dfkaye

// This is not mine. 
// It was first published in 2005 or so by David Faden
// at http://www.revfad.com/flip.html.

// 23 March 2021 - ES6-ified

function flipString(aString) {	
  return String(aString)
    .split("")
    .map(c => flipTable[c] || c)

dfkaye

// 3 March 2021
// polyfill for the Array.prototype.at(index) method
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at

typeof Array.prototype.at == 'function' || (function() {
  Array.prototype.at = function (index) {
    // return this.slice(index)[0] // 3 March 2021: First impl.
    return this.slice(index).shift() // 4 March 2021: Nicer.
  }
})();

dfkaye

// 21 February 2021
// rAssign library, slightly refactored

// r-assign by micnic applies Object.assign() to a series of sources,
// then uses a schema against which to extract defined properties by type and name.
// see https://github.com/micnic/r-assign/

function rAssign(schema, ...sources) {

	// Check for valid schema provided

dfkaye

Multistable Cognitive Phenomena

https://en.wikipedia.org/wiki/Multistable_perception

• Multi-stable Cognitive Phenomena (eds. Kruse, Stadler) - https://www.amazon.com/dp/3540570829/
• Mental Models (Johnson-Laird) - https://www.amazon.com/dp/0674568818/
• Phase Transitions (Solé) - https://www.amazon.com/dp/0691150753
• Structure Sharing (Okasaki) - https://www.amazon.com//dp/0521663504
• Knowledge & Belief (Hintikka) - https://www.amazon.com/dp/1904987087
• Tense Logic (Prior) - https://www.amazon.com/dp/0198243111

dfkaye

Math in spreadsheets

Notes copied verbatim from Math in Google Sheets: Add, Sum, Subtract, Multiply, Divide, Square by Corey Bustos.

Mathematical spreadsheet operators

• Plus sign (+) ~ Addition
• Minus sign (-) ~ Subtraction
• Asterisk (*) ~ Multiplication
• Forward Slash (/) ~ Division

dfkaye

HTML entities for symbolic logic operators

See full reference at W3Schools HTML Math entities.

Mathematical

• + - plus
  • HTML: +
  • CSS: \002B
• − - minus

dfkaye

Metasyntactic Variables

foo, bar, baz, qux, quux, corge, grault, garply, waldo, fred, plugh, xyzzy, thud

Or so I have read…

In list form:

• foo
• bar

dfkaye

Reactive JQuery

28 January 2021

Turns out JQuery has almost everything we need to make it reactive (render-on-change-to-data). The virtual DOM is unnecessary if we have guards against unnecessary rendering. We don't need JSX to make it all look more like HTML templates.

This is heresy and not well thought out yet. Certain projects may do this already. None, I would bet serious Gamestop options, uses the SAM pattern.

JQuery has...

dfkaye

// 22 January 2021
// Refactoring of class function in behavioral at
// https://github.com/lmatteis/behavioral/blob/master/index.js

// TODO add tests

export { BProgram }

function BProgram() {
  this.running = [];

dfkaye

// 28 December 2020
// https://twitter.com/dfkaye/status/1343784103674400769
// Updated @dalnefre's actor model in a tweet:

var Actor = (a, e) => function c(b) {
  a = d => setTimeout(() => e.behavior(d)),
      e = { self: a, behavior: b, sponsor: c };
  return a
}