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An array stores an ordered list of values. While a scalar variable can only store one value, an array can store many. Perl array names are prefixed with an @-sign. Here is an example: my @colors = ("red","green","blue");

Each individual item (or element) of an array may be referred to by its index number. Array indices start with 0, so to access the first element of the array

@colors,

you use \$colors[0].

Notice that when you're referring to a single element of an array, you prefix the name with \$ instead of @. The \$-sign again indicates that it's a single (scalar) value; the @-sign means you're talking about the entire array. If you want to loop through an array, printing out all of the values, you could print each element one at a time:

my @colors = ("red","green","blue");

print "\$colors[0]\n"; # prints "red" print "\$colors[1]\n";

# prints "green" print "\$colors[2]\n";

# prints "blue" A much easier way to do this is to use a foreach loop:

my @colors = ("red","green","blue");

foreach my \$i (@colors) { print "\$i\n"; }

For each iteration of the foreach loop,

\$i is set to an element of the @colors array. In this example,

\$i is "red" the first time through the loop.

The braces {} define where the loop begins and ends, so for any code appearing between the braces,

\$i is set to the current loop iterator.

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