OK, I'm feeling stupid this AM. Consider:
好吧，我觉得这个上午很蠢。考虑：
ppenv<-new.env(parent=.GlobalEnv)
assign('.dirhist','/Users/cgw/Rgames',ppenv)
ls(envir=ppenv)
character(0)
exists('.dirhist',envir=ppenv)
[1] TRUE
get('.dirhist',envir=ppenv)
[1] "/Users/cgw/Rgames"
So my question is: how do I determine the contents of my environment ppenv , i.e. what objects exist there?
所以我的问题是：我如何确定我的环境ppenv的内容，即那里存在哪些对象？
1 个解决方案
#1
1
The problem is due to the object name beginning with a .. Use the argument all.names = TRUE:
问题是由于对象名称以...开头。使用参数all.names = TRUE：
ls(envir = ppenv, all.names = TRUE)
From the help page of ls:
从ls的帮助页面：
all.names a logical value. If TRUE, all object names are returned. If FALSE, names which begin with a . are omitted.
all.names是一个逻辑值。如果为TRUE，则返回所有对象名称。如果为FALSE，则以a开头的名称。被省略。
#1
1
The problem is due to the object name beginning with a .. Use the argument all.names = TRUE:
问题是由于对象名称以...开头。使用参数all.names = TRUE：
ls(envir = ppenv, all.names = TRUE)
From the help page of ls:
从ls的帮助页面：
all.names a logical value. If TRUE, all object names are returned. If FALSE, names which begin with a . are omitted.
all.names是一个逻辑值。如果为TRUE，则返回所有对象名称。如果为FALSE，则以a开头的名称。被省略。