Difference between interface as type constraint and interface as parameter?

Question

If I wanted to create a method that takes an instance of IList as a parameter (or any other interface, but let\'s use IList as an example), I could cre

Answer 1

Simple :

here you gave a pretty easy example : since you already gave the top interface ILIST.

but ,

lets say i have an instanc Of Objects.

JimMorrison
JohnLennon
SnowieWhite

they are all from ILegends.

they are all singers objects ( var singer = new Singer())

YokOno is also a singer but not Ilegends ( mmmm ... wonder why?)

and your function can take Singer.

but you want to make sure that only ILegeneds will be valid... so here is your answer.