{"id":4524,"date":"2025-01-13T15:13:41","date_gmt":"2025-01-13T06:13:41","guid":{"rendered":"https:\/\/www.wsmeguro.jp\/wp\/?p=4524"},"modified":"2025-01-13T15:15:37","modified_gmt":"2025-01-13T06:15:37","slug":"dart%e3%81%ae%e5%8b%89%e5%bc%b78%e2%88%922%ef%bc%9a%e5%8c%bf%e5%90%8d%e9%96%a2%e6%95%b0%ef%bc%88%e3%83%a9%e3%83%a0%e3%83%80%e5%bc%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsmeguro.jp\/wp\/?p=4524","title":{"rendered":"Dart\u306e\u52c9\u5f378\u22122\uff1a\u533f\u540d\u95a2\u6570\uff08\u30e9\u30e0\u30c0\u5f0f\uff09"},"content":{"rendered":"

\u914d\u5217\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u305f\u51e6\u7406\u7b49\u306f\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3046\u3068\u3059\u3063\u304d\u308a\u3068\u3057\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\uff11\u884c\u3067\u8868\u305b\u308b\u51e6\u7406\u3092\u95a2\u6570\u3092\u5ba3\u8a00\u3057\u306a\u3044\u3067\u5b8c\u4e86\u3055\u305b\u308b\u3082\u306e\u306a\u306e\u3067\u3001\u884c\u6570\u524a\u6e1b\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u306f\u53ef\u8aad\u6027\u304c\u843d\u3061\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

    \n
  1. sort\n
    \n
    \r\n\/\/\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u308f\u306a\u3044\u4f8b\r\nint alphabeticalOrder(String a, String b) {\r\n  return a.compareTo(b);\r\n}\r\nvoid main() {\r\n  var names = ['Charlie', 'Alice', 'Bob'];\r\n  names.sort(alphabeticalOrder);\r\n  print(names); \/\/ ['Alice', 'Bob', 'Charlie']\r\n}\r\n\r\n\/\/\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3046\u4f8b\r\nvoid main() {\r\n  var names = ['Charlie', 'Alice', 'Bob'];\r\n  names.sort((a,b) => a.compareTo(b)); \/\/\u9023\u7d9a\u3059\u308b\uff12\u3064\u306e\u8981\u7d20\u3092\u53d6\u308a\u51fa\u3057\u3066\u5927\u5c0f\u6bd4\u8f03\u3057\u3066\u4e26\u3073\u66ff\u3048\r\n  print(names); \/\/ ['Alice', 'Bob', 'Charlie']\r\n}\r\n<\/pre>\n<\/div>\n<\/li>\n
  2. map\n
    \n
    \r\nvoid main() {\r\n  var numbers = [1, 2, 3, 4, 5];\r\n  \/\/ \u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3063\u3066\u30ea\u30b9\u30c8\u306e\u5404\u8981\u7d20\u30922\u500d\u306b\u3059\u308b\r\n  var doubled = numbers.map((num) => num * 2).toList();\r\n  print(doubled); \/\/ [2, 4, 6, 8, 10]\r\n}\r\n<\/pre>\n<\/div>\n<\/li>\n
  3. where\uff08\u6761\u4ef6\u306b\u3088\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\uff09\n
    \n
    \r\nvoid main() {\r\n  var numbers = [1, 2, 3, 4, 5, 6];\r\n  \/\/ \u5076\u6570\u3060\u3051\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\r\n  var evenNumbers = numbers.where((num) => num % 2 == 0).toList();\r\n  print(evenNumbers); \/\/ [2, 4, 6]\r\n}\r\n<\/pre>\n<\/div>\n<\/li>\n
  4. \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u3057\u3066\u306e\u30e9\u30e0\u30c0\u5f0f\n
    \n
    \r\nvoid main() {\r\n  \/\/ \u30ea\u30b9\u30c8\u306e\u5404\u8981\u7d20\u3092\u30d7\u30ea\u30f3\u30c8\u3059\u308b\r\n  var numbers = [1, 2, 3, 4, 5];\r\n  numbers.forEach((num) => print('Number: $num'));\r\n}\r\n\/\/ Number: 1\r\n\/\/ Number: 2\r\n\/\/ Number: 3\r\n\/\/ Number: 4\r\n\/\/ Number: 5\r\n<\/pre>\n<\/div>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
    \u914d\u5217\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u305f\u51e6\u7406\u7b49\u306f\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3046\u3068\u3059\u3063\u304d\u308a\u3068\u3057\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\uff11\u884c\u3067\u8868\u305b\u308b\u51e6\u7406\u3092\u95a2\u6570\u3092\u5ba3\u8a00\u3057\u306a\u3044\u3067\u5b8c\u4e86\u3055\u305b\u308b\u3082\u306e\u306a\u306e\u3067\u3001\u884c\u6570\u524a\u6e1b\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u306f\u53ef\u8aad\u6027\u304c\u843d\u3061\u308b\u3068\u601d\u3044\u307e\u3059\u3002 sort \/\/\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[595,505],"tags":[601,597,618,619],"class_list":["post-4524","post","type-post","status-publish","format-standard","hentry","category-dart2","category-programming","tag-dart","tag-dart2","tag-dartpad"],"_links":{"self":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4524"}],"version-history":[{"count":2,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4524\/revisions"}],"predecessor-version":[{"id":4540,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=\/wp\/v2\/posts\/4524\/revisions\/4540"}],"wp:attachment":[{"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsmeguro.jp\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}