invalid constant
Represents an unassigned child position. The given child may be in the process of moving from one position to another.
Implementation
static const ChildVicinity invalid = ChildVicinity(xIndex: -1, yIndex: -1);Represents an unassigned child position. The given child may be in the process of moving from one position to another.
static const ChildVicinity invalid = ChildVicinity(xIndex: -1, yIndex: -1);