Swift how can I make dictionary array? - arrays

Question

object-C style
#interface TestViewController:UIViewController{
NSArray *dataList;
}
#end
#implementation TestViewController
- (void)viewDidLoad
{
[super viewDidLoad];
NSDictionary *dict1 =[[NSDictionary alloc] initWithObjectsAndKeys:#"32",#"age",#"andy",#"name", nil];
NSDictionary *dict1 =[[NSDictionary alloc] initWithObjectsAndKeys:#"34",#"age",#"smith",#"name", nil];
NSDictionary *dict1 =[[NSDictionary alloc] initWithObjectsAndKeys:#"27",#"age",#"jonathan",#"name", nil];
dataList = [[NSArray alloc]initWithObjects:dict1,dict2,dict3,nil];
}
#end
I want to make same code in Swift
so I typed swift style as follows
class ViewController: UIViewController {
var datalist = [Dictionary]() //Compile Error -> "Missing argument for parameter #1 in call"
// I can't understand error. What does it mean?
override func viewDidLoad() {
super.viewDidLoad()
let dict1 = ["age":"32","name":"andy"]
let dict2 = ["age":"34","name":"smith"]
let dict3 = ["age":"27","name":"jonathan"]
datalist = [dict1,dict2,dict3] //Compile Error -> 'ViewController' does not have a member named 'datalist'
}
}
but 2 Error
I don't know why issue error
Can you help me?

Answer 1

Arrays in swift do not take a parameter, you just create one by setting the array equal to [] (with or without values), for example:
var array : [Int] = []
var array2 = [1,2,3]
would create an array of integers.
Also, Dictionaries in swift need to know the types of the key and value, for example:
Dictionary<String, String>
But there is also a shorthand for creating dictionaries that looks like:
[String:String]
(Assuming String is the type for your key and value).
So for your example, you could rewrite your datalist object to be declared as:
var datalist : [[String:String]] = []
Then you can use the datalist object in the way you are using it, or by appending [String:String] objects to it.