DmitrySoshnikov

// by Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
// MIT Style License.

// Short URL for this example to run online is: http://cpp.sh/333

#include <iostream>
#include <vector>
#include <ctype.h>
#include <cstring>

DmitrySoshnikov

/**
 * NFA (Non-deterministic finite automata)
 *
 * A formalism for regular grammars (to recognize strings based on regular
 * expressions).
 *
 * Regexp parser to transform AST to NFA:
 * https://www.npmjs.com/package/regexp-tree
 *
 * NFA/DFA fragment examples:

DmitrySoshnikov

/**
 * DFA minization.
 *
 * A DFA table is minimized using N-equivalence algorithm.
 *
 * by Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
 */

/**
 * Non-minizied DFA table for `/a|b/`.

DmitrySoshnikov

/**
 * Classic RegExp implementation (NFA, DFA).
 *
 * by Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
 * MIT License, 2017
 */

/**
 * Epsilon.
 */

DmitrySoshnikov

/**
 * Calculator grammar for a parser in JavaScript.
 *
 * syntax-cli -g calculator.ast.js -m LALR1 -o CalcParser.js
 *
 * const CalcParser = require('./CalcParser.js');
 * console.log(CalcParser.parse('2 + 2 * 2')); // AST
 */

{

DmitrySoshnikov

;  ___           _        __ ___  __ ___
; / __|_ _  __ _| |_____ / /| __|/  \_  )
; \__ \ ' \/ _` | / / -_) _ \__ \ () / /
; |___/_||_\__,_|_\_\___\___/___/\__/___|

; An annotated version of the snake example from Nick Morgan's 6502 assembly tutorial
; on http://skilldrick.github.io/easy6502/ that I created as an exercise for myself
; to learn a little bit about assembly. I **think** I understood everything, but I may
; also be completely wrong :-)

DmitrySoshnikov

%token STRING NULL NUMBER TRUE FALSE

%start JSONText

%%

JSONText : JSONValue;

JSONString : STRING;

DmitrySoshnikov

/* by Dmitry A. Soshnikov */

var object = (function () {

    // private
    var _x = 10;

    // also private
    function _privateFunc() {
        return _x;

DmitrySoshnikov

Map.prototype.filter ( callbackfn [ , thisArg ] )

NOTE callbackfn should be a function that accepts three arguments. filter calls callbackfn once for each key/value pair present in the map object, in key insertion order, and returns a new filtered map. callbackfn is called only for keys of the map which actually exist; it is not called for keys that have been deleted from the map.

If a thisArg parameter is provided, it will be used as the this value for each invocation of callbackfn. If it is not provided, undefined is used instead.

callbackfn is called with three arguments: the value of the item, the key of the item, and the Map object being traversed.

filter does not directly mutate the object on which it is called but the object may be mutated by the calls to callbackfn.

DmitrySoshnikov

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application: