R : Remove all objects other than functions

“rm(list = setdiff(ls(), lsf.str()))” command is used to remove all objects other than functions.

> ls()
[1] "clc"         "firstName"   "lasyName"    "name"        "revenue"     "revenueChar"
> 
> rm(list = setdiff(ls(), lsf.str()))
> 
> ls()
[1] "clc"

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