How to save function output as a variable?

General Usage
,
1

I’m new to Julia and practicing writing functions…

The function below works great, if I call it from the command line like:

julia> prime(5)
[1, 2, 3, 5]

BUT if I try to set the output of the function to a variable, then it doesn’t work

julia> c = prime(5)
[1, 2, 3, 5]
julia> print(c)
nothing

What gives? See the prime function code below.

function prime(n::Integer)
    # Find all prime numbers between 1 and n
    num_all = collect(1:n);
    is_prime = trues(n)
    for i in num_all
        d_iv = collect(2:i-1)
        for ii in d_iv
            if i%ii == 0
                is_prime[i] = false
                continue
            end
        end
    end
    c = num_all[is_prime]
    return c
end
2

I tried your example and print(c) works as expected.

How do you run your code (which editor, Julia version, OS)?

3

Code was written in VS Code
Julia version 1.7.3
Windows 10

4

Ok, I restarted Julia and now it works fine. D’oh!

Thanks for the quick reply, @SteffenPL

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