ios - How to replace value in array of dictionary in swift? -

i have array of dictionary, trying store in nsuserdefault contain <null> app crash, can replace <null> ""? there way resolve issue?

this array of dictionaries:

var array = (                             {                     clinicid = "<null>";                     "patient_surveyid" = 1956;                     "patient_treatment_planid" = "<null>";                     physicianid = "<null>";                 },                             {                     clinicid = "<null>";                     "patient_surveyid" = 1956;                     "patient_treatment_planid" = "<null>";                     physicianid = "<null>";                 },     ) 

so have array of dictionaries

let list: [[string:any]] = [] 

and each dictionary of type [string:any].

this code replace nsnull values dictionaries ""

let list: [[string:any] = []  let updateddict = list.map { (dict) -> [string:any] in     let keyswithemptstringvalue = dict.filter { $0.1 nsnull }.map { $0.0 }     var dict = dict     key in keyswithemptstringvalue {         dict[key] = ""     }     return dict } 

from nsmutablearray [[string:any]]

to convert nsmutablearray swift generic array please try code

let array = nsmutablearray() let list: [[string:any]] = array.flatmap { $0 as? [string:any] }