Pass any information you want to in to the constructor of Settings form, and provide accessor methods for things you need out of there. public class SettingsForm : WinForm { private string m_Data; private int m_nExample = 0; // ctor public SettingsForm(string _data) { m_Data = data; // you can now use this in SettingsForm … Read more
I’m assuming you would normally do something like this as part of a factory implementation, where the actual types aren’t known at compile-time… First, note that an easier approach may be a post-create init step, then you can use generics: static T Create<T>({args}) where T : class, ISomeInitInterface, new() { T t = new T(); … Read more
See this thread http://www.cocoabuilder.com/archive/cocoa/241465-iphone-why-can-a-uitextfield-be-its-own-delegate.html#241505 Basically, the reason for the “freeze” when you click on your UITextField with itself as a delegate is that respondsToSelector is calling itself -> infinite recursion. UITextField is unique AFAIK. You can usually use a class as its own delegate with no particular problems. For UITextField you must create an actual … Read more
As long as the method group SomeObject.SomeMethod has a method with return type void and taking no parameters there is no difference. This is because ThreadStart is defined as a delegate that returns void and takes no parameters and therefore there is an implicit conversion from the method group SomeObject.SomeMethod to ThreadStart. Thus, both are … Read more
Any object initializer used outside a constructor has to refer to static members, as the instance hasn’t been constructed until the constructor is run, and direct variable initialization conceptually happens before any constructor is run. getUserName is an instance method, but the containing instance isn’t available. To fix it, try putting the usernameDict initializer inside … Read more
In Cocoa, a delegate is an object that another object defers to on questions of behavior and informs about changes in its state. For instance, a UITableViewDelegate is responsible for answering questions about how the UITableView should behave when selections are made or rows are reordered. It is the object that the UITableView asks when … Read more
This was originally an iPhone app built on iOS 5. To make it an iPad app, I just duplicated the project and upgraded all the .xibs to iPad versions. I don’t know if it’s a bug or not, or if it’s something to do with the upgrade to iOS 6, but doing it like that … Read more
User113716’s great answer will no longer work in jQuery 1.9+, because the pseudo-event hover is no longer supported (upgrade guide). Also since jQuery 3.0 delegate() for binding events is officially deprecated, so please use the new on()(docs) for all event binding purposes. You can easily migrate user113716‘s solution by replacing hover with mouseenter mouseleave and … Read more
The Expression API supports this in .NET 4.0, but sadly the C# compiler doesn’t add any extra candy to support. But the good news is that you can trivially take a “get” expression (which the C# compiler can write) and re-write it as a “set” expression. And even better; if you don’t have .NET 4.0, … Read more
Changing functionality at runtime is not what delegates accomplish. Basically, delegates save you a crapload of typing. For instance: class Person { public string Name { get; } public int Age { get; } public double Height { get; } public double Weight { get; } } IEnumerable<Person> people = GetPeople(); var orderedByName = people.OrderBy(p … Read more