perl 用foreach 求解遍历HASH
刚自学perl一个小时


求高手指点 一个HASH如下 "小明"=>(语文=>50 数学=>60)
"小刚"=>(语文=>80 数学=>90)
将HASH 遍历出来




[解决办法]

Perl code

%hash = ("小明"=>{'语文'=>50, '数学'=>60},        "小刚"=>{'语文'=>80, '数学'=>90});while (($k, $v) = each %hash) {    print "$k =>\n";    while (($x, $y) = each %$v) {        print "\t$x => $y\n";    }}
[解决办法]
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Perl code
my %hash;%hash = ("小明"=>{'语文'=>50, '数学'=>60},        "小刚"=>{'语文'=>80, '数学'=>90});foreach my $key ( keys %hash ){    print "$key:\n";    my $subhash = $hash{$key};    foreach my $subkey ( keys %$subhash )    {        print "\t$subkey => $$subhash{$subkey}\n";    }}