string interpolation

โ–ถ๏ธŽ ์›๋ฌธ ๋งํฌ ๊นƒํ—ˆ๋ธŒ ์ฃผ์†Œ https://github.com/Taehyeon-Kim/100DaysOfSwift/blob/master/day1.md
taeeekki
'string interpolation' ํƒœ๊ทธ์˜ ๊ธ€ ๋ชฉ๋ก