Argument-specific memoization
There is another way of memoizing expensive operations in JavaScript, which is also fit for argument-specific results:
base._fooCache = {};
base.foo = function(arg) {
if(base._fooCache[arg] === undefined) {
base. _fooCache[arg] = ...expensive operation...
}
return base. _fooCache[arg];
};
This just keeps a local key/value cache of the result of the expensive operation for the given argument. This only works for a single argument right now, but I guess it could be extended to multiple arguments.
