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using System;
public delegate Tuple<D1, DR1> Parser<D1, DR1> (D1 stream);
static class Combinator
{
public static Parser<L1, LR1> Lazy<L1, LR1> (Func<Parser<L1, LR1>> func)
{
return null;
}
public static Parser<C1, CR1> Choice<C1, CR1> (Parser<C1, CR1> parsers)
{
Parser<C1, CR1> tail = null;
Lazy (() => Choice (tail));
return null;
}
public static void Main ()
{
Choice ((int l) => Tuple.Create (1, 2));
}
}
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