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Higher-Order Functions

• In Perl, you can pass a piece of code like this:

        do_with_board(sub { ...do something...});

• do_with_board gets a code reference argument:

        my $code = shift;

• It can execute the code like this:

        $result = $code->();

        # or
        $result = $code->($x, $y);

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Copyright © 2002 M. J. Dominus