Yuan -
There may be faster ways, but
names(lst)[sapply(lst,function(i)'a' %in% i && 'c' %in% i)]
seems to do what you want.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Wed, 23 Jun 2010, Yuan Jian wrote:
Hi,
?
it seems a simple problem, but I can not find a clear way.
I have a list:
lst=list(m=c('a','b','c'),n=c('c','a'),l=c('a','bc'))
lst
$m
[1] "a" "b" "c"
$n
[1] "c" "a"
$l
[1] "a"? "bc"
how can I get list elements that?include a given?subset? for example, for given
subset {'a','c'},?the answer should be?'m' and 'n'.
?
thanks
Yu
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