map4<R extends Object> method
Implementation
@pragma('vm:prefer-inline')
TResolvableOption<Object> map4<R extends Object>(R Function(T) mapper) {
return map((e) => e.map3((e) => mapper(e as T))).reduce();
}
@pragma('vm:prefer-inline')
TResolvableOption<Object> map4<R extends Object>(R Function(T) mapper) {
return map((e) => e.map3((e) => mapper(e as T))).reduce();
}