CODEWITHSUNDEEP
flutterdart
evals
evals

Reputation: 1869

add nested map value like Map<String,Map<String,String>>

var stars = new Map<String,Map<String,String>>();
  Map<String,String> xx = {
    'test' : 'test'
  };
  stars.putIfAbsent('String', xx);

im getting this error the argument type Map<String,String> cant be assigned to the parameter type Map<String,String>Function(), i don't know what's this Function() at the end of the map, i know this maybe a stupid question but i really dont know where to read about it because i found nothing helpful at official dart docs . thanks in advance

Upvotes: 0

Views: 172

Answers (1)

Ovidiu
Ovidiu

Reputation: 8714

putIfAbsent requires the 2nd parameter to be a function, not a value. Try this code:

stars.putIfAbsent('String', () => xx);

Upvotes: 2

Related Questions