structintersect.jl

structintersect.jl

# courtesy of Mason Protter on the Julia Slack
@generated function structintersect(a::NamedTuple{a_names}, b::NamedTuple{b_names}) where {a_names, b_names}
    names = Tuple(intersect(a_names, b_names))
    fields = Expr(:tuple, (:(getproperty(a, $(QuoteNode(name))), getproperty(b, $(QuoteNode(name)))) for name in names)...)
    quote
        NamedTuple{$names}($fields)
    end
end