selectedCount method
把Selectable的列表流转换为对应的选中数量流
Implementation
Stream<int> selectedCount() {
return map((event) => event.whereOrEmpty((it) => it.isSelected).length);
}
把Selectable的列表流转换为对应的选中数量流
Stream<int> selectedCount() {
return map((event) => event.whereOrEmpty((it) => it.isSelected).length);
}