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Categories / C# / Collections Data Structure

 

Two Key Dictionary

//http://isotopescreencapture.codeplex.com/ //The MIT License (MIT) using System.Collections.Generic; namespace Isotope.Collections {     public class TwoKeyDictionary<PK, SK, V>     {         Dictionary<PK, Dictionary<SK, V>> dic_pk;         public TwoKeyDictionary()         {             this.dic_pk = new Dictionary<PK, Dictionary<SK, V>>();         }         public bool ContainsPrimaryKey(PK pk)         {             return this.dic_pk.ContainsKey(pk);         }         public bool ContainsKey(PK pk, SK sk)         {             V v;             bool haskey = this.TryGetValue(pk, sk, out v);             return haskey;         }         public bool TryGetValue(PK pk, SK sk, out V v)         {             Dictionary<SK, V> sk_dic;             bool has_pk = this.dic_pk.TryGetValue(pk, out sk_dic);             if (!has_pk)             {                 v = default(V);                 return false;             }             return sk_dic.TryGetValue(sk, out v);         }         public V GetValue(PK pk, SK sk)         {             V v;             bool haskey = this.TryGetValue(pk, sk, out v);             if (!haskey)             {                 string msg = string.Format("(pk,sk) missing");                 throw new KeyNotFoundException(msg);             }             return v;         }         public void SetValue(PK pk, SK sk, V v)         {             Dictionary<SK, V> sk_dic;             bool has_pk = this.dic_pk.TryGetValue(pk, out sk_dic);             if (!has_pk)             {                 sk_dic = new Dictionary<SK, V>();                 this.dic_pk[pk] = sk_dic;             }             sk_dic[sk] = v;         }         public V this[PK pk, SK sk]         {             get             {                 return this.GetValue(pk, sk);             }             set             {                 this.SetValue(pk, sk, value);             }         }         public int Count         {             get             {                 int n = 0;                 foreach (var i in this.dic_pk.Values)                 {                     n += i.Count;                 }                 return n;             }         }     } }