OK, thanks, obvious... Search results did not help much either, that was main reason of my post, perhaps soon they will...
Thanks, Kaj On Monday, July 20, 2015 at 10:20:27 PM UTC+3, Patrick O'Leary wrote: > > Julia is returning the value of `println("foo..")` from the function > `foo()`; the value of the block expression is the value of the last > expression in the block. It's turtles all the way down, so `println()` also > returns a value in the same way, etc. > > The error is because to destructure the return value into `a` and `b`, > Julia iterates the return value. The return value of `foo`, which is the > same as the return value from `println`, is something which is not iterable. > > I agree that the error message isn't very helpful, but it's also hard to > say how one would fix that. > > On Monday, July 20, 2015 at 2:09:00 PM UTC-5, Kaj Wiik wrote: >> >> I started to get a strange error while debugging my code, here's a >> simplified example: >> >> julia> function foo(a) >> println("foo..") >> end >> foo (generic function with 1 method) >> >> julia> a = foo(2) >> foo.. >> >> julia> a,b = foo(2) >> foo.. >> ERROR: `start` has no method matching start(::Nothing) >> >> >> So, the problem was a missing return value, it is strange that missing >> one value did not give error but two values.... It took a quite long time >> to track this down. Perhaps a bit more informative error message would be >> possible...? >> >> Cheers, >> Kaj >> >>