Llama
2020-12-02 10:54:19
Imagine you create the following service and interface:
public interface IFoo
{
void Bar();
}
internal class ConcreteFoo : IFoo
{
public void Bar()
{
Console.WriteLine("Hello from my concrete foo!");
}
}
You then expose a factory:
public class Factory
{
public IFoo CreateFoo()
{
return new ConcreteFoo();
}
}
The Bar method is implementing the interface requirement of void Bar(); in IFoo. While consumers can't instantiate a ConcreteFoo, it's possible for other entities within your library to create and return a ConcreteFoo boxed as an IFoo (which is public), thereby allowing access to the member in the consuming code.
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