jameskerr

import Base from "controllers/base";

export default class extends Base {
  static targets = ["checkbox", "toggler", "count", "menu", "hide"];

  mount() {
    this.on("turbo:morph", document, this.update);
    this.on("click", this.togglerTarget, this.toggle);
  }

kyrylo

# frozen_string_literal: true

class ApplicationService
  def self.call(...)
    new(...).call
  end

  def initialize(...)
  end
end

mjankowski

# frozen_string_literal: true

# RE: https://github.com/rails/rails/issues/50776#issuecomment-2148033957

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  gem "rails", "7.1.3.3"

dhh

/*
  ERB template chunk from The Feed's display of emails:

  <section class="postings postings--feed-style" id="postings"
      data-controller="pagination" data-pagination-root-margin-value="40px">
    <%= render partial: "postings/snippet", collection: @page.records, as: :posting, cached: true %>

    <%= link_to(spinner_tag, url_for(page: @page.next_param),
          class: "pagination-link", data: { pagination_target: "nextPageLink", preload: @page.first? }) unless @page.last? %>
  </section>

empijei

package csrf

import "errors"

// This is just an example on how to reduce redundant code in Go
// Original file: https://github.com/gofiber/csrf/blob/dde96da6711a2cc01709a66730c2e16328b22047/main.go

// csrfFromExtractor returns a function can be used to bind to a parameter name to extract a csrf token from a Ctx.
func csrfFromExtractor(errMessage string, extractor func(c *fiber.Ctx, param string) string) func(string) func(c *fiber.Ctx) (string, error) {
	return func(param string) func(c *fiber.Ctx) (string, error) {

ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

rushilgupta

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

dhh

# Original Rails controller and action
class EmployeesController < ApplicationController
  def create
    @employee = Employee.new(employee_params)
    
    if @employee.save
      redirect_to @employee, notice: "Employee #{@employee.name} created"
    else
      render :new
    end

bokmann

# Thee will be more information here when I share the entire problem space I'm working on, but
# in short, this is preview material for my second talk in a series called "What Computer Scientists Know".
# The first talk is on recursion, and goes through several examples., leading up to a problem based
# on a simple puzzle that initial estimates based on performance of a previous puzzle would take years
# to solve on modern computers with the techniques shown in Ruby. That sets the stage for improving the
# performance of that problem with threading, concurrency, and related tuning.
#
# The second talk is on threading and concurrency, touching on algorithmic performance as well.
# Using some knowledge of the problem (board symmetry, illegal moves, etc), we reduce the problem space
# to about .5% of what we initially thought it was.  Still, the initial single threaded solution took more