Is it safe to asume that double colons in module names get always translated into slashes ("::" -> "/") instead of backslashes or whatever is used by the OS for subdirs?
No, it's not safe to assume that. And be lucky. Your code wouldn't work if Perl changed the '::' to a '/', because that it would try to divide M by hello("again"), which most likely results in an error.

Perl maps '::' to the appropriate directory separator when it's used as a bareword argument to use and require. But that isn't always.

In reply to Re^3: Use module only if it is in use by JavaFan
in thread Use a module only if it is in use by vitoco

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