List all Rails helper methods

Just wanted to share a snippet of code to get all Rails helper methods:







Popular posts from this blog

Ruby HTTP server from the ground up

Image
Getting something to work quickly is important when you are starting out, but if you want to become better at programming it's important to know a few levels below the abstractions you are used to be working with. When it comes to Web development it's important to know how HTTP works, and what better way to do that than go through baptism by fire and build our own HTTP server. How does HTTP look anyway? HTTP is plaintext protocol implemented over TCP so we can easily inspect what requests look like ( HTTP 2 is actually no longer plaintext, it's binary for efficiency purposes ). One way to look at request structure is to use curl with -v (verbose) flag: curl http://example.com/something -H "x-some-header: value" -v Outputs GET /something HTTP/1.1 Host: example.com User-Agent: curl/7.64.1 Accept: */* x-some-header: value And in response we get HTTP/1.1 404 Not Found Age: 442736 Cache-Control: max-age=604800 Content-Type:
Read more

Faster Google Maps load times

Image
Google Maps is notoriously slow. The moment you add a Google Map to your page you can cut your Lighthouse performance score in half. There are several ways you can fight with it: Add async/defer to your Google script - certainly helps, but no much. This technique is very common so I won't be talking about it. Loading the map only when a user scrolls to it. This works well the map is located below the fold. Code . Using a static google maps image. There are cases when you might not need an interactive map and an image is all you need. The API for it is surprisingly versatile. Code . Skipping fonts loading. Whenever you include Google maps script it automatically fetches a Roboto font. The map works perfectly fine without it, you can shave off a decent amount of time if you know how to block the font. Code . Using a static preview of the map and then loadi
Read more

Turbocharge HTTP requests in Ruby

Image
The problem The slowest part in many applications is I/O, especially network I/O. We spend a lot of trying to make sure we reduce the number of calls and cache results of API calls to 3rd party services and resources. Imagine we want to get data from Rick and Morty API . In this article, we are going to speed up subsequent requests to this API by almost 4x times . The solution And yet there's a trick that even very senior developers and popular API library/clients forget about that can shave off precious time of your network calls built right into HTTP. Establishing an HTTP connection is very costly, especially if it uses TLS . This is a fixed price added to your HTTP calls that can be avoided by using keep-alive - a mechanism built into HTTP. According to Wiki : HTTP keep-alive, or HTTP connection reuse, is the idea of using a single TCP connection to send and receive multiple HTTP requests/responses, as opposed to opening a new connection
Read more