Day11 swift2.0-string

**day 11

**swift 2.0 String

var arr = [1,"2",3.3]

Print("\(arr)")

var dict = ["A":1,"B":2,"C":3]

(dict as nsdictionary). AllKeys

(dict as nsdictionary). Allvalues

var string = "Hello world!"

Let range = string. StartIndex. <string. StartIndex. Advancedby(5)

String. Replacerange(range, with: "Hi")

String

Print("\(string)")

Let range2 = string. EndIndex. Advancedby(-6). <string. EndIndex

String. Substringwithrange(range2)

var animals = "\u{1f60e}hoho~"

Animals. Characters. Count

var swift_string = "symbol2.0"

Let string2 = swift_string + "ahaha~"

Print("\(string2)")

Swift_string

Swift_string. Appendcontentsof("addstring")

Print("\(swift_string)")

var i = 1

For ;  i <= ; {

I*i

I + = 1

}

For var a =-6.28 ; a <= 6.28 ; a + = 0.2 {

sin(a)

cos(a)

Tan(a)

1/Tan(a)

}

var newstring = "Hello world!"

For var c in newstring. Characters {

Print("\(c)")

if c = = "R" {

c = ""

Print("\(newstring. EndIndex) ")

}

Print("\(c)")

}

Print("\(newstring)")

Day11 swift2.0-string