{"action":"created","issue":{"url":"https://api.github.com/repos/mxcl/PromiseKit/issues/207","labels_url":"https://api.github.com/repos/mxcl/PromiseKit/issues/207/labels{/name}","comments_url":"https://api.github.com/repos/mxcl/PromiseKit/issues/207/comments","events_url":"https://api.github.com/repos/mxcl/PromiseKit/issues/207/events","html_url":"https://github.com/mxcl/PromiseKit/issues/207","id":90279973,"number":207,"title":"How to transform a promise's value to something else without triggering it?","user":{"login":"PrideChung","id":1381489,"avatar_url":"https://avatars.githubusercontent.com/u/1381489?v=3","gravatar_id":"","url":"https://api.github.com/users/PrideChung","html_url":"https://github.com/PrideChung","followers_url":"https://api.github.com/users/PrideChung/followers","following_url":"https://api.github.com/users/PrideChung/following{/other_user}","gists_url":"https://api.github.com/users/PrideChung/gists{/gist_id}","starred_url":"https://api.github.com/users/PrideChung/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PrideChung/subscriptions","organizations_url":"https://api.github.com/users/PrideChung/orgs","repos_url":"https://api.github.com/users/PrideChung/repos","events_url":"https://api.github.com/users/PrideChung/events{/privacy}","received_events_url":"https://api.github.com/users/PrideChung/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-06-23T03:58:28Z","updated_at":"2015-06-23T06:24:52Z","closed_at":null,"body":"If you're familiar with ReactiveCocoa, what I want it's something like `RACSignal`'s `map:` method, transform the promise's value to something else only when the promise's value is delivered. One overload of PromiseKit's `then` method  can transform the promise's value but will also trigger the promise. Maybe I should roll my own `map:`  method?"},"comment":{"url":"https://api.github.com/repos/mxcl/PromiseKit/issues/comments/114376084","html_url":"https://github.com/mxcl/PromiseKit/issues/207#issuecomment-114376084","issue_url":"https://api.github.com/repos/mxcl/PromiseKit/issues/207","id":114376084,"user":{"login":"mxcl","id":58962,"avatar_url":"https://avatars.githubusercontent.com/u/58962?v=3","gravatar_id":"","url":"https://api.github.com/users/mxcl","html_url":"https://github.com/mxcl","followers_url":"https://api.github.com/users/mxcl/followers","following_url":"https://api.github.com/users/mxcl/following{/other_user}","gists_url":"https://api.github.com/users/mxcl/gists{/gist_id}","starred_url":"https://api.github.com/users/mxcl/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mxcl/subscriptions","organizations_url":"https://api.github.com/users/mxcl/orgs","repos_url":"https://api.github.com/users/mxcl/repos","events_url":"https://api.github.com/users/mxcl/events{/privacy}","received_events_url":"https://api.github.com/users/mxcl/received_events","type":"User","site_admin":false},"created_at":"2015-06-23T06:24:52Z","updated_at":"2015-06-23T06:24:52Z","body":"I don't understand what you mean by: trigger. "}}