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• Macbook Pro 2.66 GHz vs. 2.8 GHz

  - by nevan

  Is there much advantage in getting the higher end Macbook Pro compared to the mid-range one? The differences between the two are: 2.66 GHz vs. 2.8 GHz 256 MB graphics memory vs. 512 MB 3 MB L2 cache vs. 6 MB 320 GB hard drive vs. 500 GB $2000 vs. $2300 I've looked around, but I can't find any direct comparisons for the two machines. I'd be using the machine for development. I generally use a computer for 3 years. I don't really play games, but do use Photoshop regularly. I've heard that once Snow Leopard arrives, the graphics chip will be used to boost the main processor, so I was wondering if getting the one with more graphics memory would be an advantage?

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• How can I quickly access the Microsoft Word zoom setting?

  - by nevan

  I get a lot of Word documents to work on, and the first thing I always do is access the zoom setting (View- Zoom) and change the zoom to "Page Width". There's no keyboard shortcut for the zoom settings, and I do it enough times that I'd like a quicker way. In Pages, there's a little pop-up that lets you choose the zoom you want. Is there a way to quickly change the zoom settings in Word? Thanks.

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• Dragging a shape in Photoshop doesn't show outline

  - by nevan

  I've created a shape in Photoshop with the Rounded Rectangle tool. Now I want to reposition it. When I use the Path Selection tool to move it, Photoshop doesn't seem to pick up the shape. When I let go of the mouse button, the shape moves to wherever I've moved the mouse. I'm used to there being an outline as I drag, so I can position the shape in its final place but this outline isn't showing up. Is there some setting like "Show outline when dragging" that I've changed by mistake?

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• Is there a way to download Android apps to my PC?

  - by nevan

  I want to download an Android app to look at what's inside, but I don't own an Android phone. Is there a way to download the file (I'm not sure of the name, on iPhone it's a .ipa) using just a PC?

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• How can I truncate an NSString to a set length?

  - by nevan

  I searched, but surprisingly couldn't find an answer. I have a long NSString that I want to shorten. I want the maximum length to be around 20 characters. I read somewhere that the best solution is to use substringWithRange. Is this the best way to truncate a string? NSRange stringRange = {0,20}; NSString *myString = @"This is a string, it's a very long string, it's a very long string indeed"; NSString *shortString = [myString substringWithRange:stringRange]; It seems a little delicate (crashes if the string is shorter than the maximum length). I'm also not sure if it's Unicode-safe. Is there a better way to do it? Does anyone have a nice category for this?

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• Get directory contents in date modified order

  - by nevan

  Is there an method to get the contents of a folder in a particular order? I'd like an array of file attribute dictionaries (or just file names) ordered by date modified. Right now, I'm doing it this way: get an array with the file names get the attributes of each file store the file's path and modified date in a dictionary with the date as a key Next I have to output the dictionary in date order, but I wondered if there's an easier way? If not, is there a code snippet somewhere which will do this for me? Thanks.

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• How can I set a highlighted image on a table view cell?

  - by nevan

  I've followed the code in Apple's AdvancedTableViewCells and built a table view with a background image for cells. Now I want to change it so that instead of the blue highlight colour, it shows a darker version of my image. What are the steps I need to follow to do this? I'm using a UITableViewCell subclass with a custom NIB. My background image is implemented as the cell.backgroundView. The steps I've take so far are: Change the selectionStyle of the cell to "None" Set the Highlight colour on my UILabel subviews to a light colour Create a darker version of my background as a separate image Override setSelected: animated: I'm wondering about the next steps.

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• Objective c string formatter for distances

  - by nevan

  I have a distance as a float and I'm looking for a way to format it nicely for human readers. Ideally, I'd like it to change from m to km as it gets bigger, and to round the number nicely. Converting to miles would be a bonus. I'm sure many people have had a need for one of these and I'm hoping that there's some code floating around somewhere. Here's how I'd like the formats: 0-100m: 47m (as a whole number) 100-1000m: 325m or 320m (round to the nearest 5 or 10 meters) 1000-10000m: 1.2km (round to nearest with one decimal place) 10000m +: 21km If there's no code available, how can I write my own formatter? Thanks

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• What kinds of questions are Technical Support Incidents for?

  - by nevan

  Last year I received two "Technical Support Incidents" in the iPhone developer program, but when I went to renew I found that I would lose them. I have another two for this year, but I'm not really sure about the kind of problems that can be solved by using them. What kinds of questions are the best use of these Technical Support Incidents? What is the kind of problem I can use them for? What do you receive when you use them? Thanks.

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• Change a localized InfoPlist.strings using an Xcode target

  - by nevan

  Here's an obscure problem. I'm using an InfoPlist.strings to localize my app name. It's only got one value: CFBundleDisplayName = "Mon App". The strings file is localized (putting it in a directory for that localization). I've just made an extra target, where I change things like the non-localized app name (different Info.plists), and the icon. I'm also changing the Default.png using a run script build phase (copying different files depending on the app type I'm building). I've tried using the script to copy different versions of my InfoPlist.strings, but I couldn't make it work. Here's what I used: if($TARGET_NAME == "MonApp")then cp fr.lproj/MonApp_InfoPlist.strings fr.lproj/InfoPlist.strings endif I've seen a post suggesting wincent strings util for processing strings, but wanted to see if there's an easy way to do this. Any help greatly appreciated.

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• UIActionSheet cancel button strange behaviour

  - by nevan

  I have a UIBarButtonItem opening an action sheet to offer users choices about what to do. Everything works as expected unless I try to click on the "Cancel" button. The target of the button appears to have moved up from where it should be. I can only activate it by clicking somewhere in the middle of the "Cancel" and "Ok" buttons. I've tried at action sheets in other applications and they work fine, so it's not just my big thumb. The action sheet is opening in a UIViewController - (void)showOpenOptions { UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:NSLocalizedString(@"Open link in external application?", @"Open in external application") delegate:self cancelButtonTitle:NSLocalizedString(@"Cancel", @"Cancel") destructiveButtonTitle:NSLocalizedString(@"Open Link", @"Open Link") otherButtonTitles:nil]; [sheet showInView:self.view]; [sheet release]; }

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• Remove a toolbar when pushing a new view

  - by nevan

  In the iPhone maps app there's a toolbar at the bottom of the map view (it contains the Search/Directions segment control and others). When moving from the map view by clicking on a callout, the toolbar slides out with the map view, leaving the next view (a table controller) with no toolbar. I've tried to do the same thing with [self.navigationController setToolbarHidden:YES animated:YES] in the second view controller, but this gives a strange toolbar sliding down animation, while the map view is sliding to the left. Using [self.navigationController setToolbarHidden:YES] in viewDidLoad:animated also causes a bad effect (it makes the toolbar disappear the moment the push animation starts, leaving an ugly white space). I'm assuming the answer to this is to use a nib file, but I'd prefer to do it programatically (if possible). How can I get the toolbar to "stick" to the map view and slide out with it when I push a new view controller? Thanks.

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• Where should I remove a notification observer?

  - by nevan

  I set up a notification observer in my view controll init method like so: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveState) name:UIApplicationWillResignActiveNotification object:nil]; Where is the best place to call removeObserver:name:object: for this notification. I'm currently calling it in my dealloc method, but wanted to know if that might cause problems.

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• Create a navigation button like the iPod "Now Playing" button

  - by nevan

  In the iPod app, there's a right-facing navigation button as well as the usual left-facing "Back" button. It gets you back to the "Now Playing" screen. Is this a custom button, or is there a way to easily create one using standard tools?

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• How can I quickly set the iPhone deployment target in Xcode?

  - by nevan

  I was reading this great article about Base SDK and Deployment targets and decided to try it out myself. The Deployment target seems to be buried in the Build settings, and not that easy to access compared to the Base SDK target (which is right there in the General tab of the project settings). To get to the Deployment settings now I have to Get Info, go to the Build tab, then search for "Deployment". Is there a quick way to check and access the Deployment target in Xcode that I'm missing?

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• Why does this TableView code work?

  - by nevan

  I made a typo when creating a UITableViewCell with this code: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"CellIdentifier"; UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { NSLog(@"Creating cell"); cell = [[[UITableViewCell alloc] initWithStyle:UITableViewStylePlain reuseIdentifier:CellIdentifier] autorelease]; } cell.textLabel.text = @"Hello"; return cell; } The typo is in using UITableViewStylePlain instead of UITableViewCellStyleDefault. The code worked fine, creating new cells. Why?

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• iPhone keyboard, Done button and resignFirstResponder

  - by nevan

  This is probably a dumb question, but I can't find the answer in the docs. Did the "Done" button on the pop-up keyboard always cause the keyboard to disappear? I see a lot of code around the web like this: - (BOOL)textFieldShouldReturn:(UITextField *)theTextField { [theTextField resignFirstResponder]; return YES; } When I press the "Done" button, the keyboard pops down and the UITextField resigns first responder. I'm presuming that pressing the "Done" button didn't used to cause a UITextField to resignFirstResponder, but that behavior changed at some time. I'm debugging on OS 3.0 - 3.1.3

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• Using the system localizations on iPhone

  - by nevan

  I want to make a back button for a navigation controller with the title "Back" instead of the title of the previous controller. I'm using this code: UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Back", @"Back") style:UIBarButtonItemStyleBordered target:nil action:nil]; self.navigationItem.backBarButtonItem = backButton; I'd like to be able to skip localizing the "Back" string in my app (since I can only localize it in a limited number of languages). If I give my navigation controller no title, the back button will be automatically localized into whatever the language the user has chosen, so the system has translations of "Back" in many languages. Is there a way to access the localizations that are already present in the system and use them myself? These are things like "Back", "Cancel", "Done" and so on, which show up when creating one of the standard system buttons.

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• Define and return a struct in c

  - by nevan

  I'm trying to convert some code from Javascript to c. The function creates an array (which always has a fixed number of items) and then returns the array. I've learned that in c it's not straightforward to return an array, so I'd like to return this as a struct instead. My c is not all that great, so I'd like to check that returning a struct is the right thing to do in this situation, and that I'm doing it the right way. Thanks. typedef struct { double x; double y; double z; } Xyz; Xyz xyzPlusOne(Xyz addOne) { Xyz xyz; xyz.x = addOne.x + 1; xyz.y = addOne.y + 1; xyz.z = addOne.z + 1; return xyz; }

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