libclass-contract-perl 1.14-6 (armhf binary) in ubuntu trusty

 The Class::Contract module implements strong encapsulation, static
 inheritance, and design-by-contract condition checking for
 object-oriented Perl. The module provides a declarative syntax for
 attribute, method, constructor, and destructor definitions at both
 the object and class level. Pre-conditions, post-conditions, and
 class invariants are also fully supported.