老師教的真好,對(duì)於沒(méi)接觸過(guò)程式語(yǔ)言的我,也能聽(tīng)懂,期待老師的第二季
2016-04-05
let s = String(format: "one third is %.2f", 1.0/3.0)
2016-04-02