I am new to both Julia and Visual Studio.

whenever I try to subtract two numbers i.e. 3 - 5 I get 10

I am however able to add a negative number

3 - 5 gives -2 as expected

The behavior also occurs with the .- and . operators. I thought there might be something wrong with my "-" character so I tried copying and pasting from the julia page on mathematical operators (

I was unable to find any one else with the same problem. The problem appears to be limited to Visual studio as subtraction still works fine when I run Julia in terminal.

I am using Visual Studio Code 1.71.2 with the julialang 1.7.12 extension and Julia 1.8.1

EDIT-1: If I copy and paste the code from Visual Studio Code into the julia terminal (not terminal in VSC) it works. However, if I run the code using julia the-script.jl in the terminal I still get 10 for any subtractions performed. I have also tested editing the script with nano and then running it and I am encountering the same problem.

EDIT3: As was pointed out by several responders the issue was not with VS code

Thank you for your help

Could someone explain where my code is breaking the function -? I am unable to reliably break it so that I get 10 whenever I try and subtract, but I have been able to reproduce the error with the above script

# #make the neutral model that I have in R in julia and benchmark both models
# #imports
using Random



# #set the seed 
Random.seed!(125)




#set the initial arguments
num_sp_local = 10::Int64;
init_sp_abundance = 100::Int64;
mig_prob = 0.01::Float64;
#meta community is uniform
num_sp-meta = 10; #ERROR IS HERE - function redefined to be 10


#the number of time steps to run the sim for
time_steps = 100000;

for i = 1:50
    println(i - 35)
end

The error can be seen above num_sp-meta = 10; redefines the - function to be 10 irrespective of what is being subtracted.

CodePudding user response：

This has nothing to do with VS Code, changing your editor/IDE is a pointless waste of time.

As @JoachimSauer suggested, someone (maybe you?) has re-defined the - function in your Julia instance.

• Try fixing - by resetting it to Base.- like this: -(x::Int, y::Int) = Base.:-(x, y)
• That might not work, depending on how the change was originally done.
• Restart the REPL in VS Code. Perhaps the redefinition happened inside the script. Try to run 2 - 3, without running the-script first. This should work now.
• This means that the change happened inside the-script.jl. Look for redefinitions of - inside that file.

If the above still doesn't work, the problem lies in some other library or script which is run. If so, try starting Julia like this:

 julia --startup-file=no

and then run 2 - 3 or something like that.