[julia-users] Declare default value for variable if it hasn't been declared yet in local scope

[amiksvi]

Hi,

I'd like this code:


function f1()
    x = 1
    if !isdefined(:x)
        x = 2
    end
    println(x)
end

function f2()
    if !isdefined(:x)
        x = 2
    end
    println(x)
end

f1()   # prints 2, ideally should print 1
f2()   # prints 2, ideally should print 2

ideally to print:

1
2

The problem is that isdefined works at global scope only... I've found a 
trick here: https://groups.google.com/forum/#!topic/julia-dev/HgEPayeJnDM 
by Simon Kornblith, but I've been unable to adapt it to my case... Is there 
a way to do what I want?

Many thanks,