[R] ls() pattern question
y@ngk@|9999 @end|ng |rom y@hoo@com
Thu Jul 15 01:40:57 CEST 2021
I have many data frames in environment. I need to keep 3 data frames only, con DB2 and ora.
I write the script to do this.
rm(ls(pattern != c("(con|DB2|ora)")))
but it give me an error message:
Error in rm(ls(pattern != c("(con|DB2|ora)"))) :
... must contain names or character strings
I think the pattern option doesn't support != ? and is it possible to fix this?
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