{"id":2443,"date":"2016-07-14T11:07:05","date_gmt":"2016-07-14T02:07:05","guid":{"rendered":"http:\/\/www.whoocus.com\/blog\/?p=2443"},"modified":"2016-07-14T11:07:05","modified_gmt":"2016-07-14T02:07:05","slug":"elixir-%e3%82%a8%e3%83%a9%e3%83%bc%e3%83%8f%e3%83%b3%e3%83%89%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%ae%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3","status":"publish","type":"post","link":"https:\/\/www.blowfish.co.jp\/?p=2443","title":{"rendered":"Elixir \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u30d1\u30bf\u30fc\u30f3"},"content":{"rendered":"

\u5b58\u5728\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3060\u6642\u3001:ok \u306f\u5e30\u3063\u3066\u3053\u306a\u3044\u70ba\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u306b\u5931\u6557\u3057\u3066\u30a8\u30e9\u30fc\u3068\u306a\u308b\u3002<\/p>\n

[bash]
\niex(1)> {:ok, file} = File.read "non_exist_file.txt"
\n** (MatchError) no match of right hand side value: {:error, :enoent}
\n[\/bash]<\/p>\n

\u5b58\u5728\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3060\u6642\u3001:error \u304c\u5e30\u3063\u3066\u304f\u308b\u70ba\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u306b\u5931\u6557\u3057\u306a\u3044\u3002<\/p>\n

[bash]
\niex(2)> {:error, enoent} = File.read "non_exist_file.txt"
\n{:error, :enoent}
\n[\/bash]<\/p>\n

\u666e\u901a\u306e\u8a00\u8a9e\u306a\u3089\u3001\u4e0b\u8a18\u306e2\u3064\u306e\u6587\u3092if\u6587\u3067\u5236\u5fa1\u3059\u308b\u3068\u3053\u308d\u3060\u304c\u3001\u4e0a\u8a18\u306e\u5236\u5fa1\u3092\u632f\u308a\u5206\u3051\u308b\u305f\u3081\u306b\u306f\u3001case\u6587\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u3060\u3002<\/p>\n

[bash]
\ncase File.read "non_exist_file.txt" do
\n {:ok, file} -> IO.puts "OK!!"
\n {:error, enoent} -> IO.puts "File not found Error!!"
\nend
\n[\/bash]<\/p>\n

\u4e2d\u3005\u3001\u6163\u308c\u306a\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5b58\u5728\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3060\u6642\u3001:ok \u306f\u5e30\u3063\u3066\u3053\u306a\u3044\u70ba\u3001\u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u306b\u5931\u6557\u3057\u3066\u30a8\u30e9\u30fc\u3068\u306a\u308b\u3002 [bash] iex(1)> {:ok, file} = File.read "non_exist_fi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"footnotes":""},"categories":[53,4],"tags":[],"class_list":["post-2443","post","type-post","status-publish","format-standard","hentry","category-elixir","category-tech"],"_links":{"self":[{"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2443"}],"version-history":[{"count":1,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2443\/revisions"}],"predecessor-version":[{"id":2444,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/2443\/revisions\/2444"}],"wp:attachment":[{"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.blowfish.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}