Perl/Tk saves your favorite tools

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  • Ties can be hidden behind scalars, arrays, hashes, file-handles.
  • They translate access to the variable into calls to a hidden object.
  • It is easy to create a db later behind a hash, without changing the rest of your program more than a few lines.
  • In Tk, ties are used to change the value on a Label/Entry on the moment a var changes. We'll see more on that.

OO in Perl -3 Tk - a button

Created by Mark Overmeer with PPresenter on 22 May 2000.