Re^2: Messing with @

I know I'm going to appear a little thick with this post, but how does a sub-routine magically adopt the @_ arguments from the parent routine? I thought @_ was local to each sub-routine?

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Re^3: Messing with @_ by kyle (Abbot) on May 29, 2008 at 22:24 UTC
That happens if you call the sub with an ampersand and without parentheses. This is documented in perlsub.	[reply]
Re^3: Messing with @_ by jethro (Monsignor) on May 29, 2008 at 22:28 UTC
When you call a function without braces i.e. `&func` instead of `&func()`, a shortcut happens. In the words of 'man perlsub': If a subroutine is called using the "&" form, the argument list is optional, and if omitted, no @_ array is set up for the subroutine: the @_ array at the time of the call is visible to subroutine instead. This is an efficiency mechanism that new users may wish to avoid.	[reply] [d/l] [select]