rxaviers

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

ryanchang

LLDB Cheat Sheet

A complete gdb to lldb command map.

Print out

• Print object

(lldb) po responseObject
(lldb) po [responseObject objectForKey@"state"]

• p - Print primitive type

rosylilly

先輩に学ぶ HTTP Status Code

超雑にまとめました。修正してください。

登場人物

• アプリケーション先輩: いつも忙しい。横に広がるのが得意(デブじゃない)。
• 後輩: 頼んでばっかしで役に立たない。
• サーバー先輩: アプリケーション先輩と仲がいい。Unix Socket でつながるくらい仲良し。
• プロクシ先輩: アプリケーション先輩とかサーバー先輩と後輩の間を取り持って代わりに伝えたりしてくれる。たまに勝手にレスポンスを書き換える。

BuffaloWill

## IPv6 Tests
http://[::ffff:169.254.169.254]
http://[0:0:0:0:0:ffff:169.254.169.254]

## AWS 
# Amazon Web Services (No Header Required)
# from http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html#instancedata-data-categories
http://169.254.169.254/latest/meta-data/iam/security-credentials/dummy
http://169.254.169.254/latest/user-data
http://169.254.169.254/latest/user-data/iam/security-credentials/[ROLE NAME]

gnarf

Install

Either copy the aliases from the .gitconfig or run the commands in add-pr-alias.sh

Usage

Easily checkout local copies of pull requests from remotes:

• git pr 4 - creates local branch pr/4 from the github upstream(if it exists) or origin remote and checks it out
• git pr 4 someremote - creates local branch pr/4 from someremote remote and checks it out

r0l1

/* MIT License
 *
 * Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

uasi

require 'formula'

class Vim < Formula
  homepage 'http://www.vim.org/'
  url 'ftp://ftp.vim.org/pub/vim/unix/vim-7.3.tar.bz2'
  head 'https://vim.googlecode.com/hg/'
  sha256 '5c5d5d6e07f1bbc49b6fe3906ff8a7e39b049928b68195b38e3e3d347100221d'
  version '7.3.682'

  def features; %w(tiny small normal big huge) end

andywer

React - Functional error boundaries

Thanks to React hooks you have now happily turned all your classes into functional components.

Wait, all your components? Not quite. There is one thing that can still only be implemented using classes: Error boundaries.

There is just no functional equivalent for componentDidCatch and deriveStateFromError yet.

Proposed solution

arulrajnet

# -*- coding: utf-8 -*-

"""
Python Script to download the Chrome Extensions (CRX) file directly from the google chrome web store.
Referred from http://chrome-extension-downloader.com/how-does-it-work.php
"""

from __future__ import division
import argparse
import requests