# How to save function output as a variable?
**URL:** https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553
**Category:** General Usage
**Tags:** function, map
**Created:** [August 9, 2022, 8:37pm UTC](https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553 "2022-08-09T20:37:15Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@albrightand](https://discourse.julialang.org/u/albrightand)
#### Post date: [August 9, 2022, 8:37pm UTC](https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553/1 "2022-08-09T20:37:16Z")
I’m new to Julia and practicing writing functions…
The function below works great, if I call it from the command line like:
```julia
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
julia> c = prime(5)
[1, 2, 3, 5]
julia> print(c)
nothing
```
What gives? See the prime function code below.
```julia
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
```
---
### Author:  [@SteffenPL](https://discourse.julialang.org/u/SteffenPL)
#### Post date: [August 9, 2022, 8:48pm UTC](https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553/2 "2022-08-09T20:48:31Z")
I tried your example and `print(c)` works as expected.
How do you run your code (which editor, Julia version, OS)?
---
### Author:  [@albrightand](https://discourse.julialang.org/u/albrightand)
#### Post date: [August 9, 2022, 9:11pm UTC](https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553/3 "2022-08-09T21:11:20Z")
Code was written in VS Code
Julia version 1.7.3
Windows 10
---
### Author:  [@albrightand](https://discourse.julialang.org/u/albrightand)
#### Post date: [August 9, 2022, 9:11pm UTC](https://discourse.julialang.org/t/how-to-save-function-output-as-a-variable/85553/4 "2022-08-09T21:11:59Z")
Ok, I restarted Julia and now it works fine. D’oh!
Thanks for the quick reply, @SteffenPL