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Is key-value observation (KVO) available in Swift?

...observerContext) } override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { guard context == &observerContext else { super.observeValue(forKeyPath: keyPath, of: object, change:...
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How do I convert an object to an array?

... class and return its results. Be careful, for primitive data types like strings it will work great, but I don't know how it behaves with nested objects. in your case you have to do something like; <?php print_r(get_object_vars($response->response->docs)); ?> ...
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Have the same README both in Markdown and reStructuredText

...ndoc is not available, you should set long_description to None or an empty string. – Cerin May 14 '14 at 19:38 ...
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Update a record without first querying?

...sons, you may want to pass in variables instead of a single hard coded SQL string. This will allow SQL Server to cache the query and reuse with parameters. Example: dataEntity.ExecuteStoreCommand ("UPDATE items SET itemstatus = 'some status' WHERE id = {0}", new object[] { 123 }); UPDATE - f...
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XML Schema: Element with attributes containing only text?

...rElement"> <xs:simpleContent> <xs:extension base="xs:string"> <xs:attribute name="value" type="xs:string"> </xs:attribute> </xs:extension> </xs:simpleContent> </xs:complexType> ...
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An expression tree may not contain a call or invocation that uses optional arguments

...oads? I was getting this when I made an overload. Something like void Blah(string a) and void Blah(object a). When I tried to MOQ out a call to the version with object, it gave me this error. – vbullinger Mar 21 '13 at 14:02 ...
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Get OS-level system information

...equires Java 1.6 or higher. public class Main { public static void main(String[] args) { /* Total number of processors or cores available to the JVM */ System.out.println("Available processors (cores): " + Runtime.getRuntime().availableProcessors()); /* Total amount of free ...
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What are .a and .so files?

I'm currently trying to port a C application to AIX and am getting confused. What are .a and .so files and how are they used when building/running an application? ...
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Why Func instead of Predicate?

...x) { Console.WriteLine(x.Message); } static void Main(string[] args) { // can assign any method having the right pattern ExceptionHandler1 x1 = MyExceptionHandler; // and yet cannot assign a delegate with identical declaration! ExceptionHand...
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Create new user in MySQL and give it full access to one database

..., if mysql user has no password or just press "[Enter]" button to by-pass. strings surrounded with curly braces need to replaced with actual values. share | improve this answer | ...