Examples of Tricky Features

• The manual claims lexically scoped wrappers:

        {
           my $dummy = wrap 'foo', pre => ..., post => ...;

           foo(...);    # Pre and post wrappers are called
        }
        foo(...);   # Pre and post wrappers are not called

• Actually, this is a lie

• The wrappers are dynamically scoped

        { 
           my $dummy = wrap 'foo', pre => ..., post => ...;

           bar();
           # END OF LEXICAL SCOPE
        }

        sub bar {
          foo();     # Pre and post wrappers are called anyway
        }

• So much for Hook::LexWrap

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Copyright © 2003 M. J. Dominus