static TResult[] ToArray <TSource, TResult>(this TSource[] source, Predicate <TSource> predicate, NullableSelector <TSource, TResult> selector, int skipCount, int takeCount)
{
var builder = new LargeArrayBuilder <TResult>(initialize: true);
builder.AddRange <TSource>(source, predicate, selector, skipCount, takeCount);
return(builder.ToArray());
}
static TSource[] ToArray <TSource>(this TSource[] source, PredicateAt <TSource> predicate, int skipCount, int takeCount)
{
var builder = new LargeArrayBuilder <TSource>(initialize: true);
builder.AddRange <TSource[]>(source, predicate, skipCount, takeCount);
return(builder.ToArray());
}
static TResult[] ToArray <TSource, TResult>(this ReadOnlySpan <TSource> source, Predicate <TSource> predicate, Selector <TSource, TResult> selector)
{
var builder = new LargeArrayBuilder <TResult>(initialize: true);
builder.AddRange <TSource>(source, predicate, selector);
return(builder.ToArray());
}
static TSource[] ToArray <TSource>(this ReadOnlySpan <TSource> source, PredicateAt <TSource> predicate)
{
var builder = new LargeArrayBuilder <TSource>(initialize: true);
builder.AddRange(source, predicate);
return(builder.ToArray());
}
static TSource[] ToArray <TList, TSource>(this TList source, PredicateAt <TSource> predicate, int skipCount, int takeCount)
where TList : IReadOnlyList <TSource>
{
var builder = new LargeArrayBuilder <TSource>(initialize: true);
builder.AddRange <TList>(source, predicate, skipCount, takeCount);
return(builder.ToArray());
}
static TResult[] ToArray <TList, TSource, TResult>(this TList source, Predicate <TSource> predicate, Selector <TSource, TResult> selector, int skipCount, int takeCount)
where TList : notnull, IReadOnlyList <TSource>
{
var builder = new LargeArrayBuilder <TResult>(initialize: true);
builder.AddRange <TList, TSource>(source, predicate, selector, skipCount, takeCount);
return(builder.ToArray());
}
static TResult[] ToArray <TEnumerable, TEnumerator, TSource, TResult>(this TEnumerable source, Predicate <TSource> predicate, NullableSelector <TSource, TResult> selector)
where TEnumerable : IValueEnumerable <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
var builder = new LargeArrayBuilder <TResult>(initialize: true);
builder.AddRange <TEnumerable, TEnumerator, TSource>(source, predicate, selector);
return(builder.ToArray());
}
static TSource[] ToArray <TEnumerable, TEnumerator, TSource>(this TEnumerable source, PredicateAt <TSource> predicate)
where TEnumerable : IValueEnumerable <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
var builder = new LargeArrayBuilder <TSource>(initialize: true);
builder.AddRange <TEnumerable, TEnumerator>(source, predicate);
return(builder.ToArray());
}
static T[] ToArray <T>(IEnumerable <T> source)
{
switch (source)
{
case ICollection <T> collection:
var count = collection.Count;
if (count == 0)
{
return(System.Array.Empty <T>());
}
var buffer = new T[count];
collection.CopyTo(buffer, 0);
return(buffer);
default:
var builder = new LargeArrayBuilder <T>(initialize: true);
builder.AddRange(source);
return(builder.ToArray());
}
}
public static TSource[] ToArray <TEnumerable, TEnumerator, TSource>(this TEnumerable source)
where TEnumerable : IValueEnumerable <TSource, TEnumerator>
where TEnumerator : struct, IEnumerator <TSource>
{
switch (source)
{
case ICollection <TSource> collection:
var count = collection.Count;
if (count == 0)
{
return(Array.Empty <TSource>());
}
var buffer = new TSource[count];
collection.CopyTo(buffer, 0);
return(buffer);
default:
var builder = new LargeArrayBuilder <TSource>(initialize: true);
builder.AddRange <TEnumerable, TEnumerator>(source);
return(builder.ToArray());
}
}