Ken Perl wrote:
what is the difference of :: and -> in this statements?
$authInstance = Operation::Auth::getInstance($session,$u->authMethod,$u->userId)
This is a subroutine call, passing 3 arguments.
$authInstance = Operation::Auth->getInstance($session,$u->authMethod,$u->userId)
This is called a class method invocation. Perl will look for a
getInstance sub in package Operation::Auth and its ancestors (via @ISA),
and finally in package UNIVERSAL. If no sub is found, it will look for
an AUTOLOAD sub using the same procedure and invoke it. Once a sub is
found, it will be called with the string 'Operation::Auth' as the first
argument, followed by the three remaining arguments.
--
Well I can't stop here all day...I'm on a cycling tour of North Cornwall!
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