function is_equivalent_type_by_field()

in src/append.jl [298:315]


function is_equivalent_type_by_field(T1, T2)
    n1 = fieldcount(T1)
    n2 = fieldcount(T2)
    n1 != n2 && return false

    for i = 1:n1
        fieldname(T1, i) == fieldname(T2, i) || return false

        if fieldtype(T1, i) == fieldtype(T2, i)
            continue
        elseif isstructtype(T1) && isstructtype(T2)
            is_equivalent_type_by_field(T1, T2) || continue
        else
            return false
        end
    end
    true
end