Josh Beckman joshbeckman

Server scripts

This is the source for the scripts discussed in https://robots.thoughtbot.com/improving-user-experience-with-shell-scripts

Both scripts are in the bin/ directory of the repo that contains all the markdown documents for blog posts. Users run bin/server and everything is automatically set up for them to view a local preview of the blog. bin/server-setup is a dependency of bin/server and is never run directly by users.

Maitre-d is the name of the "blog engine" discussed in the article.

Starving the Event Loop with microtasks

"What's the Event Loop?"

Sparked from this twitter conversation when talking about doing fast async rendering of declarative UIs in Preact

These examples show how it's possible to starve the main event loop with microtasks (because the microtask queue is emptied at the end of every item in the event loop queue). Note that these are contrived examples, but can be reflective of situations where Promises are incorrectly expected to yield to the event loop "because they're async".

setTimeout-only.js is there to form a baseline

Your blockchain must have all of the following properties:

It's a merkle tree, or a construct with equivalent properties.
There is no single point of trust or authority; nodes are operated by different parties.
Multiple 'forks' of the blockchain may exist - that is, nodes may disagree on what the full sequence of blocks looks like.
In the case of such a fork, there must exist a deterministic consensus algorithm of some sort to decide what the "real" blockchain looks like (ie. which fork is "correct").
The consensus algorithm must be executable with only the information contained in the blockchain (or its forks), and no external input (eg. no decisionmaking from a centralized 'trust node').

If your blockchain is missing any of the above properties, it is not a blockchain, it is just a ledger.

	<snippet>
	<content><![CDATA[
	/**
	* Description
	* @constructor
	* @alias module:$TM_FILENAME
	* @param {TYPE} [param]
	* @param {TYPE} [?param.val=1j]
	* @example var x = new require('$TM_FILENAME');
	* @tutorial <tutorial-name>

	# mix.exs file dependencies:
	# defp deps do
	# [
	# {:sweet_xml, "~> 0.4.0"},
	# {:json, "~> 0.3.0"}
	# ]
	# end

	defmodule ElixirXml do
	import SweetXml

	;--ledger--
	~ Monthly
	Expenses:Rent 5000 Rs
	Expenses:Groceries 3500 Rs
	Expenses:Domestic 4000 Rs
	Expenses:Electricity 1500 Rs
	Expenses:Entertainment 2000 Rs
	Expenses:Food 1000 Rs
	Expenses:Fitness 500 Rs
	Expenses:Hosting 2500 Rs

	const I = x => x
	const K = x => y => x
	const A = f => x => f (x)
	const T = x => f => f (x)
	const W = f => x => f (x) (x)
	const C = f => y => x => f (x) (y)
	const B = f => g => x => f (g (x))
	const S = f => g => x => f (x) (g (x))
	const S_ = f => g => x => f (g (x)) (x)
	const S2 = f => g => h => x => f (g (x)) (h (x))

	import easypost
	import argparse
	import time


	def manifest(tracking_codes):
	print("Manifesting: %s" % ", ".join(tracking_codes))
	shipments = [easypost.Shipment.retrieve(tracking_code)
	for tracking_code in tracking_codes]
	batch = easypost.Batch.create(shipments=shipments)

	// Fork & examples for the one-line version by @vladimir-ivanov:
	//let softmax = (arr) => (index) => Math.exp(arr[index]) / arr.map(y => Math.exp(y)).reduce((a, b) => a + b);
	//
	// Also see comments for improvements

	function softmax(arr) {
	return arr.map(function(value,index) {
	return Math.exp(value) / arr.map( function(y /value/){ return Math.exp(y) } ).reduce( function(a,b){ return a+b })
	})
	}

	"""
	Interacting with the Narro.co API with Python

	### Implementation

	1. ask narro for authorization_code
	2. visit the url to grant permission
	3. paste the authorization_code into the script
	4. exchange the authorization_code + secret_key for an access token
	5. use the access token