skanev

Chronicle

I’m building an app on Twitch. Here’s an outline of what’s going on. You watch here.

Motivation

I’d like make a non-trivial web application that is both (1) useful to me on a daily basis and (2) I can use as a test-bed for experimentation with different tech. Functionality-wise, I imagine it will end up being a smörgåsbord of things I need (calories/exercise tracking, expense tracking, simple notes, todo lists, daily habits, what have you). Tech-wise, it will start as a classic Rails app, but once this is done, I might do things like:

• Create a GraphQL API and build a React SPA front end
• Build separate mobile clients with iOS, Android, React Native, Flutter, etc.

skanev

import {useEffect, useState} from 'react'
import {
  combineLatest,
  debounceTime,
  distinctUntilChanged,
  filter,
  from,
  fromEvent,
  map,
  Observable,

skanev

console.log('baba')

// 1. Literal types
{
  let meta: 'foo' = 'foo'

  meta = 'foo'
  // @ts-expect-error
  meta = 'bar'

skanev

Advent of Code 2022 solutions in Perl Ruby

Just for kicks, I'm trying to solve them with semi-golfed Ruby. That is:

• As short as possible, but
• Have some whitespace to make them somewhat readable
• Avoid single-letter identifiers to keep them somewhat readable
• Don't make them too short when they are short enough

Each solution parses the input file and outputs the answer.

skanev

#!/usr/bin/env zsh

typeset -gA jump_locations

jump_locations=(
  zeitwerk ~/prj/zeitwerk
  rails    ~/prj/rails-dev-box/rails
  tmp      ~/tmp
)

skanev

import Foundation
import RxSwift
import RxRelay
import Apollo

// MARK: - Apollo Support

enum ApolloError: Error {
  case genericError(String)
  case graphqlErrors([GraphQLError])

skanev

I like GraphQL for the regular reasons. It feels to me that it delivers on its promise, althought it's not simple or straightforward to start using it (but neither is SQL itself).

I'll approach this from two perspectives:

Using a GraphQL API as a client

I had the experience on this side when doing a small internal app ontop of the GitHub GraphQL API. The previous version was using the REST API and it had a

skanev

diff --git a/command.c b/command.c
index c31fa81..11d7483 100644
--- a/command.c
+++ b/command.c
@@ -273,10 +273,13 @@ exec_mca()
 
 		if (secure)
 			break;
-		if (shellcmd == NULL)
+		if (shellcmd == NULL) {

skanev

When the Ark eventually lands after the Flood, Noah releases all the animals and makes a proclamation: "Go forth and multiply".

Several months later, Noah is delighted to see that all the creatures are breeding, except a pair of snakes, who remain childless. Noah asks: "What's the problem?" The snakes have a simple request of Noah: "Please cut down some trees and let us live there."

Noah obliges, leaves them alone for a few weeks and then returns. Sure enough, there are lot of baby snakes. Noah asks why it was important to cut down the trees, and the snakes reply: "We're adders, and we need logs to multiply."

skanev

# encoding: utf-8

def annotate(string, code = '4')
  string.gsub(/@(.*?)@/, "\e[#{code}m\\1\e[0m")
end

def colorize(string)
  string.gsub(/#(.*?)#/, "\e[\\1m").gsub(/##/, "\e[0m")
end