Type Alias GradientList 

pub type GradientList = Vec<Option<NodeId>>;

Result of a backward rule: one gradient NodeId per forward input slot, with None for inputs that aren’t differentiable (e.g. the index tensor of IndexSelect, or the block table of PagedAttn).

Length must match the forward op’s inputs slice.

Aliased Type

pub struct GradientList { /* private fields */ }