in reply to Re: Re: what does shift do?
in thread what does shift do?

Because $r is being used as an object, by calling its send_http_header() and print() methods. Without the shift (I presume this is inside a subroutine), the object represented by the reference $r would never be referenced and the code would not work.

P.S., without seeing the context in which your example lives, it I do not exactly know what kind of object $r is , but from its method names, I suspect it's one of the Http::XXX'en.

dmm

If you GIVE a man a fish you feed him for a day
But, TEACH him to fish and you feed him for a lifetime

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Re: Re(2): what does shift do?
by Juerd (Abbot) on May 19, 2002 at 20:52 UTC

    P.S., without seeing the context in which your example lives, it I do not exactly know what kind of object $r is , but from its method names, I suspect it's one of the Http::XXX'en.

    The context is mod_perl, and probably Apache::Registry, which wraps scripts in subs for caching. 

    - Yes, I reinvent wheels.
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