Very smart, thx
Paul
W dniu 2015-10-26 o 23:18, David Epstein pisze:
A one-liner, with type conversion to get an integer back:
*convert(Int64,floor(x/10^(floor(log10(x)))))*
On Saturday, October 24, 2015 at 11:40:03 AM UTC-4, Michele Zaffalon
wrote:
There is also the builtin
http://docs.julialang.org/en/latest/stdlib/numbers/#Base.digits
<http://docs.julialang.org/en/latest/stdlib/numbers/#Base.digits>
On Sat, Oct 24, 2015 at 3:51 PM, Tamas Papp <tkp...@gmail.com
<javascript:>> wrote:
A trivial (but not necessarily the fastest) solution is
function firstdigit(i,base=10)
while (i >= base)
i = div(i,base)
end
i
end
Best,
Tamas
On Sat, Oct 24 2015, paul analyst <paul.a...@mail.com
<javascript:>> wrote:
> How to get first number from Int64
>
> julia> lista[3]
> 464
>
> julia> eltype(lista[3])
> Int64
>
> julia> length(lista[3])
> 1
>
> julia> lista[3][]
> 464
>
> julia> lista[3][1]
>
> I need the first "4"
> Paul
