is there some simple, compact way way to add an element or list to a list?
say i want a list to be [1,2] or [1,2,3] depending on flag. is there an elegant one-liner that will do that? i'm cleaning up some code and what should be a simple thing looks more important than it should just because of the number of lines it takes. i thought [[1 2] flag ? [3] : []] would do it, but julia> [[1 2] false ? [3] : []] ERROR: mismatch in dimension 1 in cat_t at abstractarray.jl:681 in hcat at abstractarray.jl:720 thanks, andrew
