37 lines
794 B
Plaintext
37 lines
794 B
Plaintext
When a reference parameter (keyword ``++ref++``) is used, the passed argument type must exactly match the reference parameter type. This means that to be able to pass a derived type, it must be cast and assigned to a variable of the proper type. Use of generic methods eliminates that cumbersome down casting and should therefore be preferred.
|
|
|
|
|
|
This rule raises an issue when a method contains a ``++ref++`` parameter of type ``++System.Object++``.
|
|
|
|
== Noncompliant Code Example
|
|
|
|
----
|
|
using System;
|
|
|
|
namespace MyLibrary
|
|
{
|
|
public class Foo
|
|
{
|
|
public void Bar(ref object o1, ref object o2) // Noncompliant
|
|
{
|
|
}
|
|
}
|
|
}
|
|
----
|
|
|
|
== Compliant Solution
|
|
|
|
----
|
|
using System;
|
|
|
|
namespace MyLibrary
|
|
{
|
|
public class Foo
|
|
{
|
|
public void Bar<T>(ref T ref1, ref T ref2)
|
|
{
|
|
}
|
|
}
|
|
}
|
|
----
|