Small speedup by using AllocateUninitializedArray

DanHarltey · Mar 25, 2024 · d625a3a · d625a3a
1 parent 9864419
commit d625a3a
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Showing 2 changed files with 15 additions and 4 deletions.
diff --git a/src/Fastenshtein/Levenshtein.cs b/src/Fastenshtein/Levenshtein.cs
@@ -1,4 +1,6 @@
-namespace Fastenshtein
+using System;
+
+namespace Fastenshtein
 {
     /// <summary>
     /// Measures the difference between two strings.
@@ -21,7 +23,12 @@ public Levenshtein(string value)
         {
             this.storedValue = value;
             // Create matrix row
+#if NET5_0
+            this.costs = GC.AllocateUninitializedArray<int>(this.storedValue.Length);
+#else
             this.costs = new int[this.storedValue.Length];
+#endif
+
         }
 
         /// <summary>

diff --git a/src/Fastenshtein/StaticLevenshtein.cs b/src/Fastenshtein/StaticLevenshtein.cs
@@ -1,4 +1,6 @@
-namespace Fastenshtein
+using System;
+
+namespace Fastenshtein
 {
     /// <summary>
     /// Measures the difference between two strings.
@@ -17,9 +19,11 @@ public static int Distance(string value1, string value2)
             {
                 return value1.Length;
             }
-
+#if net5_0
+            int[] costs = GC.AllocateUninitializedArray<int>(value2.Length);
+#else
             int[] costs = new int[value2.Length];
-
+#endif
             // Add indexing for insertion to first row
             for (int i = 0; i < costs.Length;)
             {