Literal expression for array of vectors

General Usage
, , ,
5

It’s ridiculous, but you can wrap it in another layer of 1-element vectors to be hvcat-ed because it’s not recursive:

julia> [[Int64[1]] [Int64[]];
        [Int64[]] [Int64[1]]]
2×2 Matrix{Vector{Int64}}:
 [1]  []
 []   [1]

julia> [Int64[1] Int64[];
        Int64[] Int64[1]]
ERROR: DimensionMismatch: mismatched height in block row 1 (expected 1, got 0)
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