definitly not. 
use FTest;

my $test = new FTest ();

print foreach $test->foo;
print for     $test->foo;

[download]
Meanwhile in a module 
package FTest;

sub new { return bless {}, shift; }
sub foo { return 1; }

1;

[download]
That code prints "11". I you were correct that would be an endless loop.

In reply to Re^4: sub that sets $_ by holli
in thread sub that sets $_ by holli

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