Question

i have the following List

List myList = [
{ name : Alex },
{ name : Ali },
{ name : jack },
{ name : Alex },
{ name : Alex },
];

Now i want update all item that the name == Alex to Andy

so i tried the following

int wantedIndex =  myList.indexWhere((element) =>  element[ name ]== Alex );
  myList[wantedIndex] = { name : Andy } ;

since the indexWhere is only get the first target index so it will update one item only.

so How could i achieve this with all item that == Alex ?

Answer 1

You could use map method.

myList.map((item) {
  if (item[ name ] ==  Alex ) item[ name ] =  Andy ;
}).toList();

print(myList); // [{name: Andy}, {name: Ali}, {name: jack}, {name: Andy}, {name: Andy}]

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