C# 如何在c语言中从嵌套字典中获取数据#
我需要从C#中的嵌套字典中获取数据。我的字典是这样的:C# 如何在c语言中从嵌套字典中获取数据#,c#,dictionary,C#,Dictionary,我需要从C#中的嵌套字典中获取数据。我的字典是这样的: static Dictionary<string, Dictionary<ulong, string>> allOffset = new Dictionary<string, Dictionary<ulong, string>>(); 提前感谢。试试: string s = dict["key"][_float_]; 要获取完整列表,可以使用嵌套的foreach循环:
static Dictionary<string, Dictionary<ulong, string>> allOffset =
new Dictionary<string, Dictionary<ulong, string>>();
提前感谢。试试:
string s = dict["key"][_float_];
要获取完整列表,可以使用嵌套的foreach循环:
StringBuilder sb=new StringBuilder();
foreach (var v in dict)
{
sb.Append(v.Key+"=>>");
foreach (var i in v.Value)
{
sb.Append(i.Key + ", " + i.Value);
}
sb.Append(Environment.NewLine);
}
Console.WriteLine(sb);
迭代外部字典,每次迭代嵌套字典的成员,即 (未测试代码)
那么,该方法将枚举所有字典项
public static IEnumerable<KeyValuePair<ulong, string>> GetValues()
{
foreach (var pair in allOffset.Values)
{
foreach (var value in pair)
{
yield return value;
}
}
}
公共静态IEnumerable GetValues()
{
foreach(allOffset.Values中的变量对)
{
foreach(成对的var值)
{
收益回报值;
}
}
}
LINQ答案(读取所有三元组):
或(直接获取字符串):
还是单线解决方案
allOffset.SelectMany(n => n.Value.Select(o => n.Key+"->>"+o.Key+","+ o.Value))
.ToList()
.ForEach(Console.WriteLine);
把我揍一顿。我试着用点表示法,但我不知道如何在不切换到sugar语法的情况下获得“inner”;P+1,回答得很好!
public static IEnumerable<KeyValuePair<ulong, string>> GetValues()
{
foreach (var pair in allOffset.Values)
{
foreach (var value in pair)
{
yield return value;
}
}
}
var qry = from outer in allOffset
from inner in outer.Value
select new {OuterKey = outer.Key,InnerKey = inner.Key,inner.Value};
var qry = from outer in allOffset
from inner in outer.Value
select outer.Key + "->>" + inner.Key + ", " + inner.Value;
foreach(string s in qry) { // show them
Console.WriteLine(s);
}
allOffset.SelectMany(n => n.Value.Select(o => n.Key+"->>"+o.Key+","+ o.Value))
.ToList()
.ForEach(Console.WriteLine);