{"action":"created","issue":{"url":"https://api.github.com/repos/chainer/chainer/issues/5274","repository_url":"https://api.github.com/repos/chainer/chainer","labels_url":"https://api.github.com/repos/chainer/chainer/issues/5274/labels{/name}","comments_url":"https://api.github.com/repos/chainer/chainer/issues/5274/comments","events_url":"https://api.github.com/repos/chainer/chainer/issues/5274/events","html_url":"https://github.com/chainer/chainer/pull/5274","id":354164070,"node_id":"MDExOlB1bGxSZXF1ZXN0MjEwOTk0MzMw","number":5274,"title":"Backprop from moved variables","user":{"login":"toslunar","id":1964281,"node_id":"MDQ6VXNlcjE5NjQyODE=","avatar_url":"https://avatars1.githubusercontent.com/u/1964281?v=4","gravatar_id":"","url":"https://api.github.com/users/toslunar","html_url":"https://github.com/toslunar","followers_url":"https://api.github.com/users/toslunar/followers","following_url":"https://api.github.com/users/toslunar/following{/other_user}","gists_url":"https://api.github.com/users/toslunar/gists{/gist_id}","starred_url":"https://api.github.com/users/toslunar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/toslunar/subscriptions","organizations_url":"https://api.github.com/users/toslunar/orgs","repos_url":"https://api.github.com/users/toslunar/repos","events_url":"https://api.github.com/users/toslunar/events{/privacy}","received_events_url":"https://api.github.com/users/toslunar/received_events","type":"User","site_admin":false},"labels":[{"id":222603817,"node_id":"MDU6TGFiZWwyMjI2MDM4MTc=","url":"https://api.github.com/repos/chainer/chainer/labels/feature","name":"feature","color":"fbca04","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":8,"created_at":"2018-08-27T03:05:56Z","updated_at":"2018-10-19T08:56:23Z","closed_at":null,"author_association":"MEMBER","pull_request":{"url":"https://api.github.com/repos/chainer/chainer/pulls/5274","html_url":"https://github.com/chainer/chainer/pull/5274","diff_url":"https://github.com/chainer/chainer/pull/5274.diff","patch_url":"https://github.com/chainer/chainer/pull/5274.patch"},"body":"Close #5266.\r\n\r\nThe idea of this PR is to move the \"ownership\" of a `Variable` `y` to its method `y.backward`.\r\nBecause Python does not have this kind of move semantics, I propose:\r\n```python\r\nwith chainer.variable.delay_backward():\r\n    y.backward()\r\n    del y\r\n```"},"comment":{"url":"https://api.github.com/repos/chainer/chainer/issues/comments/431294261","html_url":"https://github.com/chainer/chainer/pull/5274#issuecomment-431294261","issue_url":"https://api.github.com/repos/chainer/chainer/issues/5274","id":431294261,"node_id":"MDEyOklzc3VlQ29tbWVudDQzMTI5NDI2MQ==","user":{"login":"beam2d","id":392019,"node_id":"MDQ6VXNlcjM5MjAxOQ==","avatar_url":"https://avatars2.githubusercontent.com/u/392019?v=4","gravatar_id":"","url":"https://api.github.com/users/beam2d","html_url":"https://github.com/beam2d","followers_url":"https://api.github.com/users/beam2d/followers","following_url":"https://api.github.com/users/beam2d/following{/other_user}","gists_url":"https://api.github.com/users/beam2d/gists{/gist_id}","starred_url":"https://api.github.com/users/beam2d/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/beam2d/subscriptions","organizations_url":"https://api.github.com/users/beam2d/orgs","repos_url":"https://api.github.com/users/beam2d/repos","events_url":"https://api.github.com/users/beam2d/events{/privacy}","received_events_url":"https://api.github.com/users/beam2d/received_events","type":"User","site_admin":false},"created_at":"2018-10-19T08:56:23Z","updated_at":"2018-10-19T08:56:23Z","author_association":"MEMBER","body":"`backward` as an attribute is strange, so I want to avoid that."}}
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