Documentation for prefix
constant assembled from the following types:
constant prefix declares that the value it tags is not going to change during its lifetime.
constant = pi * 2;= 6; # OUTPUT: «(exit code 1) Cannot assign to an immutable value␤
The value is assigned at compile time. Since Raku modules are precompiled automatically, constants defined in modules are not re-evaluated when the program is run. Please check the section on constants in the Terms page for additional information.