R中不能有rm對象？

Question

在我的控制檯中，我無法刪除對象，爲什麼？

> ls() 
[1] "f1"  "f2"  "getmail" "k"  "mail" "pattern" "rm"  "word" "x"  
> rm(k) 
Error in rm(k) : unused argument(s) (k) 
> rm("k") 
Error in rm("k") : unused argument(s) ("k") 

Answer 1

已覆蓋rm對象與自己的對象稱爲rm：

> ls() 
[1] "f1"  "f2"  "getmail" "k"  "mail" "pattern" "rm"  "word" "x"  

所以，當你寫rm(something)它不是調用原來rm而是你自己。要撥打原rm，請使用

originalRm <- get('rm', baseenv()) 
originalRm(object) 

# or, simpler: 

base::rm(object)