August 1997
Beginner
312 pages
8h 35m
English
Content preview from Learning Perl on Win32 SystemsBecome 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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Variables
An
array variable holds a single list value (zero or more scalar
values). Array variable names are similar to scalar variable names,
differing only in the initial character, which is an
at sign (@)
rather than a dollar sign ($). For example:
@fred # the array variable @fred @A_Very_Long_Array_Variable_Name @A_Very_Long_Array_Variable_Name_that_is_different
Note that the array variable @fred is unrelated to
the scalar variable $fred. Perl maintains separate
namespaces for
different types of things.
The value of an array variable that has not yet been assigned is
(), the
empty list.
An expression can refer to array variables as a whole, or it can examine and modify individual elements of the array.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.