String Count.md

let count1_1 = "1".count /* 1 */
let count1_2 = "1".utf8.count /* 1 */
let count1_3 = "1".utf16.count /* 1 */

let count2_1 = "a".count /* 1 */
let count2_2 = "a".utf8.count /* 1 */
let count2_3 = "a".utf16.count /* 1 */

let count3_1 = "A".count /* 1 */
let count3_2 = "A".utf8.count /* 1 */
let count3_3 = "A".utf16.count /* 1 */

let count4_1 = "あ".count /* 1 */
let count4_2 = "あ".utf8.count /* 3 */
let count4_3 = "あ".utf16.count /* 1 */

let count5_1 = "亜".count /* 1 */
let count5_2 = "亜".utf8.count /* 3 */
let count5_3 = "亜".utf16.count /* 1 */

let count6_1 = "⭕".count /* 1 */
let count6_2 = "⭕".utf8.count /* 3 */
let count6_3 = "⭕".utf16.count /* 1 */

let count7_1 = "👪".count /* 1 */
let count7_2 = "👪".utf8.count /* 4 */
let count7_3 = "👪".utf16.count /* 2 */