta. But for my projects I need to compile for 3.1.3 to be able to still submit my projects to the App Store. If I run an old project that isn't a problem I can see all the versions, but when I start a new project I can only pick the 4.0 beta, how can I fix this?

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