Can you explain the difference between Mvx.RegisterType and Mvx.RegisterSingleton

Mvx.RegisterType

- Purpose: This method registers a type so that a new instance of it is created every time it is requested. It is typically used for services that should not be shared across the application, such as data models or transient services.
- Behavior: When you call `Mvx.Resolve()`, a new instance of `T` is created and returned. This means that each time you resolve the type, you get a different instance.
- Use Cases: It's useful for types that need to maintain their own state independently or for scenarios where you want to ensure that each component receives a fresh instance of the service.

Example:

csharp
Mvx.IoCProvider.RegisterType();

Mvx.RegisterSingleton

- Purpose: This method registers a type as a singleton, meaning that only one instance of the type is created and shared across the entire application. It is commonly used for services that need to maintain a global state or for communication between different parts of the application.
- Behavior: When you call `Mvx.Resolve()`, the same instance of `T` is returned every time. The instance is created either immediately upon registration or lazily when first requested, depending on the registration method used.
- Use Cases: It's ideal for services like event aggregators, logging services, or any other global service where consistency across the application is crucial.

Example:

csharp
Mvx.IoCProvider.RegisterSingleton(new Foo());

csharp
Mvx.IoCProvider.RegisterSingleton(() => new Foo());

Key Differences

- Instance Creation: `RegisterType` creates a new instance each time it's resolved, while `RegisterSingleton` ensures that only one instance exists throughout the application.
- Lifetime: The lifetime of instances created by `RegisterType` is transient (new instance per request), whereas instances created by `RegisterSingleton` have a singleton lifetime (one instance for the entire application).
- Use Cases: `RegisterType` is suitable for transient services, while `RegisterSingleton` is better for global or shared services.