Re: [NoW] About numeric for-loop

["Soni \"They/Them\" L." <fakedme@...>]

On 2019-01-17 11:52 a.m., Albert Chan wrote:
> > > function loop(e1,e2,e3)
> > > >     local i, n = -1, math.floor((e2-e1)/e3)
> > > >     if e1 + n * e3 == e2 then n = n+1 end
> > > >     return function()
> > > >         i = i + 1
> > > >         if i < n then return e1 + i*e3 end
> > > >     end
> > > > end
> Uh ... above can be simplified:
>
> function loop(e1, e2, e3)
>      local i, n = -1, (e2-e1)/e3
>      return function()
>          i = i + 1
>          if i <= n then return e1 + i*e3 end
>      end
> end

See also the implementation details of 
https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html