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  • Will this static class break in a multi user scenario ?

    - by Perpetualcoder
    Say I make a static class like following with an extension method: public static class MyStaticExtensionClass { private static readonly Dictionary<int, SomeClass> AlgoMgmtDict = new Dictionary<int, SomeClass>(); public static OutputClass ToOutput(this InputClass input) { // clears up the dict // does some kind of transform over the input class // return an OutputClass object } } In a multi user system, will the state management dictionary fail to provide correct values for the transform algorithm? Will a regular class be a better design or shoving the Dictionary inside the method a better design?

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  • similar programs like Sofa Framework?

    - by TopTierTracker
    http://www.sofa-framework.org/ looking for other similar medical simulation software that have easier API for programming, better documentation and more active user interactive help forum. the goal is to do virtual design. I want to design something that can simulate a pipe pumping with haptic devices, but I couldn't get Sofa to work with my phantom device in their UI, and I can't use their API to build my stuff either. it's hard to get things going with slow support. thx for the help

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  • Reading an XML file and store data to mysql database.

    - by Jack Brown
    Hi I need the following php script to do a currency conversion using a different XML file. Its a script from white-hat design http://www.white-hat-web-design.co.uk/articles/php-currency-conversion.php The script needs to be amended to do the following: 1, The php script downloads every 24 hours an xml file from rss.timegenie.com/foreign_exchange_rates_forex rss.timegenie.com/forex.xml rss.timegenie.com/forex2.xml 2, It then stores the xml file data/contents to a mysql database file ie currency and rate. Any advice would be appreciated.

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  • Circular database relationships. Good, Bad, Exceptions?

    - by jim
    I have been putting off developing this part of my app for sometime purely because I want to do this in a circular way but get the feeling its a bad idea from what I remember my lecturers telling me back in school. I have a design for an order system, ignoring the everything that doesn't pertain to this example I'm left with: CreditCard Customer Order I want it so that, Customers can have credit cards (0-n) Customers have orders (1-n) Orders have one customer(1-1) Orders have one credit card(1-1) Credit cards can have one customer(1-1) (unique ids so we can ignore uniqueness of cc number, husband/wife may share cc instances ect) Basically the last part is where the issue shows up, sometimes credit cards are declined and they wish to use a different one, this needs to update which their 'current' card is but this can only change the current card used for that order, not the other orders the customer may have on disk. Effectively this creates a circular design between the three tables. Possible solutions: Either Create the circular design, give references: cc ref to order, customer ref to cc customer ref to order or customer ref to cc customer ref to order create new table that references all three table ids and put unique on the order so that only one cc may be current to that order at any time Essentially both model the same design but translate differently, I am liking the latter option best at this point in time because it seems less circular and more central. (If that even makes sense) My questions are, What if any are the pros and cons of each? What is the pitfalls of circular relationships/dependancies? Is this a valid exception to the rule? Is there any reason I should pick the former over the latter? Thanks and let me know if there is anything you need clarified/explained. --Update/Edit-- I have noticed an error in the requirements I stated. Basically dropped the ball when trying to simplify things for SO. There is another table there for Payments which adds another layer. The catch, Orders can have multiple payments, with the possibility of using different credit cards. (if you really want to know even other forms of payment). Stating this here because I think the underlying issue is still the same and this only really adds another layer of complexity.

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  • Windows Designer host, Control.Parent is not correct

    - by nils_gate
    In my Windows Designer host implementation, The top Control's Control.Controls does have all the child controls but for Child control's Control.Parent is set to {System.Windows.Forms.Design.DesignerFrame+OverlayControl} Am I doing something wrong? How to find who is the actual parent of the control while in design mode?

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  • PHP ucwords(): Uppercase the first character of each word in a string accept 'and', 'to', etc

    - by lauthiamkok
    hi, How can I make upper-case the first character of each word in a string accept a couple of words which I don't want to transform them, like - and, to, etc? For instance, I want this - ucwords('art and design') to output the string below, 'Art and Design' is it possible to be like - strip_tags($text, '<p><a>') which we allow and in the string? or I should use something else? please advise! thanks.

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  • Start to Finish Advanced Project Tutorials

    - by Ronnie Overby
    Can anyone recommend some start to finish project tutorials that really emphasize good design principles and best practices. I am looking for things that demonstrate and emphasize any or all of these: Domain Driven Design Unit Testing Inversion of Control Separation of Concerns Use of interfaces Object Relational Mapping Preferably ASP.NET MVC I am currently watching the Autumn of Agile series, which demonstrates many of these principles. I would like to find more of these tutorials/demos.

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  • Unknown margin being added to a footer in IE6 + 7

    - by Qwibble
    So yeah, like I said, I've spent a few hours trying to fix this bug in the footer that add's an extra 20-30px on to the bottom of the page in IE6 and 7. I've currently set all bottom margins to 0 so as to find what's causing it, I then scoured ie developer tools but came up empty. Here's the homepage design hosted on my web design playground - Link Can anyone see the remedy?

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  • MIN array function non zeros only

    - by user1717622
    I have been trying to get this array function to output (non-zero) minimum values in the 'FINAL DATA' AE column. Can you see a structural error in this formula? =IF($C$4="All EMEA", MIN(IF('FINAL DATA'!$2:$AE$250000<>0, ('FINAL DATA'!$J$2:$J$250000=$C$4)*('FINAL DATA'!$E$2:$E$250000=$E$4)*( 'FINAL DATA'!$AE$2:$AE$250000))), MIN(IF('FINAL DATA'!$AE$2:$AE$250000<>0, ('FINAL DATA'!$K$2:$K$250000=$C$4)*('FINAL DATA'!$E$2:$E$250000=$E$4)*( 'FINAL DATA'!$AE$2:$AE$250000))) )

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  • counting sub rows in mysql

    - by moustafa
    i have 2 table ok catgories and artilces i have this structure catgories web > design > photoshop > layers web > design > photoshop > effects and each one is a catgory and layers catgories has 100 article and effects catgories has 50 article now i want when count the articles 'web' catgory it show 150 article how i can do this give me an example

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  • How does one create an elegant iPhone GUI?

    - by jrtc27
    This is just one of those things where you feel like your own design is utterly terrible, and that all of the other apps have a beautiful design. This question is just about how you would go about creating a user interface that a user would actually want to use?

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  • Component Level Documentation

    - by Jason Summers
    I'm trying to make good on a promise I've made to provide a decent set of documentation for a C# component that I've written. I've done some googling and found templates for software design at high and low level. The problem is that all of the templates seem to be geared towards a complete system design as opposed to individual components and are consequently overkill. Can anyone please point me in the direction of a template geared towards component documentation? Many thanks

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  • Correct term for PSD to HTML to CMS

    - by John Magnolia
    Hi, I have heard a lot of different terms to describe the process of turning a website design into a editable CMS. Currently I take the design and "slice" this up into HTML and CSS then I "plug" this into a CMS. I would class this as frontend development depending on the level of customisation required for the CMS. The reason I ask is I am currently writing up my CV and have become stuck on the correct term for this. Kind Regards

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  • Mutiple FK columns all pointing to the same parent table - a good idea?

    - by Randy Minder
    For those of you who live and breath database design, have you ever found compelling reasons to have multiple FK's in a table that all point to the same parent table? We recently had to deal with a situation where we had a table that contained six columns which were all FK columns to the same parent table. We're debating whether this indicates a poor design on our part or whether this is more common than we think. Thanks very much.

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  • Using intermediate array for hashCode and equals

    - by Basilevs
    As its a pain to handle structural changes of the class in two places I often do: class A { private B bChild; private C cChild; private Object[] structure() { return new Object[]{bChild, cChild}; } int hashCode() { Arrays.hashCode(structure); } boolean equals(Object that) { return Arrays.equals(this.structure(), ((A)that).structure()); } } What's bad about this approach besides boxing of primitives? Can it be improved?

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  • Where's the best place to find good senior web developers?

    - by bokani
    We are looking for a senior web developer for a business start up based in London Mayfair? • Demonstrable experience developing Web 2.0 projects • Complete fluency in HTML, Javascript, CSS, php and MySQL • Experience of jQuery, AJAX and php interaction • Ability to develop applications making use of APIs (Google Maps, Facebook, bespoke CRMs and similar) • Good design aesthetic, including familiarity with Photoshop and CSS • Substantial experience hand-coding • Familiarity with server administration including cPanel • Ability to design HTML newsletters • Progressive enhancement • AJAX application state-memory Salary : £30,000 to £40,000

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  • magento show categories on left sidebar on a page

    - by misulicus
    I cant manage to show on a page, on the left side the categories. I selected for the page under Design - layout to 3 columns, Right side shows fine but nothing on left side. New to magento so i`m not sure in wich file in the template i have to look for. Its a custom template installed so i got so far to: app/design/frontend/default/f001/template/ but not sure now if to look under catalog or paeg folders

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  • How to determine whether a database has been changed or not ?

    - by Locksfree
    I have a need to determine if a database on a MS SQL Server has changed between two distinct moments. The change can be structural or data-related and the check should be generic (i.e. independant of the structure of the database). Preferably, I'd like the check to be T-SQL based or with SMOs, not file based. I checked on MSDN but I haven't found anything relevant so far.

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  • Intermediate values in C++

    - by sterh
    Hello. I can not find how to implement a design in C++. In the language of Delphi in case the operator can write the following design: case s[j] of '0'..'9','A'..'Z','a'..'z','_': doSomeThing(); How can i do the same in c++. Attracts me is the construction type 'a' .. 'z' and etc... Thank you

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