Most seem like Value Objectshttp://martinfowler.com/bliki/ValueObject.html
I usually find there are several value objects for every entity https://dddsamplenet.codeplex.com/wikipage?title=DDD%20build...
I usually find there are several value objects for every entity https://dddsamplenet.codeplex.com/wikipage?title=DDD%20build...
Immutable is just a word that means unchanging, as in "immutable laws of nature". . Consequently Objects can be immutable if they cannot change after creation. This seems a pretty commonly held view http://en.wikipedia.org/wiki/Immutable_object
How would you define Objects and Values?
More to the point, an object has agency: It gets to decide how to interpret messages sent to it (this is why we say that putting setters on classes turns objects back into mere data structures [1]).
http://www.devx.com/enterprise/the-vision-of-kay-and-fieldin... (right after the seventh paragraph)
https://www.google.com/search?as_q=MacLennan+Values+and+Obje...
These are orthogonal ideas; not contradictory ones.
Yeah, I think of all of these as value objects, and DDD was also a large part of my inspiration for this series of posts. This code eventually rolled into a RailsConf 2015 talk: http://railsconf.com/program#prop_1132