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JavaScript implementation of cons, car and cdr
function cons(x, y) {
return function(w) { return w(x, y) };
};
function car(z) {
return z(function(x, y) { return x });
};
function cdr(z) {
return z(function(x, y) { return y });
};
var list = cons(1, cons(2, null));
document.writeln( car(list));
document.writeln( car(cdr(list)));
document.writeln( cdr(cdr(list)));
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