tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

pballester

Procedure for Mongodb Logrotate

The default install for Mongodb does not configure log rotation.

In /etc/logrotate.d/mongod

/var/log/mongodb/*.log {
    daily
    rotate 30
    compress

dateext

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

MaxPleaner

# Ruby = 5.times { |i| puts i }
# Coffee   = (1).times (i) -> console.log i
Number.prototype.times = (cb) ->
  i = -1;
  while (++i < this) then cb(i)
  +this

# Ruby = 1.upto(5) { |i| puts i }
# Coffee   = (1).upto 5, (i) -> console.log i
Number.prototype.upto = (t, cb) ->

mikberg

import { MongoClient } from 'mongodb';
import promisify from 'es6-promisify';

let _connection;

const connect = () => {
  if (!process.env.MONGO_CONNECTION_STRING) {
    throw new Error(`Environment variable MONGO_CONNECTION_STRING must be set to use API.`);
  }

mrmlnc

Базовые возможности

process — это объект, позволяющий получить информацию о типе запущенного процесса (рендеринг или основной процесс), версию Chrome и Electron, а также путь до выполняемого js-файла.

Пользовательские элементы DOM:

Объект File — это абстракция над нативным File, передающая стандартному HTML5 file API путь к физическому расположению файла в файловой системе пользователя.

ethers

/*
In Ethereum, a contract can be written so that it returns a value for eth_call.
A Dapp can then check for success or error value of eth_call, before calling eth_sendTransaction,
to take advantage of eth_call effectively being a "preview" of the code flow that the transaction
will take.  In traditional client-server, clients can't ask servers beforehand what's going to
happen when the client makes a call; with Dapps contracts can be written so that clients can ask
for a "preview" of what is going to happen, before any funds/ethers are actually utilized
(eth_call does not cost any ethers).

Note: it is possible that in between eth_call and when eth_sendTransaction is actually mined,

EdwardBetts

from pprint import pformat
from typing import Any

from pygments import highlight
from pygments.formatters import Terminal256Formatter
from pygments.lexers import PythonLexer


def pprint_color(obj: Any) -> None:
    """Pretty-print in color."""

netwood

# -------------------------------------------------
# CDN CONFIGURATION
# -------------------------------------------------

#    Show "Not Found" 404 errors in place of other NGINX errors
  error_page 403 /404;
  error_page 404 /404;
  error_page 405 /404;
  error_page 500 501 502 503 504 /404;
  location  /404 {

LeCoupa

# How to set up Oplog Tailing on your Meteor application on Ubuntu. (production environment)
# We are going to create a replica set with only one member (the primary) so as to benefit from oplog tailing.
# More: https://github.com/meteor/meteor/wiki/Oplog-Observe-Driver


# 1. Stop MongoDB

$ sudo service mongodb stop