Let’s say the type of the elements of the input is NamedTuple{a::T1,b::T2,c::T3} where {T1<:Union{Int,Missing},T2<:Union{Float64},T3<:Union{String,Missing}}
Een Element A [ i ] {\displaystyle A[i]} ass ee Blat, wann 2 i > n {\displaystyle 2i>n} gëllt. ( n {\displaystyle n} ass d'Unzuel vun den Elementer)