June 2002
Beginner
759 pages
80h 42m
English
A list is an ordered group of scalar values. A literal list can be composed as a comma-separated list of values contained in parentheses, for example:
(1,2,3) # Array of three values 1, 2, and 3
("one","two","three") # Array of three values "one", "two", and "three"The generic form of list creation uses the quoting operator
qw// to contain a list of values
separated by whitespace:
qw/snap crackle pop/
With the quoting operators, you’re not limited to // when you use one of the operators. You
can use just about any character you want. The following is exactly
the same as the example above:
qw!snap crackle pop!
It’s important that you remember not to use any delimiters
except whitespace with qw//. If
you do, these delimiters will be handled as list members:
@foods = qw/fish, beef, lettuce, cat, apple/; # EL WRONG-O!
foreach (@foods) {
print $_; # Prints fish and then a literal comma, etc.
}