Hi,
I would do a while as the loop is a conditional loop :
function test(x::Vector{Float64})
i = 1
while i <= length(x) && x[i] != 0.0
i += 1
end
return i - 1
end
or I would use a return inside the for loop even though I prefer to avoid a
return in the middle of a function. Using a loop variable outside the loop
looks ugly to me. But it's a matter of taste.
On Saturday, May 17, 2014 1:59:02 PM UTC+2, Hans W Borchers wrote:
>
> Yesterday I implemented a function calculating arc length of curves (to
> the last digit) when I came across the following stumbling blocks. Image
> the following function where I leave a for-loop with a 'break' statement:
>
> function testfun1(x::Vector{Float64})
> for i = 1:length(x)
> if x[i] == 0.0
> break
> end
> end
> return i-1
> end
>
> julia> testfun([1.0, 2.0, 3.0, 0.0, 1.0])
> ERROR: i not defined
> in testfun at none:7
>
> I understand that the scope of the loop variable is restricted to the loop
> itself. What is the best way to "export" i to the outside? For the
> moment I settled with defining i before the loop.
>
>
