保持记录，研究你的在线资料，并决定你可以删除什么，下载一个像Freedom这样的程序，使你远离浏览器，或采取 "数字安息日"。
Keep logs to study your online profile and decide what you can knock out, download a program like Freedom that locks you out of your browser, or take a "digital Sabbath".
我们的示例是一家保险公司使用的应用程序，公司必须保持客户投保的所有产权的法律记录。
Our example application will be used by an insurance company that must keep legal records of all the property rights that its customers are insured for.
优秀的程序员习惯将代码保持得简短、简单和具有良好的文档记录，以便使其可维护。
Good programmers make it a habit to keep code short, simple, and well-documented so that it's maintainable.
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