Dart - Help me understand how this code on Dart works
return new Future<List>(() { res.toList() // <== 1.) registers a future for later execution // <== 3.) execute `toList()` .then((List<mysql.Row> rows) { rows.forEach((mysql.Row row) { // <== 4.) execute rows.forEach data.add({name: row.name, email: row.email}); }); }); return data; // <== 2.) return data});3.) is executed after the code calling the above code has finished all sync execution
return new Future<List>(() { return res.toList() // <== returning the future keeps the async parts connected // and one is executed after the other .then((List<mysql.Row> rows) { rows.forEach((mysql.Row row) { // <== 4.) execute rows.forEach data.add({name: row.name, email: row.email}); }); }) .then((_) data); // <== the same here, return data **after** the previous statements are finished });});