Swift Basics-Operator

(1) Subtraction

(2) Three mesh operation, remember that the following space if the error will not be added. It is estimated that it is an apple bug.

(3) Aggregation operator, save a judgment, very humane

(4) Interval operator

2. Subtraction, wait.
6. Let A = 2
8. Let B = 3
10. var C = 0
12. C++
14. ++c
16. c+=2
18. c-=2
20. c*=2
22. c/=2
26. Trinocular operator
30. A==b? "x": "y"
34. Nil aggregation operator
38. var sa:string? = "A"
40. var sb:string = "B"
42. SA = Nil
44. Sa?? Sb
48. Interval operator
52. Closed interval
54. For index in 1 ... Ten {
56. println (Index)
58. }
62. Semi-closed interval
64. For index in 1..<10 {
66. println (Index)
68. }
72. Let arr = ["x","y","Z"]
76. For i in 0..<arr. count{
78. println (Arr[i])
80. }

Swift Basics-Operator