24 lines
976 B
C#
24 lines
976 B
C#
using System.Collections.Generic;
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namespace Plane.Collections
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{
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public static class DictionaryExtensions
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{
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/// <summary>
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/// 尝试返回字典中与指定的键对应的值，若此键不存在则返回指定的默认值。
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/// </summary>
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/// <typeparam name="TKey">键的类型。</typeparam>
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/// <typeparam name="TValue">值的类型。</typeparam>
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/// <param name="dictionary">源字典。</param>
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/// <param name="key">键。</param>
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/// <param name="defaultValue">默认值。</param>
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/// <returns>若字典中包含指定的键，返回其对应的值；否则返回指定的默认值。</returns>
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public static TValue GetValue<TKey, TValue>(this Dictionary<TKey, TValue> dictionary, TKey key, TValue defaultValue = default(TValue))
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{
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var value = defaultValue;
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dictionary.TryGetValue(key, out value);
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return value;
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}
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}
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}
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