in reply to
Re^6: var comparison
in thread var comparison
DB <...> : the code was run under the debugger.
Example of a debugger session:
$ perl -de 42
Loading DB routines from perl5db.pl version 1.32
Editor support available.
Enter h or `h h' for help, or `man perldebug' for more help.
main::(-e:1): 42
DB<1> %hash = qw( a 1 b 2 c 3 d 4 );
DB<2> print %hash
c3a1b2d4
DB<3> print scalar %hash
4/8
DB<4> $hash{e} = undef
DB<5> print scalar %hash
5/8
DB<6> print "true" if defined $hash{e}
DB<7> print "true" if exists $hash{e}
true
DB<8>
