RosettaCodeData/Task/Catamorphism/Elena/catamorphism.elena

import system'collections;
import system'routines;
import extensions;
import extensions'text;

public program()
{
    var numbers := new Range(1,10).summarize(new ArrayList());

    var summary := numbers.accumulate(new Variable(0), (a,b => a + b));

    var product := numbers.accumulate(new Variable(1), (a,b => a * b));

    var concatenation := numbers.accumulate(new StringWriter(), (a,b => a.Printable + b.Printable));

    console.printLine(summary," ",product," ",concatenation)
}