添加项目文件。

common/Tnb.Common/Extension/DictionaryExtensions.cs

@@ -0,0 +1,58 @@
+using JNPF.DependencyInjection;
+
+namespace JNPF.Common.Extension;
+
+/// <summary>
+/// 字典辅助扩展方法.
+/// </summary>
+[SuppressSniffer]
+public static class DictionaryExtensions
+{
+    /// <summary>
+    /// 从字典中获取值，不存在则返回字典<typeparamref name="TValue"/>类型的默认值.
+    /// </summary>
+    /// <typeparam name="TKey">字典键类型.</typeparam>
+    /// <typeparam name="TValue">字典值类型.</typeparam>
+    /// <param name="dictionary">要操作的字典.</param>
+    /// <param name="key">指定键名.</param>
+    /// <returns>获取到的值.</returns>
+    public static TValue GetOrDefault<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key)
+    {
+        return dictionary.TryGetValue(key, out TValue value) ? value : default(TValue);
+    }
+
+    /// <summary>
+    /// 获取指定键的值，不存在则按指定委托添加值.
+    /// </summary>
+    /// <typeparam name="TKey">字典键类型.</typeparam>
+    /// <typeparam name="TValue">字典值类型.</typeparam>
+    /// <param name="dictionary">要操作的字典.</param>
+    /// <param name="key">指定键名.</param>
+    /// <param name="addFunc">添加值的委托.</param>
+    /// <returns>获取到的值.</returns>
+    public static TValue GetOrAdd<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, Func<TValue> addFunc)
+    {
+        if (dictionary.TryGetValue(key, out TValue value))
+        {
+            return value;
+        }
+
+        return dictionary[key] = addFunc();
+    }
+
+    /// <summary>
+    /// 替换值.
+    /// </summary>
+    /// <param name="dictionary1"></param>
+    /// <param name="dictionary2"></param>
+    public static void ReplaceValue(this Dictionary<string, object> dictionary1, Dictionary<string, object> dictionary2)
+    {
+        foreach (var item in dictionary2.Keys)
+        {
+            if (dictionary1.ContainsKey(item))
+            {
+                dictionary1[item] = dictionary2[item];
+            }
+        }
+    }
+}