static bool ComparerContains(TEnumerable source, [AllowNull] TSource value, IEqualityComparer <TSource> comparer)
{
using var enumerator = source.GetEnumerator();
while (enumerator.MoveNext())
{
if (comparer.Equals(enumerator.Current, value !))
{
return(true);
}
}
return(false);
}
static bool DefaultContains(TEnumerable source, TSource value)
{
using var enumerator = source.GetEnumerator();
while (enumerator.MoveNext())
{
if (EqualityComparer <TSource> .Default.Equals(enumerator.Current, value))
{
return(true);
}
}
return(false);
}
internal AsyncEnumerator(TEnumerable enumerable, CancellationToken cancellationToken)
{
enumerator = enumerable.GetEnumerator();
this.cancellationToken = cancellationToken;
}