[Gretl-devel] Re: flatten() behavior

On Sun, 14 Jul 2019, Sven Schreiber wrote:

> about the new 'flatten' function: For the case of string arrays I think > it would be good to have some choice about the separator. Currently a > newline (\n) is inserted after each string, which is reasonable. > However, there's an unused argument ('vcat') which could be used to > choose for example a blank (" ") instead. An alternative would be to > introduce another optional argument where the user could specify the > string for joining (or separating) the input strings. > > This would be useful if the input array actually holds textual > representations of numbers, which can then be processed with sscanf. > > Both alternatives would be backwards compatible, but flatten is so new > that that's not very important I guess. Yes, might be worthwhile. The boolean "vcat" argument could be renamed and made to use space for strings. (I'm less keen on making it type-mutable to accept any separator.) Want to file a feature request (given that this is not going to acted upon right away)?