858 B
858 B
Global Using Directive
Syntax for a using directive is extended with an optional global
keyword that can follow the using
keyword:
using_directive
: 'using' 'global'? ('static' | name_equals)? name ';'
;
- Global Using Directives are allowed only on the Compilation Unit level (cannot be used inside a namespace declaration).
- Global Using directives, if any, must precede any non-global using directives.
- The scope of a Global Using Directive extends over the namespace member declarations and non-global using directives of all compilation units within the program. The scope of a Global Using Directive specifically does not include other Global Using Directives. Thus, peer Global Using Directives or those from a different compilation unit do not affect each other, and the order in which they are written is insignificant.