JuliaLang/julia — comment on commit c0823073309f2d153b1a6b617e85e63e4324dacd
File:  line 0
By JeffBezanson:

I noticed that having vcat and hcat defined for AbstractVector is useful for concatenating with ranges:

```
julia> [1:3, [4,5,6]]
[1, 2, 3, 4, 5, 6]
```