assert_has_duplicates: Does the input have duplicates?
Description
Checks to see if the input has duplicates.Usage
assert_has_duplicates(x)
assert_has_no_duplicates(x)
has_duplicates(x)
has_no_duplicates(x)
Value
has_duplicates returns TRUE
ifanyDuplicated is TRUE.
assert_has_duplicates returns nothing but throws
an error if has_duplicates is not TRUE.
has_no_duplicates is the negation of
has_duplicates.