description

# forEach method Null safety

void forEach (

1. void f(
   1. String key,
   2. dynamic value
   )

)
override

Applies `f` to each key/value pair of the map.

Calling `f` must not add or remove keys from the map.

## Implementation

    void forEach(void f(String key, dynamic value)) {
      var entries = JS('', '#.entries()', this);
      while (true) {
        var entry = JS('', '#.next()', entries);
        if (JS('bool', '#.done', entry)) return;
        f(JS('String', '#.value[0]', entry),
            convertNativeToDart_Dictionary(JS('', '#.value[1]', entry)));
      }
    }