There is many services where you can test your programming skills. Not so long time ago I found out about Codility which provides programming tests in many languages. It's built mainly to help companies with hiring new programmers by providing automated platform to check candidates programming skills.
Though platform also has a programmer section, where you can test your knowledge and problem solving abilities for free.
Since the introduction of HTML5 it’s been possible to manage the browser history using the history and history.pushState API. It allows us to change the URL in the browser without the page refreshing. There are a lot of frameworks that already support the history and pushState API such as Backbone.js, Ember.js and Angular.js.
In this post, we’ll be looking at using the Browser push state without resorting to any framework. To do this we first need to have a way to check if the user has access to the history API.
There is a many ways to checksum the file, and many available ready to use programs. Sometimes there is a need to integrate a checksum into your app. Most of the time we want to checksum the file to detect a corruption after the copy, move or download file.
One of my best finds of the 2014 was Ngrok, service providing secure tunneling from your local machine to the web. It allows you to expose your locally running server to on-line in just a seconds, moreover you are able to access it on http and https. Each developer can find multiple use-cases for this kind of service.
It's multi-platform, stable, simple to use and free of charge service. Of course if you need, you can buy a license but you don't need to.