February 2012
Intermediate to advanced
1184 pages
37h 17m
English
Content preview from Programming Perl, 4th EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using Hard References
Just as there are numerous ways to create references, there are also several ways to use, or dereference, a reference. There is just one overriding principle: Perl does no implicit referencing or dereferencing.[125] When a scalar is holding a reference, it always behaves like a simple scalar. It doesn’t magically start being an array or hash or subroutine; you have to tell it explicitly to do so, by dereferencing it.
[125] We already confessed that this was a small fib. We’re not about to do so again.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.