julia> test = (a=1, b="yes", c=1.0, f=log)
(a = 1, b = "yes", c = 1.0, f = log)
julia> const MyStruct = typeof(test)
MyStruct
julia> Base.show(io::IO, ::Type{MyStruct}) = print(io, "MyStruct")
julia> [test]
1-element Vector{MyStruct}:
(a = 1, b = "yes", c = 1.0, f = log)
julia> test + 1
ERROR: MethodError: no method matching +(::MyStruct, ::Int64)
…
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