public static Func <T, T> Compile <T>(this XList <Expression <Func <T, T> > > expressions)
{
if (expressions.IsNullOrEmpty())
{
return((p) => p);
}
if (expressions.Count == 1)
{
return(expressions[0].Compile());
}
// return expressions.Aggregate<Expression<Func<T, T>>, Expression<Func<T, T>>>(p => expressions[0].Compile(p), (current, v) => current.ThenCompile(v)).Compile()
var resultExpression = expressions[0];
foreach (var ex in expressions.Skip(1))
{
Expression <Func <T, T> > currentExpression = resultExpression;
resultExpression = p => ex.Compile()(currentExpression.Compile()(p));
}
return(resultExpression.Compile());
}