There are three lists:
a = list(1,2)
b = list(2,3)
c = list(a,b)
The command a %in% c yields FALSE FALSE. The result I would like to see is TRUE since a is an element of list c. How do I achieve this?
R check if list of lists contains specific list
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2 Answers
Check whether each component is identical to a and return TRUE if any of those comparisons are TRUE.
any(sapply(c, identical, a))
## [1] TRUE
This should also help:
list(a) %in% c
Examples:
a = list(1,2)
b = list(2,3)
c = list(a,b)
y = list(3,4)
z = list(1)
list(a) %in% c # True
list(b) %in% c # True
list(y) %in% c # False
list(z) %in% c # False
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