[julia-users] leaky if semantics

[David van Leeuwen]

Hello, 

According to 
http://docs.julialang.org/en/release-0.4/manual/control-flow/#man-conditional-evaluation
 variables 
in if blocks do not introduce lexical scope, and hence are available 
afterwards.   This makes sense and is what I need. 

However, it seems afterwards relates to position in the encapsulating 
block, and not to execution time. 

function testif()
    for i in 1:2
        if i==1
            x = 0
        end
        if x==2
            println(x)
        end
    end
end


This code gives me an undefined `x` in the print statement, where I would 
have expected `x` to be initialized in the first iteration.  It seems I 
need to define `x` outside the for loop, even though I don't need it there. 
 

Is this interpretation in Julia intentional?

Cheers, 

---david