definitely_unassigned_late_local_variable

The late local variable '{0}' is definitely unassigned at this point.

The analyzer produces this diagnostic when definite assignment analysis shows that a local variable that's marked as late is read before being assigned.

The following code produces this diagnostic because x wasn't assigned a value before being read:

void f(bool b) {
  late int x;
  print(x);
}

Assign a value to the variable before reading from it:

void f(bool b) {
  late int x;
  x = b ? 1 : 0;
  print(x);
}

除非另有说明，文档之所提及适用于 Dart 3.7.3 版本，本页面最后更新时间: 2025-05-08。 查看文档源码 或者 报告页面问题。