[erlang-questions] Question concerning the use of -export
Fri Jul 13 02:40:16 CEST 2007
erlang:spawn/3 is outside your module,
so in a call spawn(?MODULE, foo, [.....]) the foo function
_is_ called from outside ?MODULE and therefore has to be
Several years ago I proposed a form of limited export (inspired by
-export_to(Module, [F/N, ..., F/N]).
which would export the named functions to that module only.
spawn(?MODULE, foo, [X,Y])
would make it possible to call a function through spawn/3 without
making it visible absolutely everywhere. (Exporting to the shell
module would also make it possible to call debugging functions
without making them visible everywhere.) -export_to is particularly
important for applications whose modules need to make stuff available
to each other without making it available outside the application.
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