SelectNotNull

SelectNotNull.cs

public static class Ext
{
	public static IEnumerable<TR> SelectNotNull<T, TR>(this IEnumerable<T> source, Func<T, TR?> fn) where TR : struct
	{
		return source.Select(fn).Where(it => it != null).Cast<TR>();
	}

	public static IEnumerable<TR> SelectNotNull<T, TR>(this IEnumerable<T> source, Func<T, TR?> fn) where TR : class
	{
		return source.Select(fn).Where(it => it != null).Cast<TR>();
	}
	
	public static IEnumerable<TR> SelectNotNullNope<T, TR>(this IEnumerable<T> source, Func<T, TR?> fn)
	{
		return source.Select(fn).Where(it => it != null).Cast<TR>();
	}
}