父环境空间

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请问全局环境的父环境为什么是包？包的父环境为什么是包，尤其是utils的父环境是datasets？

1. x <- .GlobalEnv
   
2. while(environmentName(x) != 'R_EmptyEnv'){
   
3.   x <- parent.env(x)
   
4.   print(x)
   
5. }

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关键词：datasets dataset DataS Sets Data 空间

The globalenv(), or global environment, is the interactive workspace. This is the environment in which you normally work. The parent of the global environment is the last package that you attached withlibrary() or require().

The baseenv(), or base environment, is the environment of the base package. Its parent is the empty environment.

The emptyenv(), or empty environment, is the ultimate ancestor of all environments, and the only environment without a parent.

——“Advanced R” by Hadley Wickham.

cheetahfly 发表于 2016-3-16 16:17
The globalenv(), or global environment, is the interactive workspace. This is the environment in whi ...

多谢！