Explicit Globals

The optional global keyword can be used to explicitly declare global variables.

To enable it, simply do:

pluto
pluto_use global

Then it can be used like this:

pluto
global a = 1

Being identical to the following code:

pluto
a = 1

Compiler Warnings

When the global keyword is enabled, an 'implicit-global' warning is raised for any globals declared without it:

pluto
pluto_use global
a = 1

file.pluto:3: warning: implicit global creation [implicit-global]
    3 | a = 1
      | ^^^^^ here: prefix this with 'global' to be explicit