public static async Task ForEachAsync <T>(this IAsyncFastEnumerable <T> source, Func <T, Task> next)
{
var e = source.GetAsyncEnumerator();
try
{
while (await e.WaitForNextAsync().ConfigureAwait(false))
{
while (true)
{
var item = e.TryGetNext(out var success);
if (!success)
{
break;
}
await next(item).ConfigureAwait(false);
}
}
}
finally
{
await e.DisposeAsync().ConfigureAwait(false);
}
}
public static async Task <R> Aggregate <T, R>(this IAsyncFastEnumerable <T> source, R seed, Func <R, T, Task <R> > aggregate)
{
var res = seed;
var e = source.GetAsyncEnumerator();
try
{
while (await e.WaitForNextAsync().ConfigureAwait(false))
{
while (true)
{
var item = e.TryGetNext(out var success);
if (!success)
{
break;
}
res = await aggregate(res, item).ConfigureAwait(false);
}
}
}
finally
{
await e.DisposeAsync().ConfigureAwait(false);
}
return(res);
}
public WhereFastIteratorWithTask(IAsyncFastEnumerable <T> source, Func <T, Task <bool> > predicate)
{
_source = source;
_predicate = predicate;
}
public WhereFastIterator(IAsyncFastEnumerable <T> source, Func <T, bool> predicate)
{
_source = source;
_predicate = predicate;
}
public SelectFastIteratorWithTask(IAsyncFastEnumerable <T> source, Func <T, Task <R> > selector)
{
_source = source;
_selector = selector;
}
public SelectFastIterator(IAsyncFastEnumerable <T> source, Func <T, R> selector)
{
_source = source;
_selector = selector;
}
public AsyncFastEnumerableToAsyncEnumerable(IAsyncFastEnumerable <T> source)
{
_source = source;
}
public static IAsyncFastEnumerable <T> Where <T>(this IAsyncFastEnumerable <T> source, Func <T, Task <bool> > predicate) => new WhereFastIteratorWithTask <T>(source, predicate);
public static IAsyncEnumerable <T> ToAsyncEnumerable <T>(this IAsyncFastEnumerable <T> source) => new AsyncFastEnumerableToAsyncEnumerable <T>(source);
public static IAsyncFastEnumerable <R> Select <T, R>(this IAsyncFastEnumerable <T> source, Func <T, Task <R> > selector) => new SelectFastIteratorWithTask <T, R>(source, selector);
