elemIndex -package:utf8-string -is:exact -package:storablevector is:exact package:bytestring

elemIndex :: Word8 -> ByteString -> Maybe Int
bytestring Data.ByteString
O(n) The elemIndex function returns the index of the first element in the given ByteString which is equal to the query element, or Nothing if there is no such element. This implementation uses memchr(3).
elemIndex :: Char -> ByteString -> Maybe Int
bytestring Data.ByteString.Char8
O(n) The elemIndex function returns the index of the first element in the given ByteString which is equal (by memchr) to the query element, or Nothing if there is no such element.
elemIndex :: Word8 -> ByteString -> Maybe Int64
bytestring Data.ByteString.Lazy
O(n) The elemIndex function returns the index of the first element in the given ByteString which is equal to the query element, or Nothing if there is no such element. This implementation uses memchr(3).
elemIndex :: Char -> ByteString -> Maybe Int64
bytestring Data.ByteString.Lazy.Char8
O(n) The elemIndex function returns the index of the first element in the given ByteString which is equal (by memchr) to the query element, or Nothing if there is no such element.
elemIndex :: Word8 -> ShortByteString -> Maybe Int
bytestring Data.ByteString.Short Data.ByteString.Short.Internal
O(n) The elemIndex function returns the index of the first element in the given ShortByteString which is equal to the query element, or Nothing if there is no such element.