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  • When to throw exceptions?

    - by FRKT
    Exceptions are wonderful things, but I sometimes worry that I throw too many. Consider this example: Class User { public function User(user){ // Query database for user data if(!user) throw new ExistenceException('User not found'); } } I'd argue that it makes as much sense to simply return false (or set all user data to false in this case), rather than throwing an exception. Which do you prefer?

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  • id vs class selection benchmark

    - by zaf
    Has anybody bench marked selecting elements with id's and class's from CSS and javascript? It would make sense that an element with an id is faster to select than if it had a class even if it was the only element with that class. Do I really need to be concerned?

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  • jQuery - count number of rows in a table

    - by danjan
    How do I count the number of tr elements within a table using jquery. Sorry, I sense this might be basic but i've been banging my head against it. I know there is a similar thread, but I just want the total rows. http://stackoverflow.com/questions/613024/count-number-of-table-rows-between-two-specific-rows-with-jquery

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  • C# Winform Question

    - by Soo
    Hi SO, I'm just getting started with winforms in C# and things are going well, except I want to learn how to do something like: if user presses "proceed" button, it will run some code, and change the form, so that there are more options available to the user on the form. In other words, I want to make my forms more than one "page". I hope that all makes sense. Any help would be appreciated, thanks!

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  • Python: How to make a cross-module variable?

    - by Dan Homerick
    The __debug__ variable is handy in part because it affects every module. If I want to create another variable that works the same way, how would I do it? The variable (let's be original and call it 'foo') doesn't have to be truly global, in the sense that if I change foo in one module, it is updated in others. I'd be fine if I could set foo before importing other modules and then they would see the same value for it.

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  • Recursion Question : Revision

    - by stan
    My slides say that: A recursive call should always be on a smaller data structure than the current one There must be a non recursive option if the data structure is too small You need a wrapper method to make the recursive method accessible Just reading this from the slides makes no sense, especially seeing as it was a topic from before christmas! Could anyone try and clear up what it means please? Thank you

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  • Sharepoint Workflow doesn't trigger after created/edited tickets

    - by Brad Johnson
    I have a workflow created in Sharepoint designer that works fine when manually triggered. I want it to trigger when a new ticket is created and when an existing ticket is edited. I have tried everything, but it makes no sense that it works when manually triggered, but does not appear to trigger when tickets are created/modified. Any help would be appreciated.

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  • How to select records as columns in SQL

    - by Leigh
    Hi, I have two tables: tblSizes and tblColors. tblColors has columns called ColorName, ColorPrice and SizeID. There is one size to multiple colors. I need to write a query to select the size and all the colors (as columns) for a that size with the price of each size in its respective column. The colors must be returned as columns, for instance: SizeID : Width : Height : Red : Green : Blue 1---------220-----220----£15----£20-----£29 Hope this makes sense Thank you

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  • why including www in a jquery load causes it to fail?

    - by zenna
    Could someone enlighten me as to why including www in a ajax request causes it to fail. i.e. This works: $('#mydiv').load('http://mydomain.com/getitems'); But this doesn't (returns nothing) $('#mydiv').load('http://www.mydomain.com/getitems'); Note that www.mydomain.com/getitems is a valid domain, in the sense that if I point my web browser to it I am able to load the page.

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  • Flash CS5 Syntax Issue

    - by Lappy
    I've got an actionscript 3 project which I created in Flash CS4, I just tried publishing it in CS5, it converted the save to CS5 and is now complaining about incorrect syntax at places that make no sense such as: Scene=Scene 1, layer=Layer 1, frame=1, Line 12 '{' expected Line 12 is: function songinfoLoaded(event:Event):void {

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  • Are GUID primary keys bad in theory, or just practice?

    - by Yarin
    Whenever I design a database I automatically start with an auto-generating GUID primary key for each of my tables (excepting look-up tables) I know I'll never lose sleep over duplicate keys, merging tables, etc. To me it just makes sense philosophically that any given record should be unique across all domains, and that that uniqueness should be represented in a consistent way from table to table. I realize it will never be the most performant option, but putting performance aside, I'd like to know if there are philosophical arguments against this practice?

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  • Why hasn't MSSQL made a WHERE clause mandatory by default?

    - by Josh Einstein
    It seems like a no brainer to me. I've heard countless stories about people forgetting the WHERE clause in an UPDATE or DELETE and trashing an entire table. I know that careless people shouldn't be issuing queries directly and all that... and that there are legitimate cases where you want to affect all rows, but wouldn't it make sense to have an option on by default that requires such queries to be written like: UPDATE MyTable SET MyColumn = 0 WHERE * Or without changing the language, UPDATE MyTable SET MyColumn = 0 WHERE 1 = 1 -- tacky, I know

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  • How to react when the client's response is negative on delivery?

    - by ZiG
    I am a junior programmer. Since my supervisor told me to sit in with the client, I joined. I saw the unsatisfied face of the client despite the successful (from my programmer's perspective) delivery of the project! Client: You could have included this! Us: Was not in the specification! Client: Common Sense! As a programmer, how do you respond in this situation?

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  • What is "Commodity Software"?

    - by aioobe
    What is "Commodity Software"? (Part of the title in the article at http://valgrind.org/docs/newsome2005.pdf) (I'm not an english speaker, and the direct translation of "commodity" to my language does not make much sense to me in a software-context.) An example would be appreciated!

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  • Facade controller, is it efficient?

    - by Berlioz
    Using a facade controller pattern in .net. It seems as if though it is not efficient BECAUSE, for every event that happens in a domain object(Sales, Register, Schedule, Car) it has to be subscribed to by the controller(use case controller) and then the controller in turn has to duplicate that same event to make it available for the presentation, so that the presentation can show it to the user. Does this make sense? Please comment!

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  • Use one Socket to send and recieve data

    - by volody
    What makes more sense? use one socket to send and receive data to/from a embedded hardware device use one socket to send data and separate socket to read data Communication is not very intensive but the important point is to receive data as fast as possible. On application side is used Windows XP and up.

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  • Specify ApplicationName when using ASP.NET Web Site Administration Tool

    - by ProfK
    This tool is supposed to configure users and roles etc., but when I use it on a new web site, with a new aspnetdb database, it adds a record to the aspnet_Applications table with the ApplicationName and the LoweredApplicationName fields set to /. I think it would make more sense if it actually used the application name, i.e. the web site name. Can I safely just change the application name? Is there a better way of configuring these things?

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  • Delphi exe, will it run with just BDE configuration?

    - by Roddy
    Hi, I've taken over a legacy application and I have the exe created. If I can configure the BDE then in theory it should be possible to run this. Someone indicated that Delphi needs to be installed in order for the app to run. I'm unsure of that - it doesn't quite make sense to me as there is an exe file. Any input from Delphi experts would be appreciated. Roddy

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  • Should we have Browser Side Validation

    - by Raju
    For a back office application which is going to be used in house and users trained to use it, does it make sense to have browser side validation. After training users will seldom make mistakes. These mistakes would get caught at the server side. Also bearing in mind that the bandwidth availability is a lesser concern I feel we should avoid browser side validations. This will save the effort of maintaining the same functionality at two places.

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  • Mapping over sequence with a constant

    - by Hendekagon
    If I need to provide a constant value to a function which I am mapping to the items of a sequence, is there a better way than what I'm doing at present: (map my-function my-sequence (cycle [my-constant-value])) where my-constant-value is a constant in the sense that it's going to be the same for the mappings over my-sequence, although it may be itself a result of some function further out. I get the feeling that later I'll look at what I'm asking here and think it's a silly question because if I structured my code differently it wouldn't be a problem, but well there it is!

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  • Why do techs recommend YUM installs yet repositories and providers are ages behind?

    - by JM4
    I have been reading page after page after page about the benefits of using YUM package installer and how NOBODY should built installs from source files (which again makes no sense to me) yet the repositories and source builders always package files in Tarball format, leaving a TON of work (which usually ends up going wrong) to the individual instead of formatting SRPMs for the end user. Has the world gone mad? I feel like I am taking crazy pills!

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