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  • Clojure example of the day?

    - by Michiel Borkent
    Is there a Clojure example of the day kind of service, like a blog, or Twitter account I can follow? Would be really nice to have a short example every day to enhance Clojure skills and to get inspired to delve deeper into the language. Clojure really lends itself well for short but powerful code.

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  • Get all Vector2 Points Within Radius

    - by CheapDevotion
    I am looking for a formula that will give me all of the Vector2 Points within a certain radius given the center. Essentially what I am trying to do is change the color of each pixel in a 256 x 256 texture that is within a certain radius from a specific pixel (Using the Unity3d Game Engine). Programming Language doesn't really matter, as I can probably convert it to something I can use.

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  • check if foler exists in the root jquery

    - by Dimal Chandrasiri
    I'm trying to load an image to a div background using the following file structure in the root. WebContent -- | zharaimages -- | [ItemID] -- | Image.jpg This is done by jQuery and the file structure is inside the root. The ItemID folder is dynamic and I have to check whether the path exists using jQuery and if the path is not valid, I should go to a default path to fetch the default image. How can I check the path is valid using jQuery. I'm hoping to this can be done without an ajax call. Can any one help me on a tutorial or an API I can use for this! UPDATE The files are on the server. The concept I have is that I have 100s of item elements & I want to load an image for each item element. The images are saved in the server ( a local host ) and the folder hierarchy is divided using the item ID as shown. What I want to do is check whether the image file exists before appending it to the background of the item element div. Is this possible. This is a web application developed using spring.

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  • output type of binary tree

    - by gcc
    desired tree output should be like picture showed in below website. [web]http://www.all-science-fair-projects.com/science_fair_projects_encyclopedia/upload/6/6d/Binary_search_tree.png can I take output like that. If I can, how? (sorry, because I cannot sketch the graph in question task so I must give link ) (language is gcc)(platform is linux)

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  • linux process scheduling delayed for long time

    - by Medicine
    I have done strace on my multi-threaded c++ application running on linux after couple hours of running, none of the threads got run, for about 12 seconds. I have seen that the unfinished select system call which is called with a timeout was unfinished before the thread was suspended, reported after it resumed that, it took 11.x seconds for the operation to finish. This is clear indication that the process got starved for a long time. All threads in the process are created with default scheduling policy(SCHED_OTHER) of linux and default priority. There are another 5 similar apps running on the same box which are also heavy I/O bound like this app due to heavy data received on the socket. But most of the time, this app is getting scheduled delay. The other apps are created with same sched policy and priority as this i.e. the defaults. why is only this process gets blocked almost all of the time? Could it be because this process is more I/O intensive as in more busy due to may be higher rates of data? So, the linux dynamic priority adjusting in play here which pushed this process down?

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  • What is the quikest method to see actual color of any hex code #a7a7a7?

    - by metal-gear-solid
    What is the quikest method to see actual color of any hex code #a7a7a7? When i work on other's CSS then if i deal with color codes then i quickly wan to see the color of that particular hex code. suppose if i'm editing css in notepad and i found code #a7a7a7 then how can i know what is the color of this code. If i have a color on my screen then i quickly know what would be hex code for this with the help of some tools ,but i need just opposite of this. i'm not talking about to see whole color chart of site. I want to see color of particular hex code.

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  • Call to a member function ... on a non-object

    - by jayceekay
    i have an object which is instantiated in an initialize file, which is called with every request. the name is right, so why is it telling me that oourls isn't an object and that redirectLoggedIn isn't its method? a var dump on oourls says NULL. but it's instantiated, and the backtrace at the bottom shows that it goes through initialization and instantiates it. pretty small snippet of code, here's the relevant bit: if($email) { global $session; $session->grantLogin($email); global $oourls; $oourls->redirectLoggedIn(); } else { return false; } and here's the output of debug_print_backtrace i threw in above the oourls method call because i'm completely confused: #0 accounts::verifyEmailRegisterAccount(37a6274c8f4bfa5c537b40e8e04d634a) called at [\public\includes\default\verifyemail.php:16] #1 require_once(\public\includes\default\verifyemail.php) called at [\support\php\ObjectOrientedURLs.class.php:48] #2 ObjectOrientedURLs->mhqqrVerifyemail(Array ([0] => 37a6274c8f4bfa5c537b40e8e04d634a)) #3 ReflectionMethod->invoke(ObjectOrientedURLs Object (), Array ([0] => 37a6274c8f4bfa5c537b40e8e04d634a)) called at [\support\php\ObjectOrientedURLs.class.php:280] #4 ObjectOrientedURLs->parseAndInvokeURL() called at [\support\php\ObjectOrientedURLs.class.php:255] #5 ObjectOrientedURLs->__construct() called at [\support\php\initialize.php:76] #6 require_once(\support\php\initialize.php) called at [\public\index.php:2]

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  • Reading a SquashFS archive

    - by p-static
    (SquashFS is a compressed filesystem - http://en.wikipedia.org/wiki/SquashFS) I'm looking for a way to read a SquashFS filesystem from a program. So far, I've know about the in-kernel drivers for it, but I'm sure that a userspace library for it must exist somewhere. Any language would be fine, but C is preferred. Just mounting the filesystem and using it that way is technically possible, but I'd rather avoid that route because the application I'm looking at would involve working with at least a few dozen archives at any given time.

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  • What's wrong with this "if"?

    - by Gurzo
    Hello, I'm currently trying to make an AppleScript which should recognize the selected file in Finder and do the relative command in Terminal. Everything was going fine since I reached the part where it should define the language of the selected file: it just doesn't check the ifs. I checked if it writes fileExtension correctly (via return) and it does. Here is the Gist with the code, any help would be appreciated. Thanks

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  • How can I fix a locale warning from perl?

    - by xain
    When I run perl, I get the warning: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). Any ideas on how to fix it?

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  • How to calculate the cycles that change one permutation into another?

    - by fortran
    Hi, I'm looking for an algorithm that given two permutations of a sequence (e.g. [2, 3, 1, 4] and [4, 1, 3, 2]) calculates the cycles that are needed to convert the first into the second (for the example, [[0, 3], [1, 2]]). The link from mathworld says that Mathematica's ToCycle function does that, but sadly I don't have any Mathematica license at hand... I'd gladly receive any pointer to an implementation of the algorithm in any FOSS language or mathematics package. Thanks!

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  • what math do i need to convert this number

    - by Uberfuzzy
    given an X, what math is needed to find its Y, using this table? x->y 0->1 1->0 2->6 3->5 4->4 5->3 6->2 language agnostic problem and no, i dont/cant just store the array, and do the lookup. yes, the input will always be the finite set of 0 to 6. it wont be scaling later.

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  • Where c++ really shines?

    - by pygabriel
    I know C and python, and I'm moving toward another language for learning purposes. My problem is that I like to learn things with something to do (for example contributing to some project or do something amazing, not boring plain algebra). I would like to hear suggestions about the fields in which C++ shines and where I can found interesting programming with C++. (for fields I mean networking/gui programming/algorithms/games ...)

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  • .Net file writing and string splitting issues

    - by sagar
    I have a requirement where the file should be split using a given character. Default splitting options are CRLF and LF In both these cases I am splitting the line by \r\n and \r respectively. Also I have requirement where any size of file should be processed. (Processing is basically inserting the given string in a file at given position). For this I am reading the file in chunk of 1024 bytes. Then I am applying the string.Split() method. Split() method gives options for ignoring white spaces and none. I have to add back these line break characters to the line. for this I am using a binary writer and I am writing the byte array to the new file. Issue:- 1) When line break is CRLF, and the split option is NONE, while spaces are also added in the splitted array. Second option is given (to ignore white spaces) CRLF works properly. 2)Bit ignoring white space option creates other problems, as I am reading the file byte by byte I can't ignore a white space. 3)When line break characters are other than default(e.g. '|', a null value is prepended to the resulting line. Can anybody give solution to my issues?

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  • How to search Twitter for replies to @abc<MY-STRING>def ?

    - by oobscure
    What's the simplest way, if any, to search Twitter for replies to any username that includes <string? eg, how to search at the same time for replies to @google, @googletech, @firstgooglers, @nogoogle ? I'm not a competent developer with any language but I can handle some easy JS or PHP or regex & Bash scripting...snippets welcome.

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  • How can I get class, property, and method data from files without executing their code, similar to R

    - by Chris
    I have a bunch of PHP files with classes, in them (although I can't be 100% sure that they won't have code outside of classes in them too), and I need to parse these files to get information about the classes, such as the names of the classes, the methods, the properties, whether they are private/public/static, etc. I looked at PHP's reflection classes and this is very close to what I want but the reflection doesn't seem to use external files and it appears to need to define the classes first. I need to make sure that none of the code is executed and I will be editing the files so I can't guarantee that they will even be error-free. Any suggestions? Thanks.

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  • Why would Mathematica break normal scoping rules in Module?

    - by Davorak
    As was pointed out in a recent post scoping does not work as expected inside of Module. An example from that thread is: Module[{expr}, expr = 2 z; f[z_] = expr; f[7]] (*2 z$1776*) But the following works as almost as expected. Module[{expr}, expr = 2 z; Set@@{f[z_], expr}; f[7]] (*14*) What language design consideration made wolfram choose this functionality?

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