标签：message margin swift use span bsp edm user 字符串
命名：
let numberOfDogs = 6 +2;
字符串连接： let finishedMessage = username + "xx" + password;
字符串打印值： let food = "i like\(favoriteFood) because it is\(reason)"
标签：message margin swift use span bsp edm user 字符串
原文地址：http://www.cnblogs.com/yqlog/p/6194119.html
