[JOB] Perl Software Developer and Database programmer
andy at hexten.net
Wed Feb 22 11:10:58 GMT 2006
On 22 Feb 2006, at 11:00, Peter Hickman wrote:
> A little worrisome this, I couldn't tell you the difference between
> local and my, I could probably muddle through our. I do know closures
> but what's a stash? I would like to think that I am at least competent
> after all these years but it sounds like I would probably fail.
local works almost exactly the same as LOCAL in BBC Basic :)
(like that helps anyone)
Conceptually local stashes the old value of a variable on a stack and
arranges to restore it's value at the end of the block while my
declares a new variable in the current scope. Dynamically scoped
versus lexically scoped.
So, for example
takes $/ and saves it somewhere for later while
says Can't use global $/ in "my"
Andy Armstrong, hexten.net
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