(title)  class X::Undeclared 

    class X::Undeclared does X::Comp

 

Thrown when the compiler encounters a symbol that has not been declared, but needs to be. Example

    $x

    ===SORRY!===
    Variable $x is not declared

 

(head2)  symbol 

Returns the name of the undeclared symbol

(head2)  what 

Returns the kind of symbol that was not declared (for example variable, type, routine). Since The symbol wasn't declared, the compiler sometimes has to guess (or rather disambiguate) what kind of symbol it encounter that wasn't declared. For example if you write

    say a

 

Then the disambiguation defaults to reporting a missing subroutine, even though declaring a constant a = 'a' would also make the error go away.