Q: type 'String' is not a subtype of type '(dynamic) => dynamic'

Question

I have a map like:

Map<String, dynamic> myMap; // do something to add data to myMap

I want to update a key:value in myMap, i tried:

myMap.update(mykey, '0' as dynamic);

But i recive an error:

Unhandled Exception: type 'String' is not a subtype of type '(dynamic) => dynamic'

if you want to pass string then use Map<String, String> instead of dynamic. — Hussnain Haidar
– Hussnain Haidar, Commented Oct 13, 2019 at 16:11
stackoverflow.com/questions/53376518/… see here looks like same question. — Hussnain Haidar
– Hussnain Haidar, Commented Oct 13, 2019 at 16:34

jamesdlin · Accepted Answer · 2019-10-13 16:41:37Z

1

Map.update takes a function as its second argument. It doesn't seem like you need to use Map.update; you can just do myMap[myKey] = '0';.

answered Oct 13, 2019 at 16:41

jamesdlin

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