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  • Getting N random numbers that the sum is M

    - by marionmaiden
    Hello I want to get N random numbers that the sum of them is a value. For example, let's suppose I want 5 random numbers that their sum is 1 Then, a valid possibility is: 0.2 0.2 0.2 0.2 0.2 Other possibility is: 0.8 0.1 0.03 0.03 0.04 And so on. I need this for the creation of the matrix of belongings of the Fuzzy C-means.

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  • Translate Linq Expression to any existing Query structure?

    - by fredlegrain
    I have some kind of "data engine" between multiple "data consumer" processes and multiple "data storage" sources. I'd like to provide Linq capabilities to the "data consumer" and forward the query to the "data storage". The forwarded query should be some structured query (like, let's say, NHibernate Criteria). Is there any existing structured query library that could allow me to "just" translate a Linq Expression to such a structured query?

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  • throw exception

    - by Unknown
    Why can't you throw an InterruptedException in the following way: try { System.in.wait(5) //Just an example } catch (InterruptedException exception) { exception.printStackTrace(); //On this next line I am confused as to why it will not let me throw the exception throw exception; } I went to http://java24hours.com, but it didn't tell me why I couldn't throw an InterruptedException. If anyone knows why, PLEASE tell me! I'm desperate! :S

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  • Safest LAMP encrypt method

    - by Adam Kiss
    Hello, what is PHP's safest encrypt/decrypt method, in use with MySQL - to store let's say passwords? Of course, not for portal purposes. I want to do little password (domain/mysql/ftp...) storage for whole team online, but I don't want really to endanger our clients' bussinesses. Hash can't be used for obvious reasons (Doesn't really make sense to run rainbow tables every time :D). Any idea?

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  • Reason behind system power usage?

    - by kumar
    Hi, when the number of applications running in a pc increases, the power consumed by the PC is also increasing. Is this correct? I think the reason behind this is CPU. Please let me know what role the CPU plays for more power usage. Thanks, Kavi

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  • Query.fetch(limit=2000) only moves cursor forward by 1000 entities?

    - by Liron
    Let's say I have 2500 MyModel entities in my datastore, and I run this code: query = MyModel.all() first_batch = query.fetch(2000) len(first_batch) # 2000 next_query = MyModel.all().with_cursor(query.cursor()) next_batch = next_query.fetch(2000) What do you think len(next_batch) is? 500, right? Nope - it's 1500. Apparently the query cursor never moves forward by more than 1000, even when the query itself returns more than 1000 entities. Should I do something different or is it just an App Engine bug?

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  • Dedicating all processor power to a task

    - by Yktula
    Let's say we have a very processor-intensive task at hand which could be effectively parallelized. How can we dedicate all or almost all available processor power to performing that task? The task could be a variety of things, and iterative Fibonacci number generation that saves recorded numbers would be just one example.

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  • Getting Type mismatch for my function

    - by Sandy Williams
    I am getting an error message i.e. Type mismatch: 'EMXWEB_IE_LAUNCH' Line (1): "' ==============================================================================". the function is Option Explicit Public Function EMXWEB_IE_LAUNCH (dicArguments, sErrMsg) Dim strVersion Dim strExeVersion Dim WshShell Dim strEMXWebBrowserTitleBarText Dim ie Const strFunctionName = "EMXWEB_IE_LAUNCH" Set ie = CreateObject( "InternetExplorer.Application" ) ie.Navigate "www.google.com" ie.Visible=True End Function Could any one let me know where i am wrong and why i am getting this issue

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  • Video Upload Applet

    - by Eric
    i am working on a small project that i need the ability to let users upload a video to my website or use a webcam to record a video and then upload it. i have seen this done on several sites (youtube,facebook etc) so i know that there is a java or flash applet that supports this. however i have not been able to find one. can anyone recommend a good flash or java based video uploader with these features?

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  • No Method Error Undefined method 'save' for nil:NilClass

    - by BennyB
    I'm getting this error when i try to create a "Lecture" via my Lecture controller's create method. This used to work but i went on to work on other parts of the app & then of course i come back & something is now throwing this error when a user tries to create a Lecture in my app. I'm sure its something small i'm just overlooking (been at it a while & probably need to take a break)...but I'd appreciate if someone could let me know why this is happening...let me know if i need to post anything else...thx! The error I get NoMethodError in LecturesController#create undefined method `save' for nil:NilClass Rails.root: /Users/name/Sites/rails_projects/app_name Application Trace | Framework Trace | Full Trace app/controllers/lectures_controller.rb:13:in `create' My view to create a new Lecture views/lectures/new.html.erb <% provide(:title, 'Start a Lecture') %> <div class="container"> <div class="content-wrapper"> <h1>Create a Lecture</h1> <div class="row"> <div class="span 6 offset3"> <%= form_for(@lecture) do |f| %> <%= render 'shared/error_messages', :object => f.object %> <div class="field"> <%= f.text_field :title, :placeholder => "What will this Lecture be named?" %> <%= f.text_area :content, :placeholder => "Describe this Lecture & what will be learned..." %> </div> <%= f.submit "Create this Lecture", :class => "btn btn-large btn-primary" %> <% end %> </div> </div> </div> </div> Then my controller where its saying the error is coming from controllers/lectures_controller.rb class LecturesController < ApplicationController before_filter :signed_in_user, :only => [:create, :destroy] before_filter :correct_user, :only => :destroy def index end def new @lecture = current_user.lectures.build if signed_in? end def create if @lecture.save flash[:success] = "Lecture created!" redirect_to @lecture else @activity_items = [ ] render 'new' end end def show @lecture = Lecture.find(params[:id]) end def destroy @lecture.destroy redirect_to root_path end private def correct_user @lecture = current_user.lectures.find_by_id(params[:id]) redirect_to root_path if @lecture.nil? end

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  • automatic xml conversion in scala

    - by Jeff Bowman
    Let's say I have the following class: class Person(val firstName:String, val lastName:String) Is there an automatic way to generate xml from this class without having to hand create a toXml() method? Ideally the output would be something like: <Person <firstNameJohn</firstName <lastNameSmith</lastName </Person It seems like there should be a way to do this without having to write all that out manually. Perhaps there is a trait I haven't found yet?

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  • update text on click of date with jQuery UI datepicker

    - by stevoyoung
    I have two related questions... How do I update an HTML element (let's say a p tag) with the correct date when I click on a day in the jQuery UI datepicker plug in? If I have another way to selecte a date aside from the datepicker, how do I then update the datepicker's selected date (it's adds a class of "ui-state-active" to the date)?

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  • access dropdown control from the master page to the content page using asp.net

    - by Isha Jain
    i have a master page and the content pages in the master page i have the textbox and dropdown the value in the dropdown may vary according to the content pages e.g for one content page the dropdown may contain branchname, city, address and let for other content page under same master page the dropdown may have values like Contactnumber, EmailID, ........... ......... etc..... so please help me to how can i bind that dropdown from my content page thanks.

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  • How to delete images from memory in a browser

    - by trefeater
    Hi all. Is it possible to delete some images from the browser (firefox2) memory using javascript? By doing this, I want to save some precious browser memory and let my web app to work better. I guess that if possible, it will be something like this: delete (document.images[7]); document.images[7].src = null; document.images[7] = null; Thanks guys!

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  • F# compiler order of source files

    - by rwallace
    As I understand it, when using F#, you have to manually list the source files in dependency order for the compiler's benefit (if there is any way around that, please let me know!) Listing them on the command line from left to right obviously isn't going to scale. Is there a way to at least make it accept the list of files in a text file, one per line, preferably with the ability to put in blank lines and comments? I've checked the compiler options, and I don't see anything that looks promising.

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  • how to know whether file is downloaded by user or not?

    - by user251336
    hi all, I have a functionality where a user is given file to download. It works fine. BUT - 1. How to know whether user has downloaded a file or cancelled it? 2. After downloading I wat to redirect current page to another one that is also not happening. Please let me know if any one of you have any idea about it. (I am doing it in Joomla) Regards, Shahu

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  • What is the best practice to segment c#.net projects based on a single base project

    - by Anthony
    Honestly, I can't word my question any better without describing it. I have a base project (with all its glory, dlls, resources etc) which is a CMS. I need to use this project as a base for othe custom bake projects. This base project is to be maintained and updated among all custom bake projects. I use subversion (Collabnet and Tortise SVN) I have two questions: 1 - Can I use subversion to share the base project among other projects What I mean here is can I "Checkout" the base project into another "Checked Out" project and have both update and commit seperatley. So, to paint a picture, let's say I am working on a custom project and I modify the core/base prject in some way (which I know will suit the others) can I then commit those changes and upon doing so when I update the base project in the other "Checked out" resources will it pull the changes? In short, I would like not to have to manually deploy updated core files whenever I make changes into each seperate project. 2 - If I create a custom file (let's say an webcontrol or aspx page etc) can I have it compile seperatley from the base project Another tricky one to explain. When I publish my web application it creates DLLs based on the namespaces of projects attached to it. So I may have a number of DLLs including the "Website's" namespace DLL, which could simply be website. I want to be able to make a seperate, custom, control which does not compile into those DLLs as the custom files should not rely on those DLLS to run. Is it as simple to set a seperate namespace for those files like CustomFiles.ProjectName for example? Think of the whole idea as adding modules to the .NET project, I don't want the module's code in any of the core DLLs but I do need for module to be able to access the core dlls. (There is no need for the core project to access the module code as it should be one way only in theory, though I reckon it woould not be possible anyway without using JSON/SOAP or something like that, maybe I am wrong.) I want to create a pluggable environment much like that of Joomla/Wordpress as since PHP generally doesn't have to be compiled first I see this is the reason why all this is possible/easy. The idea is to allow pluggable themes, modules etc etc. (I haven't tried simply adding .NET themes after compile/publish but I am assuming this is possible anyway? OR does the compiler need to reference items in the files?)

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  • Javascript "inlet" or "offset" function for drop-list options

    - by Camran
    I have seen on several sites that drop list values can have offsets... For example this drop-list: Fruits Apple Banana Orange Colors Red White Black The above are all options, but some have "inlets" or "offsets" or whatever you want to call it. How is this done with js? (regular js, not jquery at the moment) Thanks If you need more input let me know.

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