{"action":"opened","issue":{"url":"https://api.github.com/repos/dyc87112/blog-comments/issues/199","repository_url":"https://api.github.com/repos/dyc87112/blog-comments","labels_url":"https://api.github.com/repos/dyc87112/blog-comments/issues/199/labels{/name}","comments_url":"https://api.github.com/repos/dyc87112/blog-comments/issues/199/comments","events_url":"https://api.github.com/repos/dyc87112/blog-comments/issues/199/events","html_url":"https://github.com/dyc87112/blog-comments/issues/199","id":336853458,"node_id":"MDU6SXNzdWUzMzY4NTM0NTg=","number":199,"title":"第四章 正则表达式回溯法原理 | 程序猿DD","user":{"login":"dyc87112","id":3391170,"node_id":"MDQ6VXNlcjMzOTExNzA=","avatar_url":"https://avatars0.githubusercontent.com/u/3391170?v=4","gravatar_id":"","url":"https://api.github.com/users/dyc87112","html_url":"https://github.com/dyc87112","followers_url":"https://api.github.com/users/dyc87112/followers","following_url":"https://api.github.com/users/dyc87112/following{/other_user}","gists_url":"https://api.github.com/users/dyc87112/gists{/gist_id}","starred_url":"https://api.github.com/users/dyc87112/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dyc87112/subscriptions","organizations_url":"https://api.github.com/users/dyc87112/orgs","repos_url":"https://api.github.com/users/dyc87112/repos","events_url":"https://api.github.com/users/dyc87112/events{/privacy}","received_events_url":"https://api.github.com/users/dyc87112/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-06-29T03:47:21Z","updated_at":"2018-06-29T03:47:21Z","closed_at":null,"author_association":"OWNER","body":"http://blog.didispace.com/regular-expression-4/ \n\n 第四章 正则表达式回溯法原理学习正则表达式，是需要懂点儿匹配原理的。 而研究匹配原理时，有两个字出现的频率比较高：“回溯”。 听起来挺高大上，确实还有很多人对此不明不白的。 因此，本章就简单扼要地说清楚回溯到底是什么东西。 内容包括：  没有回溯的匹配 有回溯的匹配 常见的回溯形式  1. 没有回溯的匹配假设我们的正则"}}
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