erincandescent

Foreward

This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.

It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.

Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2

Original Foreword: Some Opinion

The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and

huacnlee

.yarnrc

我们需要在 Rails 项目根目录配置 .yarnrc 告诉 Yarn 我们需要将 npm 的包缓存到 vendor/cache/npm 目录。

registry "https://registry.npm.taobao.org"
lastUpdateCheck 1561690751463
yarn-offline-mirror "./vendor/cache/npm"     
yarn-offline-mirror-pruning true

wildjcrt

require 'cgi'
require 'active_support'

def verify_and_decrypt_session_cookie(cookie, secret_key_base = Rails.application.secret_key_base)
  config = Rails.application.config
  cookie = CGI::unescape(cookie)
  salt   = config.action_dispatch.authenticated_encrypted_cookie_salt
  encrypted_cookie_cipher = config.action_dispatch.encrypted_cookie_cipher || 'aes-256-gcm'
  # serializer = ActiveSupport::MessageEncryptor::NullSerializer # use this line if you don't know your serializer
  serializer = ActionDispatch::Cookies::JsonSerializer

maxivak

Webpack in Rails

All code is available in example app - https://github.com/maxivak/webpacker-rails-example-app

Table of Contents

• NPM and Yarn
• Webpack and Webpacker

dinatih

# config/initializers/activestorage.rb
Rails.application.config.to_prepare do
  # Provides the class-level DSL for declaring that an Active Record model has attached blobs.
  ActiveStorage::Attached::Macros.module_eval do
    def has_one_attached(name, dependent: :purge_later, acl: :private)
      class_eval <<-CODE, __FILE__, __LINE__ + 1
        def #{name}
          @active_storage_attached_#{name} ||= ActiveStorage::Attached::One.new("#{name}", self, dependent: #{dependent == :purge_later ? ":purge_later" : "false"}, acl: "#{acl}")
        end

doitian

package main

import (
  "fmt"
  "crypto/hmac"
  "crypto/sha1"
  "crypto/aes"
  "crypto/cipher"
  "encoding/base64"
  "encoding/hex"

davidwessman

version: 2
jobs:
  build:
    working_directory: ~/mowers
    docker:
      - image: circleci/ruby:2.4.1-node
        environment:
          PGHOST: 127.0.0.1
          PGUSER: mower
          RAILS_ENV: test

egmontkob

Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2025-03-24: Commenting is disabled permanently. Previous comments are archived at web.archive.org. ]

---

Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

wbotelhos

require 'sidekiq/api'

# 1. Clear retry set

Sidekiq::RetrySet.new.clear

# 2. Clear scheduled jobs 

Sidekiq::ScheduledSet.new.clear

paulirish

// see for screenshot:
//     https://twitter.com/paul_irish/status/829090506084749312 

const http = require('http');

function requestHandler(request, response) {
	const headers = {
		'Server-Timing': `
		  sql-1;desc="MySQL lookup Server";dur=100,
		  sql-2;dur=900;desc="MySQL shard Server #1",