net9.0
namespace System.Linq
{
    public static class Enumerable
    {
        public static IEnumerable<KeyValuePair<TKey, int>>! CountBy<TSource, TKey>(this IEnumerable<TSource>! source, Func<TSource, TKey>! keySelector, IEqualityComparer<TKey>? keyComparer = null)
            where TKey, notnull;
    }
}
.NET 9.0
Information specific to net9.0
Assembly

System.Linq , Version=9.0.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

The API is automatically referenced.

Preview The API is contained in a preview framework.
Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API

12/22/2024
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