isacjunior

// GOOD

void main() { }

_Foo _bar() => _Foo();

class _Foo {
  int _foo() => 42;
}

isacjunior

// BAD

main() { }

_bar() => _Foo();

class _Foo {
  _foo() => 42;
}

isacjunior

linter:
  rules:
    - always_declare_return_types
    - always_put_control_body_on_new_line

isacjunior

linter:
  rules:
    - always_declare_return_types
    - always_put_control_body_on_new_line
    - always_put_required_named_parameters_first
    - always_require_non_null_named_parameters
    - always_specify_types
    - annotate_overrides
    - avoid_annotating_with_dynamic
    - avoid_as

isacjunior

class CustomText extends StatelessWidget {
 final String text;

 CustomText({ @required this.text });

 @override
 Widget build(BuildContext context) {
   return Center(
     child: Text(text),
   );

isacjunior

class MyCount extends StatefulWidget {
  @override
  _MyCountState createState() => _MyCountState();
}

class _MyCountState extends State<MyCount> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {

isacjunior

class CustomText extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text('Flutter'),
    );
  }

}

isacjunior

import { StatusBar, StatusBarStyle } from 'react-native'
import { useEffect } from 'react'

function useStatusBar(style: StatusBarStyle) {
  useEffect(() => {
    StatusBar.setBarStyle(style, true)
  }, [])
}

export default useStatusBar

isacjunior

// Response da query acima
{
  "data": {
    "peopleByIdOne": {
      "name": "Luke Skywalker"
    },
    "peopleByIdTwo": {
      "name": "C-3PO"
    }
  }

isacjunior

# Query que consulta múltiplos dados
query {
  peopleByIdOne: people(id: "1") {
    name
  }
  peopleByIdTwo: people(id: "2") {
    name
  }
}