is_prefecture(x)
logical
Check if the string is a prefectural string.
If it contains the name of the prefecture and other
strings (e.g. city name), it returns FALSE
.
is_prefecture("\u6771\u4eac\u90fd")
#> [1] TRUE
is_prefecture(c("\u6771\u4eac", "\u4eac\u90fd", "\u3064\u304f\u3070"))
#> [1] TRUE TRUE FALSE