org.sonar.plugins.csharp.S4047.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sonarlint-omnisharp-plugin Show documentation

Code Analyzer based on Omnisharp

There is a newer version: 1.26.0.100277

Show newest version

Why is this an issue?
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)
    {
    }
  }
}