However, my question is: How can I disambiguate a method call on a string so that it is always resolved as a class method call, and not as a call on an IO instance?

You can't :) apparently filehandles rule the typeglob, thats why it hasn't been recommended for a long time 

$ perl -fle " sub Snacks::Ahoy { q{Nom} } open Snacks, q{>}, \q{}; pri
+nt $Snacks::{Ahoy}->() "
Nom

$ perl -fle " sub Snacks::Ahoy { q{Nom} } open Snacks, q{>}, \q{}; pri
+nt bless(\(my$q=\{Snacks}),q{Snacks})->Ahoy "
Nom

$ perl -fle " sub Snacks::Ahoy { q{Nom} } sub Snacks { q{Rice} } print
+ Snacks::->Ahoy "
Nom

$ perl -fle " sub Snacks::Ahoy { q{Nom} } open Snacks , q{<}, \q{Rice}
+; print Snacks::->Ahoy "
Can't locate object method "Ahoy" via package "IO::File" at -e line 1.

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In reply to Re: Prevent Strings From Being Interpreted As A File Handle by Anonymous Monk
in thread Prevent Strings From Being Interpreted As A File Handle by amon

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