# NOT RUN {
# In the following examples, we have 3 duplicated values,
# 'a' - 2 times, NA - 1 time
stri_duplicated(c('a', 'b', 'a', NA, 'a', NA))
stri_duplicated(c('a', 'b', 'a', NA, 'a', NA), from_last=TRUE)
stri_duplicated_any(c('a', 'b', 'a', NA, 'a', NA))
# compare the results:
stri_duplicated(c('\u0105', stri_trans_nfkd('\u0105')))
duplicated(c('\u0105', stri_trans_nfkd('\u0105')))
stri_duplicated(c('gro\u00df', 'GROSS', 'Gro\u00df', 'Gross'), strength=1)
duplicated(c('gro\u00df', 'GROSS', 'Gro\u00df', 'Gross'))
# }
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