how to append an array of dictionaries to another array

Question

I tried to append an array of dictionaries which are coming from server to a globally declared array.but i am getting an error like "Cannot convert value of type '[Any]' to expected argument type '[String : Any]'"if anyone helps me would be great.Thanks in advance

var pro = [[String:Any]]()

    var productsdetails = Array<Any>()
    productsdetails = userdata.value(forKey: "products") as! Array
     print("response\(productsdetails)")
               self.pro = self.pro.append(productsdetails)
                    print(self.pro)

still getting same error "Cannot convert value of type '[[String : Any]]' to expected argument type '[String : Any]'" — Swathi
– Swathi, Commented Feb 12, 2019 at 5:34

Pradip Patel · Accepted Answer · 2019-02-12 05:50:52Z

1

Use this code like below, i hope this works

var pro = [[String:Any]]()

if let productsdetails = userdata.value(forKey: "products") as? [[String:Any]] {
    print("response\(productsdetails)")
    self.pro.append(productsdetails)
    print(self.pro)
}

edited Feb 12, 2019 at 5:50

answered Feb 12, 2019 at 5:37

Pradip Patel

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2 Comments

Swathi Over a year ago

" self.pro = self.pro.append(productsdetails)" after using this code ,then also getting same

Ankur Lahiry Over a year ago

this is not the answer

Ankur Lahiry · Accepted Answer · 2019-02-12 06:20:02Z

0

to solve this iterate

var pro = [[String:Any]]()

if let productsdetails = userdata.value(forKey: "products") as? [[String: Any]] {
    for details in productsdetails {
       pro.append(details)
    }

}

or you may use directly self.pro = productsdetails if you not to want iterate

**image shows [String : String] as I have used [String : String] instead of [String : Any]*

edited Feb 12, 2019 at 6:20

answered Feb 12, 2019 at 6:06

Ankur Lahiry

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Comments

Jamil Hasnine Tamim · Accepted Answer · 2019-02-12 07:16:54Z

0

You can try this: (Swift-4.2)

var data: [String: Any] = [
    "key1": "example value 1",
    "key2": "example value 2",
    "items": []
]

for index in 1...3 {

    let item: [String: Any] = [
        "key": "new value"
    ]

    // get existing items, or create new array if doesn't exist
    var existingItems = data["items"] as? [[String: Any]] ?? [[String: Any]]()

    // append the item
    existingItems.append(item)

    // replace back into `data`
    data["items"] = existingItems
}

Answer same as: Append to array in [String: Any] dictionary structure

answered Feb 12, 2019 at 7:16

Jamil Hasnine Tamim

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Comments

Uzair Dhada · Accepted Answer · 2019-02-12 07:23:30Z

Can you show us your response which has key products? As there is mismatch with the variable pro and productdetails. As i see pro holds values as "Array of Dictionary with key as String type and Value as Any type" which again has Array above it and productdetails is expecting Array of Any type not the Array of Dictionary Type. Assuming your products has Array of String Type or can be even a class object type you can do it as below.

var pro = Array<Any>() //Or You can make Array<String>() or Array<CustomClass>()

var userdata:[String:[String]] = ["products":["One","Two","Three"]]

var productsdetails = Array<Any>()
productsdetails = userdata["products"] ?? []
print("response\(productsdetails)")
pro.append(productsdetails)

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