[% USE assert %] # throws error if any undefined values are returned [% object.assert.method %] [% hash.assert.key %] [% list.assert.item %]
This plugin defines the assert virtual method that can be
used to automatically throw errors when undefined values are used.
For example, consider this dotop:
[% user.name %]
If user.name is an undefined value then TT will silently
ignore the fact and print nothing. If you USE the
assert plugin then you can add the assert
vmethod between the user and name elements,
like so:
[% user.assert.name %]
Now, if user.name is an undefined value, an exception will
be thrown:
assert error - undefined value for name
Andy Wardley <abw@wardley.org> https://wardley.org/
Copyright (C) 2008 Andy Wardley. All Rights Reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.