Mastering Modern Perl: Writing Efficient and Maintainable Code/

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Introduction to References

Introduction to References

Learn about anonymous functions in Perl.

We'll cover the following...

Pass values to functions

Perl usually does what we expect, even if what we expect is subtle. Consider what happens when we pass values to functions:

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sub reverse_greeting {
    my $name = reverse shift;
    return "Hello, $name!";
}
my $name = 'Chuck';
say reverse_greeting($name);
say $name;

Outside the function, $name contains Chuck, even though the value ...