{"action":"opened","issue":{"url":"https://api.github.com/repos/beark/ftl/issues/16","labels_url":"https://api.github.com/repos/beark/ftl/issues/16/labels{/name}","comments_url":"https://api.github.com/repos/beark/ftl/issues/16/comments","events_url":"https://api.github.com/repos/beark/ftl/issues/16/events","html_url":"https://github.com/beark/ftl/issues/16","id":79910034,"number":16,"title":"monoid defined in_terms_of_plus:  are 0 and operator+ the good abstraction? ","user":{"login":"viboes","id":721225,"avatar_url":"https://avatars.githubusercontent.com/u/721225?v=3","gravatar_id":"","url":"https://api.github.com/users/viboes","html_url":"https://github.com/viboes","followers_url":"https://api.github.com/users/viboes/followers","following_url":"https://api.github.com/users/viboes/following{/other_user}","gists_url":"https://api.github.com/users/viboes/gists{/gist_id}","starred_url":"https://api.github.com/users/viboes/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/viboes/subscriptions","organizations_url":"https://api.github.com/users/viboes/orgs","repos_url":"https://api.github.com/users/viboes/repos","events_url":"https://api.github.com/users/viboes/events{/privacy}","received_events_url":"https://api.github.com/users/viboes/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-23T17:50:38Z","updated_at":"2015-05-23T17:50:38Z","closed_at":null,"body":"I wonder if 0 and operator+() is the appropriated abstraction. What about an `Additive` concept that defines `zero<M>() -> M` and 'add(M, M) -> M'?\r\n\r\n"}}