add dict content helper method to replace values based on a lambda (#173)

2 files changed, 13 insertions, 0 deletions

diff --git a/src/StardewModdingAPI/Framework/Content/ContentEventHelperForDictionary.cs b/src/StardewModdingAPI/Framework/Content/ContentEventHelperForDictionary.cs
index 8fcaae3c..9bfc16d8 100644
--- a/src/StardewModdingAPI/Framework/Content/ContentEventHelperForDictionary.cs
+++ b/src/StardewModdingAPI/Framework/Content/ContentEventHelperForDictionary.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace StardewModdingAPI.Framework.Content
 {
@@ -32,5 +33,13 @@ namespace StardewModdingAPI.Framework.Content
         {
             this.Data[key] = value(this.Data[key]);
         }
+
+        /// <summary>Dynamically replace values in the dictionary.</summary>
+        /// <param name="replacer">A lambda which takes the current key and value for an entry, and returns the new value.</param>
+        public void Replace(Func<TKey, TValue, TValue> replacer)
+        {
+            foreach (var pair in this.Data.ToArray())
+                this.Data[pair.Key] = replacer(pair.Key, pair.Value);
+        }
     }
 }
diff --git a/src/StardewModdingAPI/IContentEventHelperForDictionary.cs b/src/StardewModdingAPI/IContentEventHelperForDictionary.cs
index 1f259920..34796d5c 100644
--- a/src/StardewModdingAPI/IContentEventHelperForDictionary.cs
+++ b/src/StardewModdingAPI/IContentEventHelperForDictionary.cs
@@ -36,6 +36,10 @@ namespace StardewModdingAPI
         /// <param name="value">A callback which accepts the current value and returns the new value.</param>
         void SetEntry(TKey key, Func<TValue, TValue> value);
 
+        /// <summary>Dynamically replace values in the dictionary.</summary>
+        /// <param name="replacer">A lambda which takes the current key and value for an entry, and returns the new value.</param>
+        void Replace(Func<TKey, TValue, TValue> replacer);
+
         /// <summary>Replace the entire content value with the given value. This is generally not recommended, since it may break compatibility with other mods or different versions of the game.</summary>
         /// <param name="value">The new content value.</param>
         /// <exception cref="ArgumentNullException">The <paramref name="value"/> is null.</exception>