how separate string into key/value pair in dart?

Question

how can a string be separated into key/value pair in dart? The string is separated by a "=". And how can the pair value be extracted?

    main(){
  
  var stringTobeSeparated = ['ab = cd','ef = gh','ld = kg'];

Map<String ,dynamic> map = {};
    for (String s in stringTobeSeparated) {
          var keyValue = s.split("=");
    //failed to add to a map , to many positiona arguments error
         map.addAll(keyValue[0],keyValue[1]);
      
        
        }
}

i'm retrieving data from an api i need put it in pair value format — Mala, Sep 11 '20 at 16:52
if your familiar with java its possible retrieve key value after separating a string. So i'm asking for similar thing to do in dart — Mala, Sep 11 '20 at 16:59
You show some code but you make no mention of the results of that attempt or why it's not working. — Christopher Moore, Sep 11 '20 at 17:04

score 1 · Accepted Answer · answered Sep 11 '20 at 17:10

The split() function gives you a List of Strings, so you just need to check if the length of this List is equal to 2 and then you can add those values in a Map like this:

Map<String, String> map = {};
for (String s in stringTobeSeparated) {
    var list = s.split("=");
    if(list.length == 2) {
        // list[0] is your key and list[1] is your value
        map[list[0]] = list[1];
    }
}

score 0 · Answer 2 · answered Sep 11 '20 at 17:42

You can use map for this, the accepted answer is correct, but since your string looks like this

var stringTobeSeparated = ['ab = cd','ef = gh','ld = kg'];

I would rather use regex to remove spaces from final result (replace the line with split with this):

var list = s.split(RegExp(r"\s+=\s+"));

how separate string into key/value pair in dart?

2 Answers2