Swift 字符串

多行字符串文字

/*
 
 老师说: "上课!"
 同学们 : “老师好”
 */
let quotation = """

老师说: "上课!"
   同学们 : “老师好”
"""

/*
 Escaping the first mark """
 Escaping the second mark """
 */
let mark = """
Escaping the first mark \"""
Escaping the second mark \"""
"""

初始化空字符串

var emptyString = ""

• 或者用 初始化语法

var emptyString = String()

• 初始化一个字符串后将此字符串的值传递给一个函数或者赋给其他字符串时是复制此字符串的值

var emptyString = String()
var name = "Roy"
emptyString = name
name = "Lily"
print(emptyString) // Roy