public IEnumerable <string> Get()
{
Func <int, string, Func <int, string> >
fizzBuzzClosure = (replaceNumber, replaceValue) =>
number => number % replaceNumber == 0? replaceValue : string.Empty;
var fizzBuzzDelegates = _replacements.Select(rep => fizzBuzzClosure(rep.Key, rep.Value));
return
(_range.GetValues()
.Select(n => new {
Number = n,
FizzBuzz = fizzBuzzDelegates.Aggregate(string.Empty, (word, fizzBuzz) => word + fizzBuzz(n))
})
.Select(result =>
string.IsNullOrEmpty(result.FizzBuzz)?
result.Number.ToString() :
result.FizzBuzz));
}