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Do you know where your variables are?

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Here's a slightly modified version of your AlienFarm module... There are some subtle differences... Can you see what they are?
#!/usr/bin/perl -w package AlienFarm; use strict; sub birth { my $pkg = shift; my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime +(time); my $name = shift; $mon++; $year+=1900; my $birth = "$mon $mday, $year"; my $alien = bless { NAME => "$name", BIRTH => "$birth", POWERS => [ ], BRAINS => ["pre-school", "1st grade", "2nd grade", "3rd grade", "4th grade", "5th grade", "6th grade", "7th grade", "8th grade", "9th grade", "10th grade", "11th grade", "12th grade", "Harvard Freshman", "Harvard Sophmo +re", "Havard Junior", "Harvard Senior", "Employed", "C +EO"], LEVEL => "-1" }, $pkg; } sub birthday { my $decide=shift; ref $decide ? $decide->{BIRTH} : "an unknown time"; } sub name { my $decide=shift; ref $decide ? $decide->{NAME} : "an unknown name"; } sub set_power { my $self=shift; my $power=shift; push @{$self->{POWERS}}, $power; } sub get_powers { my $self=shift; my $num=1; foreach my $power ( @{$self->{POWERS}} ) { print "$num => $power\n"; $num++; } print "\n"; } sub teach_lessons { my $self = shift; $self->{LEVEL}++; return "Lesson taught. Level: ". $self->{BRAINS}[$self->{LEVEL}] . +"\n"; } sub schooling { my $self = shift; return $self->{BRAINS}[$self->{LEVEL}]; }

Also, you can actually combine set_power and get_power into one sub, called power. But that's an exercise left for the reader...

Theodore Charles III
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In reply to Re: Re: Beginner's Object Orientation Exercises? by Necos
in thread Beginner's Object Orientation Exercises? by munchie

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