Changing source code file has no effect?

New to Julia
1

Hello, maybe a dump question here.

I wanna experiment something that requires some changes in source code. Here I’m using Mac and the files are located in:

/Applications/Julia-0.7.app/Contents/Resources/julia/share/julia/stdlib/v0.7/InteractiveUtils/src

Somehow after modifying the files (after backup). This is nothing changed in a restarted Julia? My concept is that everything in Julia are defined in these .jl files.

Any suggestions? Thanks.

2

Code in the stdlib is compiled into the Julia system image, so modifying the source code will not have any affect unless you rebuild Julia.

2 Likes
3

oh my god :cry:

1 Like
4

There is Revise.track(Base) of the package https://github.com/timholy/Revise.jl. It think in your case you can do Revise.track(InteractiveUtils).

5 Likes
5

speaking of which, we need to run make -j .. () every time we change anything?

1 Like
6

I’m basically repeating @mauro3’s post here, but since it must not be entirely clear:

If you’re not using Revise (or Juno’s re-evaluation capability, or manual cut-and-paste redefinition):

  • If you change packages or personal code, you have to restart Julia but you don’t have to rebuild anything
  • If you change Julia’s Base module, compiler, or stdlibs: yes you have to rebuild Julia

If you are running Revise:

  • For changes to packages, it should generally happen automatically. For scripts you have to use includet
  • For changes to Base, use Revise.track(Base). Likewise use Revise.track(Statistics) if you’ve made changes to the Statistics stdlib. And so on.
11 Likes