Declare::Constraints::Simple::Library::OO(3)

NAME
Declare::Constraints::Simple::Library::OO - OO Constraints

SYNOPSIS
  # accept objects or classes
  my $object_or_class = Or( IsObject, IsClass );

  # valid on objects with all methods
  my $proper_object = And( IsObject,
                           HasMethods( qw(foo bar) ));

  # validate against date objects
  my $is_date_object = IsA('DateTime');

DESCRIPTION
This library contains the constraints for validating parameters in an object oriented manner.

CONSTRAINTS

  HasMethods(@methods)
Returns true if the value is an object or class that "can" all the specified @methods.

The stack or path part of "HasMethods" looks like "HasMethods[$method]" where $method is the first found missing method.

  IsA(@classes)
Is true if the passed object or class is a subclass of one of the classes mentioned in @classes.

  IsClass()
Valid if value is a loaded class.

  IsObject()
True if the value is blessed.

SEE ALSO
Declare::Constraints::Simple, Declare::Constraints::Simple::Library

AUTHOR
Robert 'phaylon' Sedlacek "<phaylon@dunkelheit.at>"

LICENSE AND COPYRIGHT
This module is free software, you can redistribute it and/or modify it under the same terms as perl itself.