samolabams

export type Response<T, E> = Ok<T, E> | Err<T, E>;

class Ok<T, E> {
  readonly value: T;

  constructor(value: T) {
    this.value = value;
  }

  isOk(): this is Ok<T, E> {

samolabams

module.exports = {
  clearMocks: true,
  coverageDirectory: 'coverage',
  coveragePathIgnorePatterns: [
    '/node_modules/',
    '/__fixtures__/',
    '/__tests__/',
    '/(__)?mock(s__)?/',
    '/__jest__/',
    '.?.min.js',

samolabams

package main

import (
	"errors"
	"github.com/streadway/amqp"
	"log"
	"os"
	"time"
)

samolabams

go func() {
	for {
		err = rmq.Stream(cancelCtx)
		if errors.Is(err, rabbitmq.ErrDisconnected) {
			continue
		}
		break
	}
}()

samolabams

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

samolabams

function loadModule(filename, module, require) {
  const wrappedSrc = `
    function(module, exports, require) {
      ${fs.readFileSync(filename, 'utf8')}
    }(module, module.exports, require)
  `;
   eval(wrappedSrc);
}

samolabams

#!/bin/bash

kubectl create -f https://gist.githubusercontent.com/kevinswiber/e6a8245930676c3da3448b2bb79f23fd/raw/0869b72410851e2ab02d0c1c30443f4083345066/configmap.yaml
kubectl create -f https://gist.githubusercontent.com/kevinswiber/e6a8245930676c3da3448b2bb79f23fd/raw/0869b72410851e2ab02d0c1c30443f4083345066/deployment.yaml
kubectl create -f https://gist.githubusercontent.com/kevinswiber/e6a8245930676c3da3448b2bb79f23fd/raw/0869b72410851e2ab02d0c1c30443f4083345066/service.yaml

samolabams

sudo /Library/StartupItems/VirtualBox/VirtualBox restart

New Virtualbox: sudo launchctl load /Library/LaunchDaemons/org.virtualbox.startup.plist

samolabams

// sending to sender-client only
socket.emit('message', "this is a test");

// sending to all clients, include sender
io.emit('message', "this is a test");

// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");

// sending to all clients in 'game' room(channel) except sender

samolabams

Laravel's Dependency Injection Container in Depth

Translations: Korean (by Yongwoo Lee)

Laravel has a powerful Inversion of Control (IoC) / Dependency Injection (DI) Container. Unfortunately the official documentation doesn't cover all of the available functionality, so I decided to experiment with it and document it for myself. The following is based on Laravel 5.4.26 - other versions may vary.

Introduction to Dependency Injection

I won't attempt to explain the principles behind DI / IoC here - if you're not familiar with them you might want to read What is Dependency Injection? by Fabien Potencier (creator of the Symfony framework).