Build equivalent in Moose
package Person; use Moose; has name => (is => 'rw'); has age => (is => 'rw'); 1;
- the 'is' keyword makes accessors
 - is => 'rw'
 - read/write attribute/method, method defaults to the attribute name
 - writer => 'set_attribute'
 - writer method name changed to set_attribute
 - reader => 'get_attribute'
 - reader method name changed to get_attribute