memoize snippet found

memo.js

function memoizeConstantMethod(o, p) {
  var f = o[p], mf;
  var s = function(v) {return o[p]=v||mf};
  ((mf = function() {
    (s(function(){return value})).reset = mf.reset;
    return value = f.call(this);
  }).reset = s)();
}