Re: concat: domain error in concat: vector = []

[Max Alekseyev <maxale@gmail.com>]

Hi Bill,

I'd expect f(0) = g(0) = []. What's the catch here?

Regards,

Max

On Sat, Sep 15, 2018 at 6:04 PM, Bill Allombert <Bill.Allombert@math.u-bordeaux.fr> wrote:

On Sat, Sep 15, 2018 at 05:55:52PM -0400, Max Alekseyev wrote:
> Hello,
>
> Since concat(x) accepts x being a list/vector of objects to be
> concatenated, it is expected that concat([]) returns [].

Why ? Consider
f(n)=concat(vector(n,i,Str(i)))
g(n)=concat(vector(n,i,[i]~))

Given f(1),f(2),..., g(1),g(2),...  what do you 'expect' f(0) and g(0)
to be ?

Cheers,
Bill