Symbol(3p) Perl Programmers Reference Guide Symbol(3p)

Symbol(3p) Perl Programmers Reference Guide Symbol(3p) # Symbol(3p) Perl Programmers Reference Guide Symbol(3p) NNAAMMEE # Symbol - manipulate Perl symbols and their names SSYYNNOOPPSSIISS # use Symbol; $sym = gensym; open($sym, '<', "filename"); $_ = <$sym>; # etc. ungensym $sym; # no effect # replace *FOO{IO} handle but not $FOO, %FOO, etc. *FOO = geniosym; print qualify("x"), "\n"; # "main::x" print qualify("x", "FOO"), "\n"; # "FOO::x" print qualify("BAR::x"), "\n"; # "BAR::x" print qualify("BAR::x", "FOO"), "\n"; # "BAR::x" print qualify("STDOUT", "FOO"), "\n"; # "main::STDOUT" (global) print qualify(\*x), "\n"; # returns \*x print qualify(\*x, "FOO"), "\n"; # returns \*x use strict refs; print { qualify_to_ref $fh } "foo! ...