Zvi nivertech

Big-O Time Complexities for Elixir data structures

Map [1]

Operation	Time Complexity
Access	`O(log n)`
Search	`O(log n)`
Insertion	`O(n)` for <= 32 elements, `O(log n)` for > 32 elements [2]
Deletion	`O(n)` for <= 32 elements, `O(log n)` for > 32 elements

Functional Track talks from NDC London 2017

Also, here is the list of all videos from NDC London 2017:

Wednesday 2017-01-18

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Sessions

Code	Title	Duration	Link
Keynote	Andy Jassy Keynote Announcement Recap	0:01	https://www.youtube.com/watch?v=TZCxKAM2GtQ
Keynote	AWS re:Invent 2016 Keynote: Andy Jassy	2:22	https://www.youtube.com/watch?v=8RrbUyw9uSg
Keynote	AWS re:Invent 2016 Keynote: Werner Vogels	2:16	https://www.youtube.com/watch?v=ZDScBNahsL4
Keynote	[Tuesday Night Live with Jame

	# This file contains the configuration for Credo and you are probably reading
	# this after creating it with `mix credo.gen.config`.
	#
	# If you find anything wrong or unclear in this file, please report an
	# issue on GitHub: https://github.com/rrrene/credo/issues
	#
	%{
	#
	# You can have as many configs as you like in the `configs:` field.
	configs: [

	pragma solidity ^0.4.11;

	/**
	* Ticker Exchange is a service for registering asset ticker symbols
	* and pointing them to a particular resource, for example an ENS
	* resolver or a token contract.
	*
	* Ticker hashes are hierarchical. erc20 token "BNT", which is contained
	* within ETH, is found using pathhash("ETH:BNT", ":"). If BNT creates
	* sub-token XYZ then those tickers can be registered with "ETH:BNT:XYZ".

	import hashlib as hasher
	import datetime as date

	# Define what a Snakecoin block is
	class Block:
	def __init__(self, index, timestamp, data, previous_hash):
	self.index = index
	self.timestamp = timestamp
	self.data = data
	self.previous_hash = previous_hash

	balance = 1.0 # amount of reserve tokens
	supply = 1000.0 # amount of smart tokens
	crr = 0.001 # arbitrary reserve ratio

	def printInfo():
	price = computePrice()
	print "balance", balance, "supply", supply, "price", price

	def computePrice():
	return balance / (supply * crr)

	# LVDB - LLOOGG Memory DB
	# Copyriht (C) 2009 Salvatore Sanfilippo <[email protected]>
	# All Rights Reserved

	# TODO
	# - cron with cleanup of timedout clients, automatic dump
	# - the dump should use array startsearch to write it line by line
	# and may just use gets to read element by element and load the whole state.
	# - 'help','stopserver','saveandstopserver','save','load','reset','keys' commands.
	# - ttl with milliseconds resolution 'ttl a 1000'. Check ttl in dump!

	import os
	import re

	import kubernetes
	import logging

	import math
	from kubernetes.client import V1Container
	from kubernetes.client import V1EnvVar
	from kubernetes.client import V1Job