Allow for recursive merge of NamedTuples

[stakaz]

Hello, it would be great, when something like this:

Base.merge(front::NamedTuple, tail::NamedTuple...) = merge(merge(front, tail[1]), tail[2:end]...)

would be available in Base.

It is a very common thing to merge multiple tuples together and would be really a sweet sugar. like this:

julia> A = (a = 1, b = 1);
julia> B = (a = 2, c = 2);
julia> C = (b = 3, d = 2);
julia> merge(A,B,C)
(a = 2, b = 3, c = 2, d = 2)

Are there any reasons this is not in Base?

Thanks

[JeffBezanson]

Yes, this could be added.

[jpsamaroo]

I created a small PR, using @stakaz 's function definition almost verbatim. It seems to pass namedtuple tests, but I hope I didn't miss something...

[fredrikekre]

#29259