Perl 中输出 hash 的全部內容

1. while(my ($key, $val) = each(%hash)) { print "$key $val" }
2. %hash = qw / car 600k bike 70k /; print $_ , $hash{$_} , "/n" foreach (keys %hash);
3. print "$_ $hash{$_}/n" foreach (keys %hash);
4. print "$_ $h{$_}/n" for keys %h;

Perl 中输出 Array 的內容:

1. print $_."/n" for @a;
2. print @a;
3. push @a, split for <>; print @a;