To finish this off, if your function ends with `return` by itself, that means
that your function effectively returns the value `nothing`.
— John
On May 23, 2014, at 3:09 PM, Leah Hanson <astriea...@gmail.com> wrote:
> Functions return the value that the final expression in them evaluated to.
>
> function foo(x)
> x +=2
> 5
> end # => always returns 5
>
> function bar(x)
> # blah blah ...
> println("hello world")
> end # => always returns nothing, because that's what println returns
>
> -- Leah
>
>
> On Fri, May 23, 2014 at 5:00 PM, Dom Luna <dluna...@gmail.com> wrote:
> That cleared it up, thanks! Do functions that don't explicitly return
> anything then implicitly return Nothing?
>
> Sorry I didn't catch the FAQ section, might it be better to have that as a
> short section in types?
>
> Dom
>
>
> On Friday, May 23, 2014 3:19:35 PM UTC-4, Stefan Karpinski wrote:
> This FAQ entry may answer the question:
>
> http://docs.julialang.org/en/latest/manual/faq/#nothingness-and-missing-values
>
> If not, maybe we can expand it or clarify whatever's not clear.
>
>
> On Fri, May 23, 2014 at 2:40 PM, Dom Luna <dlun...@gmail.com> wrote:
> I just have general curiosity about the Nothing type, is there anything one
> should particularly know about it? Is it similar to a None type that one
> would typically find in pattern matching, ex. an Option type where it can be
> either Something or None, etc.
>
> I feel like Nothing and patterns for its use aren't well documented to this
> point.
>
> Dom
>
>
