using System; using System.Collections.Generic; namespace fastJSON { internal class SafeDictionary<TKey, TValue> { private readonly object _Padlock = new object(); private readonly Dictionary<TKey, TValue> _Dictionary = new Dictionary<TKey, TValue>(); public bool TryGetValue(TKey key, out TValue value) { return _Dictionary.TryGetValue(key, out value); } public TValue this[TKey key] { get { return _Dictionary[key]; } } public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator() { return ((ICollection<KeyValuePair<TKey, TValue>>)_Dictionary).GetEnumerator(); } public void Add(TKey key, TValue value) { lock (_Padlock) { if (_Dictionary.ContainsKey(key) == false) _Dictionary.Add(key, value); } } } }
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Math Primers for Programmers
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