r - Deleting a sequence of objects

Question

I have a bunch of data frames whose names are "yob.14", ..., "yob.60", based on year of birth. How do I delete them without having to rm() each one separately? I tried

rm(paste0("yob.",i))

but that got me an error message:

... must contain names or character strings"

Answer 1

用这个：

rm(list=paste0("yob.",14:60))

编辑：使用@baptiste 的建议：

rm(list=Filter(exists, paste0("yob.", 14:60)))

如果生成的某些名称不引用现有数据框。

另一种选择，使用正则表达式（感谢@mnel）：

rm(list=ls(pattern="^yob\\."))