The rules for method resolution are complex and perhaps not properly understood by all coders. The params
keyword can make method
declarations overlap in non-obvious ways, so that slight changes in the argument types of an invocation can resolve to different methods.
This rule raises an issue when an invocation resolves to a method declaration with params
, but could also resolve to another
non-params
method too.
Noncompliant code example
public class MyClass
{
private void Format(string a, params object[] b) { }
private void Format(object a, object b, object c) { }
}
// ...
MyClass myClass = new MyClass();
myClass.Format("", null, null); // Noncompliant, resolves to the first Format with params, but was that intended?