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  • acts_as_revisable 'loses' previous models created before migration

    - by cbrulak
    I have the following the standard, regular post sample app. I created some posts then decided to introduce acts_as_revisable After following the instructions at http://github.com/rich/acts_as_revisable I see that the previous posts are not appearing in the Post.all call. However, if I use the console and do Post.find_by_sql("SELECT * FROM Post WHERE ID=1") the post shows up. Any ideas? Thanks

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  • #ifdef with gfortran 77

    - by ccook
    I am using gfortran to compile FORTRAN 77 and would like to have DEBUG build options by using the preprocessor directive #ifdef. However, when I use them I get compile time warnings "Illegal preprocessor directive". Is it possible to have this functionality without deviating from the standard toolchain?

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  • WCF v.s. legacy ASP.Net Web Services

    - by George2
    Duplicate: although this is a good discussion, this is a duplicate of Web Services — WCF vs. Standard. Please consider adding any new information to the earlier question and closing this one. Could anyone recommend me some documents to describe why WCF is better than legacy ASP.Net web services? I am especially interested in performance and security. Thanks!

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  • What techniques are being used to pass MVC ModelState validation errors back to the client when usin

    - by Jon Erickson
    I'm sort of thinking out loud here, so let me know if I need to clarify... on ajax heavy sites, when using JsonResult to pass information back to the client, what techniques, patterns, best practices are being used to pass ModelState validation errors back to the client? I am using xVal and castle validation on my view models, is there some sort of standard to get jquery validate to display errors coming from ajax responses?

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  • How to camelcase decibels?

    - by Roddy
    The standard abbreviations for decibels is "dB" (note the case!) So, if I have a variable, holding (for instance) a maximum dB value, how best to name it? maxDbValue maxdBValue maxDecibelValue something else? Each has disdvantages - #1 swaps the case of the unit, #2 doesn't clearly split max from dB, and #3 is verbose... I think #1 feels best, but...???

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  • How to properly document programming languages?

    - by roydukkey
    Where can I find information on how to properly document a programming language? What I mean is that there seems to be a standard way to document code. php.net and api.jquery.com seem to document there code the a similar way. For example, the trim() description on php.net. string trim ( string $str [, string $charlist ] ) And likewise on jquery.com .animate( properties, [ duration ], [ easing ], [ callback ] ) Does anyone even know what this syntax is called?

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  • If I register a domain name using a service like A Small Orange, how can I know they are registering

    - by Sergio Tapia
    I have a great name for a website and it's available, but I don't really know how to register a domain name using a barebones website; that's why I want to use A Small Orange-like service. My question is, is it standard procedure to register the name on YOUR(the costumers) behalf, or do companies set it up on their name so they can profit from hits if in the future you stop paying for the hosting?

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  • Are Maybes a good pattern for scala?

    - by Fred Haslam
    For a while I have been struggling to integrate scala with java methods that might return null. I came up with the following utility which helps a lot: // produce an Option, nulls become None object Maybe { def apply[T](t:T) = if (t==null) None else Some(t) } Maybe(javaClass.getResultCouldBeNull()).map( result => doSomeWork(result) ) I have a few questions about this solution: Is there a better or more standard pattern to use? Am I duplicating something that already exists? Does this functionality have hidden gotchas?

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  • Is it okay to use <input type="tel"/> now?

    - by Michael
    I'm working on a mobile phone web app and I have several text fields that could benefit from iPhone's will adjust the keyboard for the user but I'm worried about breaking backwards compatability. What I'm hoping is that browsers/phone that support this can assist the user and other browser will fall back to a standard text field? Is this an acceptable practice? Does it even work?

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  • Sql Server string to date conversion

    - by JosephStyons
    I want to convert a string like this: '10/15/2008 10:06:32 PM' into the equivalent DATETIME value in Sql Server. In Oracle, I would say this: TO_DATE('10/15/2008 10:06:32 PM','MM/DD/YYYY HH:MI:SS AM') This question implies that I must parse the string into one of the standard formats, and then convert using one of those codes. That seems ludicrous for such a mundane operation. Is there an easier way?

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  • MIME/IMF error codes?

    - by hack.augusto
    I need to write php code to identify common e-mail errors, like "inbox full" or specially "invalid email name" from email messages, because we need to clear our databases from nonexistent emails. I'm looking the MIME and IMF formats but I didn't find any kind of standard error code, does it exist?

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  • finding "distance" between two pixel's colors.

    - by igor
    Once more something relatively simple, but confused as to what they want. the method to find distance on cartesian coordinate system is distance=sqrt[(x2-x1)^2 + (y2-y1)^2] but how do i apply it here? //Requires: testColor to be a valid Color //Effects: returns the "distance" between the current Pixel's color and // the passed color // uses the standard method to calculate "distance" // uses the same formula as finding distance on a // Cartesian coordinate system double colorDistance(Color testColor) const;

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  • Form Builder GUI for PHP

    - by Alan Storm
    I'm looking around for an open source form building package for PHP, and figured the hive-mob-mind of StackOverflow might be able to tilt me in the right direction. Specifically, I'm looking for a form/survey builder application. I want something that lets an end user use a web based GUI to create and configure/surveys and web-based forms. What are the de-facto standard tools/packages that people use for this kind of thing these days. I'm interested in software packages, not in hosted services.

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  • SQLAlchemy - SQLite for testing and Postgresql for devlopment - How to port?

    - by StackUnderflow
    I want to use sqlite memory database for all my testing and Postgresql for my development/production server. But the SQL syntax is not same in both dbs. for ex: SQLite has autoincrement, and Postgresql has serial Is it easy to port the SQL script from sqlite to postgresql... what are your solutions? If you want me to use standard SQL, how should I go about generating primary key in both the databases?

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  • Flex, HBox: how to horizontally center all children ?

    - by Patrick
    hi, I cannot center the components in my VBox. I would like to set the standard css element "align: center". How can I do that in Flex ? <mx:VBox> <mx:LinkButton label="Tag1" /> <mx:Image source="@Embed(source='../icons/userIcon.png')" /> <mx:Label id="username" text="Nickname" visible="false" fontWeight="bold" /> </mx:VBox> thanks

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  • Setting Java 1.6 as the default on Mac OS X 10.5.8

    - by Eyvind
    How can I set Java 1.6 to be the default for my MacBook Pro Intel Core 2 Duo with OS X 10.5.8? I have installed the latest software update, and dragged the Java SE 6 64-bit choice to the top in the "Java Preferences" application (and even rebooted), but still, on the command line, java -version responds with: java version "1.5.0_24" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_24-b02-357-9M3165) Java HotSpot(TM) Client VM (build 1.5.0_24-149, mixed mode, sharing) Any ideas?

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  • Indexed element access in JPQL

    - by Timo Westkämper
    Is it possible to do indexed element access in JPQL like in HQL : select o from Order o where o.items[0].id = 1234 I couldn't find something related in the JPA 2 specs, I am targeting EclipseLink JPA here, so if you come up with an EclipseLink solution, that's ok as well, although a JPQL standard solution is preferred.

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  • JavaScript file changes deployment

    - by Balaji
    Hi, we are having MVC web application. some of the code is in javascript. when we deploy any changes to the javascript the changes are not reflected on the client side. We have to ask clients to do CTRL+F5 to get the changes. Is there a standard way of pushing javascript changes to the clientside?

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  • How Have You Implemented Open Source Contributions At Your Company?

    - by Travis
    Ok guys, I know others have asked this question in a similar manner in the past, but I want to go beyond the theoretical and find out answers from people who have worked in an environment that relied heavily upon open source technology and never contributed anything back to the open source community, and was able to convince the boss / owner to contribute back to the open source community. I know alot of the standard answers, but I'm looking for some more practical information? What was the key argument, that changed the culture in your company, and how has it changed?

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