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  • Is there any reason for an object pool to not be treated as a singleton?

    - by Chris Charabaruk
    I don't necessarily mean implemented using the singleton pattern, but rather, only having and using one instance of a pool. I don't like the idea of having just one pool (or one per pooled type). However, I can't really come up with any concrete situations where there's an advantage to multiple pools for mutable types, at least not any where a single pool can function just as well. What advantages are there to having multiple pools over a singleton pool?

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  • Rails: three most recent comments for unique users

    - by Dennis Collective
    class User has_many :comments end class Comment belongs_to :user named_scope :recent, :order => 'comments.created_at DESC' named_scope :limit, lambda { |limit| {:limit => limit}} named_scope :by_unique_users end what would I put in the :by_unique_users so that I can do Comment.recent.by_unique_users.limit(3), and only get one comment per user

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  • How to configure the 5554:WVGA800H model in android

    - by siva
    HI Can any one help me out in Configuring the 5554:WVGA800H model in android,as per this link http://developer.android.com/guide/developing/tools/emulator.html#emulatornetworking they have given the screen for the TABLET ,can any one guide me in this? Thanks & Regards P.Sivasankar

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  • UIView drawing problem.

    - by toc777
    Hi everyone, I have this big problem that i dont know how to fix. I have a UIView that i want to draw a scrolling background on. I am using NSTimer to update 30 frames per second but it seems to redraw one frame every 8 seconds. I am calling [self setNeedsDisplay] but it has no effect. I cant figure out why this is happening, does anyone have any tips? Thanks for your time.

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  • struct and arguments

    - by jay
    I am trying to modularize a function that used to add values to multiple structures in one call. Now I want to do one value addition per call, but I am not sure how to make a less specific argument reference. func ( [?] *val ) { }

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  • Data Quality Check - SQL Server

    - by user319384
    I am trying to find a good mechanism where I can check whether the data being entered by a group of people is grammatically correct, has correct spellings, etc, etc. I also would like to compute words per minute and accuracy. Is there any process to do this so that I do not have to re-invent the wheel? Thanks in advance.

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  • AuthLogic - how to determine current user id throughout the system?

    - by sscirrus
    Hi all, I have set up AuthLogic almost exactly as per the AuthLogic example app at http://github.com/binarylogic/authlogic_example. After someone logs in as User, they can click on links that send them away into the system and away from the users controller. This is an incredibly noob question, but how can I access that User's ID and other attributes from anywhere else, such as an unrelated view or unrelated controller? An example of what I'd like to do: #matchings controller @matching = Matching.find_by_user_id(user.id)

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  • SMTP service to send email on my web application

    - by jmoney
    I've been using gmail's SMTP server to send email (notifications, password reminder, etc) in my web application. However, i'm getting to the point where i'm reaching the limit of 500 sent emails per day using gmail's SMTP. Is there any SMTP service's that I can use instead? A friend told me about sendgrid.com, but that's the only one i've heard of.

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  • Adding ObsoleteAttribute to (or otherwise greylisting) Types not under my control?

    - by Michael Stum
    Is there a way to somehow mark Types I do not control as Obsolete? Basically I would like to add ObsoleteAttribute to types I do not want to use in my .net Project (i.e., SerializableAttribute) I believe I can do something like that with FxCop, but ideally I would like to have the compiler already generate warnings for "greylisted" Types? This should be on a Per-Project level, but sadly "Extension Attributes" don't exist, and adding them at Runtime is too late for ObsoleteAttribute...

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  • ValidatorCallout(asp.net ajax) and CheckListBox

    - by TJ
    Hi, Just wondering if anyone has a good solution to utlise ValidatorCallout with a CheckListBox ? The only solution I could see was creating a custom RequiredFieldValidator as per http://www.4guysfromrolla.com/ASPScripts/PrintPage.asp?REF=%2Fwebtech%2Ftips%2Ft040302-1.shtml. If anyone has any good solution, it would be appreciated if you could share it. thanks

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  • Using GhostScript to get page size

    - by Aristoteles
    Is it possible to get the page size (from e.g. a PDF document page) using GhostScript? I have seen the "bbox" device, but it returns the bounding box (it differs per page), not the TrimBox (or CropBox) of the PDF pages. (See http://www.prepressure.com/pdf/basics/page_boxes for info about page boxes.) Any other possibility?

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  • Scale down WebView content in iphone App

    - by TechFusion
    Hello, I am looking to display multiple web content in one main view. I have created different WebView and make it's height and width to fit all in one view size of Landscape mode. How to scale down web view content to show data in small size (as per WebView height and width) ? I have built application using Interface builder.The view is interface with one tab bar of tab bar controller. Thanks,

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  • Python (Django). Store telnet connection

    - by Shamanu4
    Hello. I am programming web interface which communicates with cisco switches via telnet. I want to make such system which will be storing one telnet connection per switch and every script (web interface, cron jobs, etc.) will have access to it. This is needed to make a single query queue for each device and prevent huge cisco processor load caused by several concurent telnet connections. How do I can do this?

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  • WS Libs: com.sun.xml vs javax.xml

    - by Zilvinas
    There are identical classes of java WebServices API & IMPL in those packages groups, only package names are different. http://mvnrepository.com/artifact/javax.xml http://mvnrepository.com/artifact/com.sun.xml Which ones should I use in my code? I would prefer NON-com.sun.* as per java conventions, but still my dependencies ( e.g. Spring ) are using implementations from com.sun.* OR I can't find an implementation package in javax.xml Does anyone have any experience on this?

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  • Hidden features of HTTP

    - by Gumbo
    What hidden features of HTTP do you think are worth mentioning? By hidden features I mean features that already are part of the standard but widely rather unknown or unused. Just one feature per answer please.

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  • Doubts in ada language involving procedures

    - by maddy
    Hi All, I am a beginner in ada and i had come across a piece of code which is shown below: procedure Null_Proc is begin null; end; Now as per my knowledge the procedure in ada doesn't return anything.My doubt is what does this procedure Null_proc do?I mean i am not clear with the definition of the procedure. Thanks and regards Maddy

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  • [rails] user's account backup and restore

    - by Cédric
    Hi everyone, I am currently working on a project and i would like my users to be able to backup/restore theirs accounts. I am looking for a rails plugin/gem that would easily do that, ie : current_user.backup() = backup_file current_user.restore(backup_file) = database import/replace I don't know if my question is very clear, but i would like to backup every user's related object (posts, comments, etc) and to be able to restore them from a backup file. Thanks per advance, Cédric.

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  • Why we need to read() before write() in TCP server program?

    - by Naga
    Hi, As per my understanding a simple TCP server will be coded as follows. socket() - bind() - listen() - accept() - read() - write() The clients will be written as follows. socket() - bind()(Optional) - connect() - write() - read() Please note the order difference in read() and write() calls between client and server program. Is it a requirement to always read() before write() in a server program and if, then why? Thanks, Naga

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  • Why do browsers use my saved password for all forms in the one site?

    - by user313272
    Is there a way to limit the url of saved credentials in browsers? For example, if I save a username and password for http://www.website.com/login can I make it so that the rest of the forms in the site don't use these details? http://www.website.com/members, http://www.website.com/admin etc... I'm aware of the autocomplete attribute but I don't want to turn off autocomplete entirely. I would like it if the browser remembered the login details per form or url.

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