function cons(x,xs){return[x,xs];}
var emptyList=null,head=attr(0),tail=attr(1);function arrayAsList(inputArray){return reverseList(inputArray.reduce(flip(cons),emptyList));}
var list=varArgs(arrayAsList);function listAsArray(list){return foldR(function(arraySoFar,listItem){arraySoFar.unshift(listItem);return arraySoFar;},[],list);}
function map(fn,list){return list?cons(fn(head(list)),map(fn,tail(list))):emptyList;}