Basically to make it look like a scalar when it comes to broadcasting because pairs (perhaps dubiously) have shape:
julia> (1 => 2) .+ [3, 4]
2-element Array{Int64,1}:
4
6
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Basically to make it look like a scalar when it comes to broadcasting because pairs (perhaps dubiously) have shape:
julia> (1 => 2) .+ [3, 4]
2-element Array{Int64,1}:
4
6