Adam Laughlin a-laughlin

example to illustrate variable values in different scopes, in both assignment and re-assignment cases.

... html here ...
<script>
// Scope chain example, showing lexical and variable environments in a call tree.
// "this" is always window
// [name] is execution context. E.g., "win" is the window execution context.
// "[name]Vars" corresponds to [name]'s variable environment (function scoped, identifiers defined with var, and function args)
// "[name]Lexs" corresponds to [name]'s lexical environment (block scoped, identifiers defined with const and let)

High level bash scripting cheatsheet https://devhints.io/bash

Reference for many shell commands http://www.grymoire.com/Unix/index.html

Diff/Patch

diff filea fileb
# ... file differences

Python Reference

CheatSheets

Python Basics: Data Science

importing data

python 3 (pt 1 of 2)

python 3 (pt 2 of 2)

	sender chooses whether to communicate
	(noise\|barriers)
	sender chooses intended receivers (experience graph for each)
	(noise\|barriers) barrier: architecture prevents
	for each intended receiver:
	sender chooses concepts to communicate (noise\|barriers) (experience graph for each)
	sender maps own concepts to receiver concepts (noise\|barriers)
	sender encodes receiver concepts to language
	syntax: (noise\|barriers)
	semantics: (noise\|barriers)

	different kinds of modules through JS history
	name year sync async encapsulatable immutable dependency defs dep resolution code example
	-------
	namespaces 2000: yes no no no none manual var App = {};
	revealing module 2005: yes no yes no global variables manual var myModule = (function($){return {fetch:$.get}})(jQuery)
	CommonJS 2009: yes no yes yes file names graph module.exports={foo:'bar'} const foo = require('foo').foo
	AMD 2009: no yes yes no file names graph define(['jQuery','Application'],($,App)=>{}), require('foo',(foo)=>{...use foo...})
	ES modules 2016: yes yes yes yes sub-file parts graph import {foo} from 'foo', export const foo='bar'; import('foo').then((module)=>module.foo)

	var mufasa = {
	name: "Mufasa",
	sing() {
	var inner = function() {
	console.log("inner:this", this);
	};
	var innerStrict = function() {
	'use strict';
	console.log("innerStrict:this", this);
	};

	var mufasa = {
	name: "Mufasa",
	sing() {
	var inner = function() {
	console.log("inner:this", this);
	};
	var innerStrict = function() {
	'use strict';
	console.log("innerStrict:this", this);
	};

	// assumes create-react-app, and files served from src/
	T0: define time
	file tree exists. Nothing imported. Static intra-file code graphs exist.
	T1: JS run time starts.
	index.js imports files:
	Functions in imported files run: JS graphs updated.
	Conceptual component graph exists.
	T2: React run time starts
	App Component runs. Virtual dom root exists.
	loop:

	javascript:((alert,$)=>{
	const story_template = '### Story\nAs a ___, I should be able to ___, so that ___.\n\n### Acceptance Criteria\n - [ ] __\n - [ ] __\n - [ ] __\n - [ ] Tests Written (TDD)\n - [ ] Code Written\n - [ ] Documentation Written in Relevant Readme\n\n### Depends On\n- NA\n\n### Relates To\n- NA';
	/utility/
	const poll = (interval=100,maxwait=1000)=>(predicate,msg)=>(new Promise((res,rej)=>{
	let waited = -1;
	const t = setInterval(()=>{
	const passes = predicate();
	if(passes){clearInterval(t);res(passes);}
	if((waited+=interval)>=maxwait) {clearInterval(t);rej(msg);}
	},interval);