I have a following code:
public class Foo<T>
{
private IComparable<T> a { get; set; }
public int foo(IComparable<T> b)
{
return a.CompareTo(b); // compile error : Argument type 'System.IComparable<T>' is not assignable to parameter type 'T?'
}
}
Argument type 'System.IComparable' is not assignable to parameter type 'T?'
How can I avoid this error?
CodePudding user response:
Add a generic constraint at the class level to ensure that T
implements IComparable<T>
. Then replace IComparable<T>
in the property and parameter type with just T
.
public class Foo<T> where T : IComparable<T>
{
private T a { get; set; }
public int foo(T b)
{
return a.CompareTo(b);
}
}