D. Bohdan dbohdan

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

	The regex patterns in this gist are intended to match any URLs,
	including "mailto:[email protected]", "x-whatever://foo", etc. For a
	pattern that attempts only to match web URLs (http, https), see:
	https://gist.github.com/gruber/8891611


	# Single-line version of pattern:

	(?i)\b((?:[a-z][\w-]+:(?:/{1,3}\|[a-z0-9%])\|www\d{0,3}[.]\|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+\|\(([^\s()<>]+\|(\([^\s()<>]+\)))\))+(?:\(([^\s()<>]+\|(\([^\s()<>]+\)))\)\|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))

	#!/usr/bin/env bash
	# memusg -- Measure memory usage of processes
	# Usage: memusg COMMAND [ARGS]...
	#
	# Author: Jaeho Shin <[email protected]>
	# Created: 2010-08-16
	############################################################################
	# Copyright 2010 Jaeho Shin. #
	# #
	# Licensed under the Apache License, Version 2.0 (the "License"); #

	I turned this gist into a "real" repository. It is here: http://github.com/pete/cats .


	Here, placed side-by-side for comparison, are GNU's implementation of
	cat, Plan 9's implementation, Busybox's implementation, and NetBSD's
	implementation, Seventh Edition Unix (1979), and 4.3BSD.

	For good measure (and because I suppose I am now committed to collecting
	cats) also included are Second Edition Unix (in assembly) and Inferno's
	implementation (in Limbo) for good measure.

	#lang racket
	(require parser-tools/lex
	(prefix-in re- parser-tools/lex-sre)
	parser-tools/yacc)
	(provide (all-defined-out))

	(define-tokens a (NUM VAR))
	(define-empty-tokens b (+ - EOF LET IN))
	(define-lex-trans number
	(syntax-rules ()

	import sys
	import ctypes
	pyint_p = ctypes.POINTER(ctypes.c_byte*sys.getsizeof(5))
	five = ctypes.cast(id(5), pyint_p)
	print(2 + 2 == 5) # False
	five.contents[five.contents[:].index(5)] = 4
	print(2 + 2 == 5) # True (must be sufficiently large values of 2 there...)

	// Mimic type classes with additional param

	type 'a Num = {
	zero: 'a
	add: 'a -> 'a -> 'a
	mult: 'a -> 'a -> 'a
	fromInteger: int -> 'a }

	let intNum = {
	zero = 0

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	#!/bin/bash

	rm -rf .o .[568] test_*