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Optimize IndexOf lookups #19963

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Merged
mattleibow merged 2 commits into from
Jan 19, 2024
Merged

Optimize IndexOf lookups #19963

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80ce02b
optimize index lookups
Jan 18, 2024
0109d42
add benchmarks
Jan 18, 2024
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6 changes: 6 additions & 0 deletions src/Core/src/Extensions/EnumerableExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,12 @@ public static int IndexOf<T>(this IEnumerable<T> enumerable, T item)
if (enumerable == null)
throw new ArgumentNullException(nameof(enumerable));

if (enumerable is IList<T> list)
return list.IndexOf(item);

if (enumerable is T[] array)
return Array.IndexOf(array, item);

var i = 0;
foreach (T element in enumerable)
{
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