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  • How to rotate UIViews?

    - by user717452
    The Twitter app is a tab bar app on the iPhone. Nothing in any of the tabs will rotate, yet, when you click on a link from a tweet, the view controller that is pushed on top of it IS allowed to rotate. The only rotations I have ever doe is from tilting the device, landscape or portrait, but I don't understand how to use 2d transformations and animations to rotate views. How do you rotate any view with that's a subclass of UIView?

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  • Align text with bottom as it comes in during a chat?

    - by Andrew
    I'm building a custom web chat application, and while I have the basics worked out, I've been wondering if this was possible... right now, the chat comes in at the top of the div, and when it reaches the bottom, the div starts scrolling. This works. This is great. But I was wondering if it was possible to create it more like an IRC client, where the chat comes in initially at the bottom of the div, then each new line comes in below the old ones, etc, and again, when the div is full, it starts scrolling. I've managed to get part of this working: I can get it displaying this way. But I can't find a way to scroll it; either the scroll doesn't appear (when there's no overflow on the inner, text div, despite there being an overflow on the outer, container div), or it's confined to the width of the text rather than the width of the container div. Some options I've tried: <div id="chatbox" style="overflow: auto; position: relative; width: 100%; height: 400px;"> <div id="chatmessages" style="overflow: auto; position: absolute; bottom: 0;"></div></div> This has the text appear properly at the bottom, but no scrollbar ever appears. <div id="chatbox" style="overflow: auto; position: relative; width: 100%; height: 400px;"> <div id="chatmessages" style="overflow: scroll; position: absolute; bottom: 0;"></div></div> This has the text appear properly at the bottom, and a scrollbar appears, but it's only ever as wide as the text, even if width=100%... and when the text reaches the top, the scrollbar remains gray. Basically, do I want the scrollbar on the inner or the container div, is this even possible, how do I force it to work, and am I going about this entirely wrong?

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  • Where to define exception classes, inside classes or on a higher level?

    - by rve
    Should exception classes be part of the class which may throw them or should they exist on a higher level? For example : class Test { public: class FooException: public ExceptionBase { }; void functionThrowingFooException(); }; or class FooException: public ExceptionBase { }; class Test { public: void functionThrowingFooException(); }; (functionThrowingFooException() is the only function to ever throw a FooException)

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  • stm monad problem

    - by Alex
    This is just a hypothetical scenario to illustrate my question. Suppose that there are two threads and one TVar shared between them. In one thread there is an atomically block that reads the TVar and takes 10s to complete. In another thread is an atomically block that modifies the TVar every second. Will the first atomically block ever complete? Surely it will just keep going back to the beginning, because the log is in an inconsistent state?

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  • ASP.NET lisbox - Selected first item, always

    - by Lijo
    I have a list box which is populated using a dictioanry. When I iterate throught the selected items using the following code, it always show only the first items as selected - even if the first item is not selected. Have you ever encountered this scenario? Could you please help on this? foreach (ListItem item in lstProcessName.Items) { if (item.Selected == true) { selectedNewSales.Add(item.Text); } }

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  • How can I set a default sort for tables in PHPMyAdmin (i.e. always "Primary key - Descending")

    - by jeremyclarke
    Even though its obnoxious in a lot of ways I use PHPMyAdmin all the time to debug database issues while writing PHP. By default it sorts tables by primary key ascending. 99% of the time I would rather have the newest data (my test data) shown at the top by default rather than the useless first few records ever saved. Is there a way to configure PHPMyAdmin to show the newest records by default? To alter similar behavior?

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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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  • Weird constants

    - by Quassnoi
    I've seen these in real code: #define SCREEN_DIMENSIONS 2 #define THREE_THOUSAND_FIVE_HUNDRED_TWENTY_TWO 3522 What is the weirdest constant you've ever seen? P. S. And of course my favorite in JScript: bool b; switch (b.ToString().length) { case 4: // true ... break; case 5: // false ... break; )

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  • Is "self" necessary?

    - by Rob
    Is using "self" ever necessary in Objective-C or maybe just a good practice? I have gone from using it all the time to not using it at all and I don't seem to really notice any difference. Isn't it just implied anyway?

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  • How dangerous is e.preventDefault();, and can it be replaced by keydown/mousedown tracking?

    - by yc
    I'm working on a tracking script for a fairly sophisticated CRM for tracking form actions in Google Analytics. I'm trying to balance the desire to track form actions accurately with the need to never prevent a form from not working. Now, I know that doing something like this doesn't work. $('form').submit(function(){ _gaq.push('_trackEvent', 'Form', 'Submit', $(this).attr('action')) }); The DOM unloads before this has a chance to process. So, a lot of sample code recommends something like this: $('form').submit(function(e){ e.preventDefault(); var form = this; _gaq.push('_trackEvent', 'Form', 'Submit', $(this).attr('action')); //...do some other tracking stuff... setTimeout(function(){ form.submit(); }, 400); }); This is reliable in most cases, but it makes me nervous. What if something happens between e.preventDefault();and when I get around to triggering the DOM based submit? I've totally broken the form. I've been poking around some other analytics implementations, and I've noticed something like this: $('form').mousedown(function(){ _gaq.push('_trackEvent', 'Form', 'Submit', $(this).attr('action')); }); $('form').keydown(function(e){ if(e.which===13) //if the keydown is the enter key _gaq.push('_trackEvent', 'Form', 'Submit', $(this).attr('action')); }); Basically, instead of interrupting the form submit, preempting it by assuming that if someone is mousing down or keying down on Enter, than that form is submitted. Obviously, this will result in a certain amount of false positives, but it completely eliminates use of e.preventDefault();, which in my mind eliminates the risk that I might ever prevent a form from successfully submitting. So, my question: Is it possible to take the standard form tracking snippet and prevent it from ever fully preventing the form from submitting? Is the mousedown/keydown alternative viable? Are there any submission cases it may miss? Specifically, are there other ways to end up submitting besides the mouse and the keyboard enter? And will the browser always have time to process javascript before beginning to unload the page?

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  • Location based iPhone app

    - by Cheryl
    Hi Everyone I just wanted to say a big thank you to everyone here as my first ever iPhone app is now in the app store! I couldn't have done it without all the help from everyone here. It's called zigAroute if you want to check it out. Thanks Cheryli

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  • Classic ASP and wildcard mapping

    - by user299635
    Hi, We have enabled the wildcard mapping for an existing classic ASP site to handle through aspnet_isapi.dll. Ever since then, the performance of the site has dropped? Does the .asp files get compiled before it served by IIS? Any help is greatly appreciated Jyothish George

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  • Viewmodels and Models, howto split them up

    - by molgan
    Hello I'm using asp.net mvc 2 and I'm not sure howto structure the models and viewmodels. In the nerddinner there is only 1 of each. Shall I have only 1 viewmodel of each entity (?) and then have 1 model for each form-modifing viewpage? So that viewmodel contains like all it ever would need, like: PagedFoo FooClass ..., FooClass, Foowithbunnies, FooClassStats... ? /M

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  • Regular expression - starting and ending with a letter, accepting only letters, numbers and _

    - by jreid9001
    I'm trying to write a regular expression which specifies that text should start with a letter, every character should be a letter, number or underscore, there should not be 2 underscores in a row and it should end with a letter or number. At the moment, the only thing I have is ^[a-zA-Z]\w[a-zA-Z1-9_] but this doesn't seem to work properly since it only ever matches 3 characters, and allows repeated underscores. I also don't know how to specify requirements for the last character.

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  • How do you store third party libraries in your source control?

    - by ajma
    How do you store third party libraries that you use in your project in your source control? When would you store binaries in your source control? When would you store the code in your source control? Would you ever store both? In what situations would you do this? (Btw, I'm using .NET but it doesn't really matter for this question)

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  • Why do I have to pay for something that I'm not using?

    - by Knowing me knowing you
    Guys just finished reading one of my college books about threads in Java and I was informed that lock - what ever it is, is in Object class. So it looks like even though I'm not using threaded classes my objects will be heavier because of that? Don't you think that it's a bit annoying and unfair to expect from anyone to pay for something s/he have not intention of using? Thanks

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  • How to access Hudson CI from a mobile device like the iPhone or iPad ?

    - by user323771
    Hi Everybody, I really like Hudson CI and I do think it is the most useful and effective piece of software ever made for the Agile Application Lifecycle :-) Anyway if the CI become unstable, the development is going to be really compromised, so keeping an eye on it is CRUCIAL ! Does anybody know about an effective solution for always monitoring it while you are "on the road" ? (maybe using your iPhone or iPod)

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