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Instructions

Unofficial guide on deploying a custom Optimism rollup on Kovan

Clone optimism contracts:

git clone https://github.com/ethereum-optimism/contracts-v2.git

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# review: bitcoin

- "blockchain"
- byzantine fault-tolerant consensus in an unpermissioned setting
    - before, only had BFT in permissioned setting
    - bitcoin: applied to digital currency, with limited "smart contract"
      support
- simplest version of this:
    - state machine for currency
    - replicated log (ledger) -> replicated state machine

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Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

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nginx 403 Forbidden Error hosting in User Home Directory

resources

• http://serverfault.com/questions/416787/nginx-403-forbidden-error-hosting-in-user-home-directory
• rails deploy with rvm, capistrano, uniron, nginx

runtime environment

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import nltk

text = """The Buddha, the Godhead, resides quite as comfortably in the circuits of a digital
computer or the gears of a cycle transmission as he does at the top of a mountain
or in the petals of a flower. To think otherwise is to demean the Buddha...which is
to demean oneself."""

# Used when tokenizing words
sentence_re = r'''(?x)      # set flag to allow verbose regexps
      ([A-Z])(\.[A-Z])+\.?  # abbreviations, e.g. U.S.A.