net9.0
namespace System.Linq
{
    public static class Enumerable
    {
        public static TSource FirstOrDefault<TSource>(this IEnumerable<TSource>! source, Func<TSource, bool>! predicate, TSource defaultValue);
    }
}
nuget.org
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Reference this API
Design Reviews
.NET 6.07.08.09.0
Information specific to net9.0
Assembly

System.Linq , Version=9.0.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

The API is automatically referenced.

Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API

11/24/2024
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