{"blog_title":"Architect's Log","published":"2012-03-22 19:20:58","provider_url":"https://hatena.blog","blog_url":"https://blog.jhashimoto.net/","version":"1.0","provider_name":"Hatena Blog","width":"100%","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.jhashimoto.net%2Fentry%2F20120322%2F1332411658\" title=\"IEnumerable.DefaultIfEmpty\u30e1\u30bd\u30c3\u30c9 - Architect&#39;s Log\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://blog.jhashimoto.net/entry/20120322/1332411658","image_url":"http://capture.heartrails.com/150x130/shadow?http://msdn.microsoft.com/ja-jp/library/bb355419.aspx","author_url":"https://blog.hatena.ne.jp/JHashimoto/","categories":[".NET","LINQ"],"author_name":"JHashimoto","height":"190","description":"Enumerable.DefaultIfEmpty(TSource) \u30e1\u30bd\u30c3\u30c9 (IEnumerable(TSource), TSource) (System.Linq)\u6307\u5b9a\u3055\u308c\u305f\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002\u30b7\u30fc\u30b1\u30f3\u30b9\u304c\u7a7a\u306e\u5834\u5408\u306f\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3 \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306b\u3042\u308b\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u65e2\u5b9a\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002 \u30bd\u30fc\u30b9\u30b3\u30fc\u30c9 using System; using System.Linq; namespace LinqSample { class Program { static void Main(string[] args) { int[] numbers = new int[] { 1, 2, 3, 4\u2026","title":"IEnumerable.DefaultIfEmpty\u30e1\u30bd\u30c3\u30c9"}