Question/request: How to create a BlockArray from an array of blocks?

[tkf]

In #61 (comment) I wrote

using BlockArrays

function blocks_to_vector(blocks)
    R = eltype(blocks)
    T = eltype(R)
    @assert R <: AbstractVector
    ba = BlockArray{T, 1, R}(undef_blocks, size.(blocks, 1))
    ba.blocks .= blocks
    return ba
end

using FillArrays
x = blocks_to_vector([Fill(111.0, 4), Fill(222.0, 3)])

to create a BlockVector from a vector of blocks.

I first thought this was awkward and I was missing an API to do this but after finding #30 (comment) I started to think that there was no API to do this. Is it correct? If so, does it make sense to add an API for this?

(Note: #40 looks somewhat relevant)

[dlfivefifty]

Yes that appears to be missing. The natural syntax is _BlockArray(blocks), but that has the problem of not being a public API.