Day-2  Collections



1. Difference between let and var ?
2. What is the difference between below declaration
var a: Int = 100

var a = 10

1. What is array and write syntax in swift
2. What is dictionary and write syntax in swift
3. How to specify a data type with Dictionary and Array
4. What is set and syntax
5. Difference between Array and Set
6. Difference between Array and NSArray
7. Write a program to find Odd or Even using function with return type
8. What is Defer and how to use function inside Defer
9. How to use for loop in swift
10. Using for loop how to iterate the array in swift
11. Print 1 to 100 using for loop
12. Print 100 to 1 using for loop
13. Syntax for Switch statement and example program
14. What is Control Transfer Statements (Continue,Break,fallthrough,return)
15. What is Tuples and write a example program
16. How to use function in tuples
17. What is Optional chaining and explain with syntax
18. What is Optional binding and explain with syntax?
19. What is Guard statement and explain with syntax?
20. Difference between if let and guard.(Explain detail)
21. What is Lazy property with example
22. What is Optional ?
23. What is Forced unwrapping
24. Difference between Single ? and Double ??
25. What is Generic Function?
26. What is Higher order function (Sort,Map,Filter)
27. Convert Int to String in Swift
28. Convert String to Int  in swift
29. What is Extension and use of Extension
30. Use Extension in Color code and String
31. What is Generics
32. What is Closures and types
33. What all are the types in Closure
34. What is @escaping closure and  @nonescaping closure
35. What is Enum and types
36. What is Strong and Weak
37. What  is Access specifier in swift and types
38. What is Class?
39. What is Structure
40. Difference between Class and Structure with Examples
41. What is COMPLETION HANDLER? How is it used?
42. What is synchronous and asynchronous?
43. What is a singleton pattern?
44. Difference between Objective-C and Swift
45. Swift Feature and listed some features
46. Swift Current Version
47. What is latest version in iOS
48. What current version in XCode
49. What is UIKIT
50. What is Foundation
51. What all are other frameworks used in your project
52. What is stored property and computed property