public static void ForEach <T>(this IFastEnumerable <T> source, Action <T> next)
{
using (var e = source.GetEnumerator())
{
while (true)
{
var item = e.TryGetNext(out var success);
if (!success)
{
break;
}
next(item);
}
}
}
public long IFastEnumerable()
{
IFastEnumerable <int, int> ife = _array.GetFastEnumerable();
long total = 0;
var enumerator = ife.Start;
bool remaining = true;
loop:
var i = ife.TryGetNext(ref enumerator, out remaining);
if (remaining)
{
total += i;
goto loop;
}
return(total);
}
public static R Aggregate <T, R>(this IFastEnumerable <T> source, R seed, Func <R, T, R> aggregate)
{
var res = seed;
using (var e = source.GetEnumerator())
{
while (true)
{
var item = e.TryGetNext(out var success);
if (!success)
{
break;
}
res = aggregate(res, item);
}
}
return(res);
}
public WhereFastIterator(IFastEnumerable <T> source, Func <T, bool> predicate)
{
_source = source;
_predicate = predicate;
}
public SelectFastIterator(IFastEnumerable <T> source, Func <T, R> selector)
{
_source = source;
_selector = selector;
}
public FastEnumerableToEnumerable(IFastEnumerable <T> source)
{
_source = source;
}
public static IFastEnumerable <T> Where <T>(this IFastEnumerable <T> source, Func <T, bool> predicate) => new WhereFastIterator <T>(source, predicate);
public static IEnumerable <T> ToEnumerable <T>(this IFastEnumerable <T> source) => new FastEnumerableToEnumerable <T>(source);
public static IFastEnumerable <R> Select <T, R>(this IFastEnumerable <T> source, Func <T, R> selector) => new SelectFastIterator <T, R>(source, selector);
