xcode4

问题 I have two entities, Parent and Child. The Parent entity has a to-many relationship to Child named "children." Child has a String attribute named "childName." I want to make a fetched property on Parent, let's call it "specialChild" that returns a Child with a particular name, let's say "Special". The following predicates return an empty set when I access the fetched property: children.childName == "Special" SUBQUERY(children, $eachChild, $eachChild.childName = "Special").@count > 0 SUBQUERY

问题 I've been tearing my hair over this problem for some weeks, but I can't quite figure it out. Entering the example code used for cv::FileStorage: FileStorage fs("test.yml", FileStorage::WRITE); Mat cameraMatrix = (Mat_<double>(3,3) << 1000, 0, 320, 0, 1000, 240, 0, 0, 1); fs << "cameraMatrix" << cameraMatrix; fs.release(); in Visual Studio produces the file test.yml just fine. However, reproducing the code in XCode4 with the latest build of OpenCV(2.4.1) doesn't seem to output any file

问题 I'm new to development for Mac App Store and I'm trying to test my first signed app in development environment (just before get into the mess of receipt validation !). I went through the following steps: 1) I created 3 certificates a) Mac App b) Mac Installer c) Development (If I don't create this certificate, I can't create the development provisioning profile at next point 4) 2) I created an App ID 3) I registered my systems 4) I created Development Provisioning Profile 5) I installed the

问题 I recently upgraded to xcode 4. My application utilizes tabbarcontroller. In old xcode 3.x, you were able to change the tabs to different types per this screenshot: From what I gather in researching this issue, xcode 4 no longer offers this functionality. Am I missing something? From what I researched we are now suppose to delete/add tabs then change attributes to get the desired effect. So, to that end in xcode 4, I've added a new tab item and made the class a UINavigationController fully

问题 I have a project where a couple of files are in red, In XCode 3 I used to click the file Get Info and change the Path, but I have no idea how to do it in the new XCode 4. 回答1: Click on your file, and then open the right side pane (there is a button in the top right corner). There you will see Identity and Type. Under the location drop down there is a small icon of I'm not sure what. If you click it, it lets you choose a file. I think that is what you want. 回答2: My method of choice is to just

问题 I am trying to install Fabric into a Virtualenv / Django 1.3.1 / OS X Lion with Xcode 4.2. This error seems to be fairly prevalent but I can't seem to find an answer when you are running Python 2.7 & Xcode 4.2. I'm running: Python 2.7 (r27:82508, Jul 3 2010, 21:12:11) [GCC 4.0.1 (Apple Inc. build 5493)] How do I execute gcc-4.0 instead of gcc-4.0.1? Thanks! The full Fabric install + error: Requirement already satisfied (use --upgrade to upgrade): fabric in ./lib/python2.7/site-packages/Fabric

问题 I have an XCode 4.2 project that I've been working with all day just fine and all of the sudden, after an XCode crash, my project started to compile with the error: "file myClass.m: error: Lexical or Preprocessor Issue: 'map' file not found" where myClass.m uses: #import <map> #import <vector> I've tried a clean build but xcode is still complaining. How can I get it to recognize std:vector and std:map libraries again? 回答1: it's because your source is not c++ or objc++. change myClass.m to

问题 Xcode 4 tells me when an NSAssert has failed, but the assert description and backtrace are no longer logged. I have seen this question: How to make Xcode4 stop at NSAssert failure? which is helpful, but I would rather log the assertion and continue. How can I make NSAssert behave this way? Thanks! 回答1: The question you linked to gets you most of the way there. Add a breakpoint action to the breakpoint you set for the assertion. Select the breakpoint from the breakpoint navigator, right-click,

问题 This problem is pretty ridiculous and I'm running out of ideas of what to try: I have been successfully using Xcode to debug my game on my iOS device (iPhone) for the past couple of weeks, but now all it will do when I try to do a run with my iPhone set as target is successfully build the application and then Stop immediately. No Errors, nothing in console logs. The application doesn't even copy over to my device. Xcode says: Building, Running, Finished Running....all within 2 seconds... I'm

问题 The Xcode 4 Allocations profiling instrument may list "Memory Tag 70" as a type under the VM Tracker. Other types listed are MALLOC_LARGE, MALLOC_SMALL, MALLOC_TINY, "Core Animation", "CG Image", "mapped file", etc. What type of memory allocation does "Memory Tag 70" stand for? 回答1: It's ImageIO memory, i.e. decoded images that are sticking around. 来源： https://stackoverflow.com/questions/6527651/what-does-memory-tag-70-mean