When using an adjacency list model, you can generate the structure in one pass. Taken from One Pass Parent-Child Array Structure (Sep 2007; by Nate Weiner): $refs = array(); $list = array(); $sql = “SELECT item_id, parent_id, name FROM items ORDER BY name”; /** @var $pdo \PDO */ $result = $pdo->query($sql); foreach ($result as $row) … Read more
A couple possibilities: You did not link UIImage+TTShare.m into your target. So while you have the header, you’re not compiling the implementation. If this is part of a static library, you need to add -all_load to the Other Linker Flags build setting for the app linking against the library.
Maven has since been updated and can use categories. An example from the Surefire documentation: <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.11</version> <configuration> <groups>com.mycompany.SlowTests</groups> </configuration> </plugin> This will run any class with the annotation @Category(com.mycompany.SlowTests.class)
EF (and LINQ in general) has issues loading tree like data due to lack of recursive expression/CTE support. But in case you want to load the whole tree (as opposed to filtered tree branch), there is a simple Include based solution. All you need is a single Include and then the EF navigation property fixup … Read more
Sometimes, inheritance just seems like more trouble than it is worth. It is correctly used when you want to add something to an existing class that is a change in the behaviour of that class. With a Category, you just want the existing object to do a little more. As already given, if you just … Read more
The levels should be specified explicitly: A$animal <- factor(A$animal, levels = c(“dog”, “elephant”,”cat”)) A$color <- factor(A$color, levels = c(“green”, “blue”, “red”)) Then you order by the 2 columns simultaneously: A[order(A$animal,A$color),] # animal color # 6 dog green # 4 dog blue # 5 dog red # 9 elephant green # 7 elephant blue # 8 … Read more
Declare a static variable so that you can use its address as the key. The call to objc_setAssociatedObject takes a void* and only the address of your static variable is actually used, not the contents of a NSString… that is only wasting memory. You just need to add: static char STRING_KEY; // global 0 initialization … Read more
If you want to remove /category/ from the url, follow these two steps: Go to Settings >> Permalinks and select Custom and enter: /%category%/%postname%/ Next set your Category Base to . Save it and you’ll see your URL changed to this format: http://yourblog.com/quotes/ (Source: http://premium.wpmudev.org/blog/daily-tip-quick-trick-to-remove-category-from-wordpress-url/)
Solution: As of Xcode 4.2, you only need to go to the application that is linking against the library (not the library itself) and click the project in the Project Navigator, click your app’s target, then build settings, then search for “Other Linker Flags”, click the + button, and add ‘-ObjC’. ‘-all_load’ and ‘-force_load’ are … Read more
.h-file @interface NSObject (LaserUnicorn) @property (nonatomic, strong) LaserUnicorn *laserUnicorn; @end .m-file #import <objc/runtime.h> static void * LaserUnicornPropertyKey = &LaserUnicornPropertyKey; @implementation NSObject (LaserUnicorn) – (LaserUnicorn *)laserUnicorn { return objc_getAssociatedObject(self, LaserUnicornPropertyKey); } – (void)setLaserUnicorn:(LaserUnicorn *)unicorn { objc_setAssociatedObject(self, LaserUnicornPropertyKey, unicorn, OBJC_ASSOCIATION_RETAIN_NONATOMIC); } @end Just like a normal property – accessible with dot-notation NSObject *myObject = [NSObject new]; myObject.laserUnicorn … Read more