same eltype, less memory

Author: dkarrasch

src/linearcombination.jl

@@ -157,6 +157,9 @@ end
 function Base.:(*)(A::LinearCombination{<:Any,<:Tuple{Vararg{OOPFunctionMap}}}, x::AbstractVector)
     mapreduce(L -> L * x, Base.add_sum, A.maps)
 end
+function Base.:(*)(A::LinearCombination{<:Any,<:Tuple{Vararg{OOPFunctionMap{T}}}}, x::AbstractVector) where {T}
+    mapreduce(L -> L * x, (x, y) -> x .+= y, A.maps)
+end
 
 _unsafe_mul!(y, A::LinearCombination{<:Any,<:Tuple{Vararg{OOPFunctionMap}}}, x::AbstractVector) =
     copyto!(y, A*x)