The following features were added in C# 11:
- Raw string literals
- Generic math support
- Generic attributes
- UTF-8 string literals
- Newlines in string interpolation expressions
- List patterns
- File-local types
- Required members
- Auto-default structs
- Pattern match Span<char> on a constant string
- Extended nameof scope
- Numeric IntPtr
- ref fields and scoped ref
- Improved method group conversion to delegate
- Warning wave 7
Generic Attributes:
// Before C# 11: Old
public class TypeAttribute :
Attribute
{
public TypeAttribute(Type t) => ParamType = t;
public Type ParamType { get; }
}
And to apply the attribute, you
use the typeof operator:
public string Method() =>
default;
// C# 11 feature: New feature
public class
GenericAttribute<T> : Attribute { }
Then, specify the type parameter
to use the attribute:
[GenericAttribute<string>()]
public string Method() => default;
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