public void TestTransducers()
{
var filter = new FilterTransducer<int>(x => x % 3 == 0);
var square = new MapTransducer<int,int>(x => x * x);
var addone = new MapTransducer<int,int>(x => x + 1);
var toString = new MapTransducer<int,string>(Convert.ToString);
var reducer = filter.Transduce(
square.Transduce(
addone.Transduce(
toString.Transduce(
new ListReducer<string>()))));
var input = this.GetInput();
var output = new List<string>();
foreach (var x in input)
{
output = reducer.Apply(output, x);
}
this.AssertOutput(output);
}
public void TestTransducerDocumentationA()
{
Func<List<string>, string, List<string>> appender = (result, value) => {
result.Add(value);
return result;
};
var filter = new FilterTransducer<int>(x => x % 3 == 0);
var square = new MapTransducer<int,int>(x => x * x);
var addOne = new MapTransducer<int,int>(x => x + 1);
var toString = new MapTransducer<int,string>(Convert.ToString);
var xform = Composer
.Compose(filter)
.Compose(square)
.Compose(addOne)
.Compose(toString)
.Compose();
var input = Enumerable.Range(0,10);
var output = Transducer.Transduce(xform, appender, new List<string>(), input);
this.AssertOutput(output);
}