Delete BiDictionary.cs

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cxxpxr 2021-04-03 22:48:23 -04:00 committed by GitHub
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//
// Source: https://stackoverflow.com/questions/255341/getting-multiple-keys-of-specified-value-of-a-generic-dictionary#255630
//
using System;
using System.Collections.Generic;
namespace LightReflectiveMirror
{
class BiDictionary<TFirst, TSecond>
{
IDictionary<TFirst, TSecond> firstToSecond = new Dictionary<TFirst, TSecond>();
IDictionary<TSecond, TFirst> secondToFirst = new Dictionary<TSecond, TFirst>();
public void Add(TFirst first, TSecond second)
{
if (firstToSecond.ContainsKey(first) ||
secondToFirst.ContainsKey(second))
{
throw new ArgumentException("Duplicate first or second");
}
firstToSecond.Add(first, second);
secondToFirst.Add(second, first);
}
public bool TryGetByFirst(TFirst first, out TSecond second)
{
return firstToSecond.TryGetValue(first, out second);
}
public void Remove(TFirst first)
{
secondToFirst.Remove(firstToSecond[first]);
firstToSecond.Remove(first);
}
public bool TryGetBySecond(TSecond second, out TFirst first)
{
return secondToFirst.TryGetValue(second, out first);
}
public TSecond GetByFirst(TFirst first)
{
return firstToSecond[first];
}
public TFirst GetBySecond(TSecond second)
{
return secondToFirst[second];
}
}
}