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September 25, 2003

Data::Dumper

Data::Dumperモジュールはかなり使える.

$ perl -MCPAN -e shell
> install Data::Dumper

たとえば,↓こんな感じのプログラムを実行すると,
--------------------------------------
use Data::Dumper;

my $data = [
  ['a', 'b'],
  'c',
  {d=>'e'},
  {f=>{f=>'g'},h=>{h=>'i'}}
];

print Dumper($data);
--------------------------------------

↓こんなふうに,変数の中身を出力してくれる.
--------------------------------------
$VAR1 = [
  [
   'a',
    'b'
  ],
  'c',
  {
   'd' => 'e'
  },
  {
   'h' => {
    'h' => 'i'
   },
   'f' => {
    'f' => 'g'
   }
  }
 ];
--------------------------------------
複雑なデータ構造を扱うプログラムを書くのが,かなり楽になる.

投稿者 msano : September 25, 2003 10:01 PM

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