public static async Task <List <T> > ToListAsync <T>(this IEnumerableAsync <T> enumerable, CancellationToken cancellationToken = default(CancellationToken))
{
using (var enumerator = await enumerable.GetEnumeratorAsync(cancellationToken).ConfigureAwait(false))
{
return(await enumerator.ToListAsync(cancellationToken).ConfigureAwait(false));
}
}
public static async Task ForEachAsync <T>(this IEnumerableAsync <T> list, Func <T, Task> func)
{
var enumerator = await list.GetEnumeratorAsync();
while (await enumerator.MoveNextAsync())
{
await func(enumerator.Current);
}
}
private IEnumerable <IPackageSearchMetadata> ConvertToEnumerable(IEnumerableAsync <IPackageSearchMetadata> packagesAsync)
{
var enumeratorAsync = packagesAsync.GetEnumeratorAsync();
var packages = new List <IPackageSearchMetadata>();
if (enumeratorAsync == null)
{
return(Enumerable.Empty <IPackageSearchMetadata>());
}
while (enumeratorAsync.MoveNextAsync().ConfigureAwait(false).GetAwaiter().GetResult())
{
packages.Add(enumeratorAsync.Current);
}
return(packages);
}
public static async Task <T> SingleAsync <T>(this IEnumerableAsync <T> enumerable, CancellationToken cancellationToken = default(CancellationToken))
{
using (var enumerator = await enumerable.GetEnumeratorAsync(cancellationToken).ConfigureAwait(false))
{
if (await enumerator.MoveNextAsync(cancellationToken).ConfigureAwait(false))
{
var value = enumerator.Current;
if (await enumerator.MoveNextAsync(cancellationToken).ConfigureAwait(false))
{
throw MoreThanOneElement();
}
return(value);
}
else
{
throw EmptySequence();
}
}
}
