Swift 字符

let char1: Character = "A"
let char2: Character = "B"

print("Value of char1 \(char1)")
print("Value of char2 \(char2)")

Value of char1 A
Value of char2 B

// Following is wrong in Swift 4
let char: Character = "AB"

print("Value of char \(char)")

// Following is wrong in Swift 4
let char1: Character = ""
var char2: Character = ""

print("Value of char1 \(char1)")
print("Value of char2 \(char2)")

for ch in "Hello" {
   print(ch)
}

H
e
l
l
o

var varA:String = "Hello "
let varB:Character = "G"

varA.append( varB )

print("Value of varC = \(varA)")

Value of varC = Hello G