ひらがなかカタカナなのか判定したい #golang ref: http://qiita.com/tenntenn/items/b0fa4dcd5e2f54a373aa

file0.txt

func In(r rune, ranges ...*RangeTable) bool

file1.txt

package main

import (
    "fmt"
    "unicode"
)

func main() {
    for _, r := range "あいうえおアイウエオｱｲｳｴｵ" {
        fmt.Println(string(r), "is Hiragana", unicode.In(r, unicode.Hiragana))
        fmt.Println(string(r), "is Katakana", unicode.In(r, unicode.Katakana))
    }

}

file2.txt

func ToLowerSpecial(_case unicode.SpecialCase, s string) string

file3.txt

type CaseRange struct {
        Lo    uint32
        Hi    uint32
        Delta d
}

file4.txt

type d [MaxCase]rune

file5.txt

unicode.CaseRange{
            Lo:    ...,
            Hi:    ...,
            Delta: [unicode.MaxCase]rune{0, 0x131 - 0x49, 0},
}