[Flutter] Flexible, Expanded

children: [
  Flexible(child: Container(), flex: 3,),
  Flexible(child: Container(), flex: 7),
],

3:7로 분할한다

 

children: [
  Expanded(child: Container(), flex: 3,),
  Container(width: 100,)
],

Expanded 가 flex를 1만큼 가진다 즉 전체 - 100