NSArray

Introduction#

Here are some useful utility functions/methods that can be used as with Array extension for ease of developer to perform certain critical operations on array with help of single line code.

Remarks#

Once, current document gets approved, will add so many enhancement for other array utilites also. This is my first document and need your assistance and approval in my effort.

Convert Array into json string

Call this function with parameter argument as array with type ‘any’. It will return you json string. Json string is used to submit array in web service call as request input parameter in Swift.

//-----------------------

let array = [["one" : 1], ["two" : 2], ["three" : 3], ["four" : 4]]

let jsonString = convertIntoJSONString(arrayObject: array)
print("jsonString - \(jsonString)")

//-----------------------

func convertIntoJSONString(arrayObject: [Any]) -> String? {

        do {
            let jsonData: Data = try JSONSerialization.data(withJSONObject: arrayObject, options: [])
            if  let jsonString = NSString(data: jsonData, encoding: String.Encoding.utf8.rawValue) {
                return jsonString as String
            }
            
        } catch let error as NSError {
            print("Array convertIntoJSON - \(error.description)")
        }
        return nil
    }