/// <summary>
/// The first element of a sequence that satisfies a predicate.
/// </summary>
public static TOut Last <TOut, TProducer>(
this SpanEnumerable <TOut, TProducer> spanEnum,
Predicate <TOut> predicate)
where TProducer : struct, IProducer <TOut>
=>
spanEnum.Where(predicate).Last();
/// <summary>
/// Takes values from the sequence to fill the
/// provided array, throws if the array is not large enough to
/// contain all elements from the sequence.
/// </summary>
/// <returns>
/// Returns the span, maybe resized if
/// there were not enough values in the enumerable.
/// </returns>
public static Span <TOut> CopyInto <TOut>(
this SpanEnumerable <TOut> spanEnum,
TOut[] output)
=>
spanEnum.CopyInto(output.AsSpan());
/// <summary>
/// Takes enough values from the sequence to fill the provided span.
/// </summary>
/// <remarks>
/// A copy of the enumerable is taken, which means that (beyond any
/// side-effects of consuming values from it) the original
/// enumerable is unchanged.
/// </remarks>
/// <returns>
/// Returns the span, maybe resized if there were not enough values
/// in the enumerable.
/// </returns>
public static Span <TOut> TakeInto <TOut>(
this SpanEnumerable <TOut> self,
Span <TOut> output)
=>
self.ConsumeInto(output);
/// <summary> Copy a sequence into a span, in reverse. </summary>
public static Span<TOut> ReverseInto<TIn, TOut, TProducer>(
this SpanEnumerable<TIn, TOut, TProducer> spanEnum,
Span<TOut> output)
where TProducer : struct, IProducer<TIn, TOut>
=>
spanEnum.CopyInto(output).ReverseInPlace();
/// <summary>
/// Takes values from the sequence to fill the
/// provided array, throws if the array is not large enough to
/// contain all elements from the sequence.
/// </summary>
/// <returns>
/// Returns the span, maybe resized if
/// there were not enough values in the enumerable.
/// </returns>
public static Span <TOut> CopyInto <TOut, TProducer>(
this SpanEnumerable <TOut, TProducer> spanEnum,
TOut[] output)
where TProducer : IProducer <TOut>
=>
spanEnum.CopyInto(output.AsSpan());
/// <summary>
/// The last element of a sequence that satisfies a predicate.
/// </summary>
public static TOut LastOrDefault <TOut>(
this SpanEnumerable <TOut> spanEnum,
Predicate <TOut> predicate)
=>
spanEnum.Where(predicate).LastOrDefault();
/// <summary>
/// The first element of a sequence that satisfies a predicate.
/// </summary>
public static TOut FirstOrDefault <TOut, TProducer>(
this SpanEnumerable <TOut, TProducer> spanEnum,
Predicate <TOut> predicate)
where TProducer : struct, IProducer <TOut>
=>
spanEnum.Where(predicate).FirstOrDefault();
public Enumerator(SpanEnumerable <TOut> e)
{
_enum = e;
Current = default;
}
/// <summary>
/// The single element of a sequence that satisfies a predicate.
/// </summary>
public static TOut Single <TIn, TOut, TProducer>(
this SpanEnumerable <TIn, TOut, TProducer> spanEnum,
Predicate <TOut> predicate)
where TProducer : struct, IProducer <TIn, TOut>
=>
spanEnum.Where(predicate).Single();
/// <summary>
/// The first element of a sequence that satisfies a predicate.
/// </summary>
public static TOut First <TOut>(
this SpanEnumerable <TOut> spanEnum,
Predicate <TOut> predicate)
=>
spanEnum.Where(predicate).First();
/// <summary> Copy a sequence into a span, in reverse. </summary>
public static Span <TOut> ReverseInto <TOut>(
this SpanEnumerable <TOut> spanEnum,
Span <TOut> output)
=>
spanEnum.CopyInto(output).ReverseInPlace();
/// <summary>
/// The sum of a sequence, with a delegate returning an integer
/// for each element of the sequence.
/// </summary>
public static int Sum <TIn, TOut, TProducer>(
this SpanEnumerable <TIn, TOut, TProducer> spanEnum,
Func <TOut, int> getValue)
where TProducer : struct, IProducer <TIn, TOut>
=>
spanEnum.Select(getValue).Sum();
/// <summary>
/// The sum of a sequence, with a delegate returning an integer
/// for each element of the sequence.
/// </summary>
public static int Sum <TOut>(
this SpanEnumerable <TOut> spanEnum,
Func <TOut, int> getValue)
=>
spanEnum.Select(getValue).Sum();
/// <summary>
/// The single element of a sequence that satisfies a predicate.
/// </summary>
public static TOut Single <TOut>(
this SpanEnumerable <TOut> spanEnum,
Predicate <TOut> predicate)
=>
spanEnum.Where(predicate).Single();