一匿名字典集合初始 [英] Anonymous collection initializer for a dictionary

问题描述

是否有可能隐含申报下一词典＆LT;超链接，匿名＆GT; ：

Is it possible to implicitly declare next Dictionary<HyperLink, Anonymous>:

{ urlA, new { Text = "TextA", Url = "UrlA" } },
{ urlB, new { Text = "TextB", Url = "UrlB" } }

所以我可以用这种方式：

so I could use it this way:

foreach (var k in dic)
{
   k.Key.Text = k.Value.Text;
   k.Key.NavigateUrl = k.Value.Url;
}

推荐答案

怎么样：

var dict = new[] {
            new { Text = "TextA", Url = "UrlA" },
            new { Text = "TextB", Url = "UrlB" }
        }.ToDictionary(x => x.Url);
// or to add separately:
dict.Add("UrlC", new { Text = "TextC", Url = "UrlC" });

不过，你可以只的foreach 列表/阵列上...

However, you could just foreach on a list/array...

var arr = new[] {
    new { Text = "TextA", Url = "UrlA" },
    new { Text = "TextB", Url = "UrlB" }
};
foreach (var item in arr) {
    Console.WriteLine("{0}: {1}", item.Text, item.Url);
}

您只有在你通过（唯一的）关键需要O（1）查找需要一本字典。

You only need a dictionary if you need O(1) lookup via the (unique) key.

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