Detect an unnecessary nested list

If a list object contains an unnamed list containing another list or a single object, it is a "lame list". For example: list(list(1:10))). The nested list in this example is unnecessary since it contains a single vector, and therefore can be removed. Pruning lame lists can help simplify a list object.

Usage

lame_list(l)

Arguments

l

A list.

Value

TRUE if list object is a lame list, FALSE if not.

See also

clean_list

Examples

if (FALSE) {
lame_list(list(list(1:10)))
lame_list(list(A = list(1:10)))
lame_list(list(list(1:10), list(11:20)))
}