JS Performance Tests

There are many great performance test suites out there, but sometimes they're more clumsy than I wish. And because write such test suite isn't hard at all, I did it.

You basically iterate the code few million times and measure time it took. For this all modern browsers support “performance” class with more precise time measurements.

The most basic test suite may look like this:

1. let results, repeats = 1000000, data = null; function test(name, testFunc) { let startTime = performance.now(); for (let i = 0; i < repeats; i++) testFunc(i); let totalTime = performance.now() - startTime; results.push({"name": name, "value": testFunc(0), "time": totalTime}); }
3. // Call the test
4. test("isNaN", function () { return !isNaN("abc"); });
6. // Show results in the console
7. results.sort(function (a, b) { return a.time - b.time; });
8. console.log(results);

For convenience I added many GUI features, like it creates a list of all tests and outputs the results into a page (DOM), rather than just a console.

Qik

At home we use several apps: Wunderlist for shopping, Dropbox for file sharing, shared calendars, custom bookcase manager I wrote over a decade ago and we often use our own websites for notes or cooking recipes.

There are tons of cool stuff you can do with recipes, with proper data pool, of course. It can suggest meals to cook, considering recent meals. You can look for a meal according to ingredients you have. You can cap those meals by calories or require certain dietetic restrictions.

You can create a weekly dishes and calculate efficient grocery shopping for required ingredients. The main limitation is managing the data, which I'm currently working on, but sadly without much success.

It would need RFID chip on products, because scanning EAN can add or remove the product to/from stock or show you relevant info, like nutrition facts (fetched for it from from a database), but doesn't give you expiration date of the particular food item.

You can take a picture of the date and use OCR, but on e.g. some PET bottles it's very hard to read and it's necessary to do it both times, that is when storing as well as when retrieving (to sign away the correct item).

Qik Logo

There are also many other things the family could share, like contacts, business hours, schedules, copies of receipts and invoices, stock of toiletries or cleaning products or even food expiry dates for long-term products.

I don't really see anybody keeping an eye on food expiration dates, it just requires too much effort. This is a task for AI/ML, but that's a story for another day.

And more good news, some modules from Quid are compatible with Qik.