数组套散列和散列套散列报错，请指教

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@b = (["1" => "a", "2" => "b"], ["a" => "A", "b" => "B"]);
print $b[0]{"2"},"\n";              <-- 报错

%d = ("m" => ["1" => 10, "2" => 20], "n" => ["1" => 100, "2" => 200]);
print $d{"m"}{"2"},"\n";                <-- 报错

为什么是错误的？要如何改？谢谢！

珞水的大叔

[]是数组的引用
例如:["1" => "a", "2" => "b"]等价于[("1","a","2","b")]
{}才是哈希的引用
改为:

1. @b = ({"1" => "a", "2" => "b"}, {"a" => "A", "b" => "B"});
   
2. %d = ("m" => {"1" => 10, "2" => 20}, "n" => {"1" => 100, "2" => 200});

复制代码

有行动才会有收获

[]是数组的引用
例如:["1" => "a", "2" => "b"]等价于[("1","a","2","b")]
{}才是哈希的引用
改为:
珞水的大叔 发表于 2010-09-27 15:49

好像不对啊，还是报错

wfnh

=>···起神奇逗号作用···

有行动才会有收获

=>···起神奇逗号作用···
wfnh 发表于 2010-09-27 15:56

就是说这种写法不正确喽

那应该怎么写呢？

珞水的大叔

回复 3# 有行动才会有收获


    我在2楼里面写了啊
  仔细看看

  改为:

1. @b = ({"1" => "a", "2" => "b"}, {"a" => "A", "b" => "B"});
   
2. %d = ("m" => {"1" => 10, "2" => 20}, "n" => {"1" => 100, "2" => 200});

复制代码

珞水的大叔

好像不对啊，还是报错
有行动才会有收获 发表于 2010-09-27 15:52

    我写的这个
    例如:["1" => "a", "2" => "b"]等价于[("1","a","2","b")]
    就是你原来错误写法的等价状况,它当然是错的啊……

wfnh

回复 5# 有行动才会有收获


    如果··你要你的print语句不变的话···可以这样定义数组：
@b = ({'1' => "a"}, {"2" => "b"}, {"a" => "A"},{"b" => "B"});

or

@b = ({'1' => "a", "2" => "b"}, {"a" => "A","b" => "B"});

有行动才会有收获

回复  有行动才会有收获


    我在2楼里面写了啊
  仔细看看

  改为:
珞水的大叔 发表于 2010-09-27 16:07

我直接复制你的代码，执行正确

看来是我之前改错了

谢谢！

shaneqi

1. my @b = ({"1" => "a", "2" => "b"}, {"a" => "A", "b" => "B"});
   
2. my %d = ("m" => {"1" => 10, "2" => 20}, "n" => {"1" => 100, "2" => 200});
   
3. 
   
4. print $b[0]{"1"},"\n";
   
5. print $d{"m"}{"1"},"\n";

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