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

jnrbsn

function j(u, c) {
  var h = document.getElementsByTagName('head')[0], s = document.createElement('script');
  s.async = true; s.src = u;
  s.onload = s.onreadystatechange = function () {
    if (!s.readyState || /loaded|complete/.test(s.readyState)) {
      s.onload = s.onreadystatechange = null; if (h && s.parentNode) { h.removeChild(s) } s = undefined;
      if (c) { c() }
    }
  };
  h.insertBefore(s, h.firstChild);

somebox

#!/bin/bash

# A script to set up a new mac. Uses bash, homebrew, etc.

# Focused for ruby/rails development. Includes many utilities and apps:
# - homebrew, rvm, node
# - quicklook plugins, terminal fonts
# - browsers: chrome, firefox
# - dev: iterm2, sublime text, postgres, chrome devtools, etc.
# - team: slack, dropbox, google drive, skype, etc

cmilfont

[https://alf.nu/ReturnTrue]

function reflexive(x) {
    return x != x;
}
reflexive(NaN)

function transitive(x,y,z) {
 return x && x == y && y == z && x != z;

ansulev

# Install Arch Linux with full encrypted btrfs subvolume inside luks
# Hardware: BIOS system, Intel GPU, Nvidia Optimus, Toshiba SSD, Wifi
# Please adjust for your needs.
# filename: install-arch-linux-on-btrfs-subvolume-inside-luks.txt
# The official guide: https://wiki.archlinux.org/index.php/Installation_Guide

# Download the archiso image from https://www.archlinux.org/download/
# Copy to a usb-drive
dd bs=4M if=archlinux.iso of=/dev/sdx status=progress oflag=sync # on linux

pongstr

Recipe

Install homebrew/services, this will be helpful, you'll see later. :D

$ brew tap homebrew/services 

thilinapiy

## Generate a key
# openssl rand -base64 741 > mongodb-keyfile
## Create k8s secrets
# kubectl create secret generic mongo-key --from-file=mongodb-keyfile
---
apiVersion: v1
kind: Service
metadata:
  name: mongo
  labels:

nikhilkumarsingh

from tkinter import *
from tkinter.colorchooser import askcolor


class Paint(object):

    DEFAULT_PEN_SIZE = 5.0
    DEFAULT_COLOR = 'black'

    def __init__(self):

shobhitsharma

HTTPS using localhost

To generate a local certiticate and using it, please follow these steps (note: replace MY_DOMAIN, MY_FILENAME and MY_PASSPHRASE based on your choice):

Step 1: Generate private key

openssl genrsa -out MY_FILENAME.key 4096

dhh

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers