import constants from ArrayInterfaceCore

Author: Tokazama

lib/ArrayInterfaceCore/src/ArrayInterfaceCore.jl

@@ -34,6 +34,8 @@ parameterless_type(x::Type) = __parameterless_type(x)
 
 const VecAdjTrans{T,V<:AbstractVector{T}} = Union{Transpose{T,V},Adjoint{T,V}}
 const MatAdjTrans{T,M<:AbstractMatrix{T}} = Union{Transpose{T,M},Adjoint{T,M}}
+const UpTri{T,M} = Union{UpperTriangular{T,M},UnitUpperTriangular{T,M}}
+const LoTri{T,M} = Union{LowerTriangular{T,M},UnitLowerTriangular{T,M}}
 
 @inline static_first(x) = Static.maybe_static(known_first, first, x)
 @inline static_last(x) = Static.maybe_static(known_last, last, x)

src/ArrayInterface.jl

@@ -28,6 +28,8 @@ import ArrayInterfaceCore: axes, axes_types, lazy_axes, LazyAxis
 import ArrayInterfaceCore: size, known_size, known_length, static_length
 # managing immutables
 import ArrayInterfaceCore: ismutable, can_change_size, can_setindex, deleteat, insert
+# constants
+import ArrayInterfaceCore: MatAdjTrans, VecAdjTrans, UpTri, LoTri
 
 using Static
 using Static: Zero, One, nstatic, eq, ne, gt, ge, lt, le, eachop, eachop_tuple,