dannvix’s gists

dannvix / v8-embedder.cpp

Created April 2, 2019 15:16

Cross-context JavaScript function invocation with embedded Google V8

	#include "v8/libplatform/libplatform.h"
	#include "v8/v8.h"
	#include <iostream>
	#pragma comment(lib, "v8_monolith")

	int main() {
	auto platform = v8::platform::NewDefaultPlatform();
	v8::V8::InitializePlatform(platform.get());
	v8::V8::Initialize();

dannvix / NetflixSmallerSubtitles.js

Created February 4, 2018 09:06

Make the SVG-based subtitles smaller on Netflix web player

	// Only applied for "image-based timed text" (i.e. SVG-based, like Chinese, Japanese, ...)
	// For DFXP-based subtitles (e.g., English), try the hidden settings: https://www.netflix.com/SubtitlePreferences
	(() => {
	const installScaler = () => {
	const subRectElem = document.querySelector('rect.image-based-subtitles-rect');
	if (subRectElem) {
	const subWrapperElem = subRectElem.parentNode;

	const MutationObserver = window.MutationObserver \|\| window.WebKitMutationObserver;
	const config = {attributes: true, childList: true, characterData: true, };

dannvix / mydft.py

Last active October 23, 2024 07:18

Intuitive impementation of discrete Fourier transform (and inverse DFT) in Python (without numpy)

	#!/usr/bin/env python3

	import math

	# >> Discrete Fourier transform for sampled signals
	# x [in]: sampled signals, a list of magnitudes (real numbers)
	# yr [out]: real parts of the sinusoids
	# yi [out]: imaginary parts of the sinusoids
	def dft(x):
	N, yr, yi = len(x), [], []

dannvix / thread_pool.hpp

Created March 21, 2016 14:55

Thread pool using std::thread and boost::lockfree::queue

	#include <boost\lockfree\queue.hpp>
	#include <iostream>
	#include <thread>
	#include <atomic>
	#include <vector>
	#include <memory>
	#include <condition_variable>
	#include <functional>

	template<typename ItemType, unsigned long ulQueueCapacity>

dannvix / c99-heap.c

Created October 8, 2015 14:58

Simple std::priority_queue-like container implemented in C99, without error handling and thread-safety

	/*
	* c99-heap.c
	* - Description: Simple std::priority_queue-like container implemented in C99, without error handling and thread-safety
	* - Author: Shao-Chung Chen
	* - License: CC0
	*/
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <stdbool.h>

dannvix / c99-vector.c

Created October 8, 2015 14:57

Simple std::vector-like container implemented in C99, without error handling and thread-safety

	/*
	* c99-vector.c
	* - Description: Simple std::vector-like container implemented in C99, without error handling and thread-safety
	* - Author: Shao-Chung Chen
	* - License: CC0
	*/
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

dannvix / replace-fonts-bookmarklet.js

Created August 1, 2015 15:09

Bookmarklet that replaces all fonts with “Hiragino Kaku Gothic Pro” on current webpage

 /*
  * Pack below script via http://jscompress.com/ to generate bookmarklet
  */
 (function(rootNode, fontFamily) {
     var hasChildTextNode = function(parentNode) {
         return [].some.call(parentNode.childNodes, function(node) {
             if (node.nodeType == Node.TEXT_NODE) {
                 console.log(node.nodeValue);
             }
             return node.nodeType == Node.TEXT_NODE;

dannvix / main-conditional-recusrion.cpp

Created July 31, 2015 14:44

Print 1 to 1000 without loop and conditional statements in C++11

	#include <iostream>
	#include <vector>

	int main(int n) {
	static int(*f[])(int) = {main, [](int)->int{exit(0);}};
	std::cout << n << std::endl;
	return f[n/1000](n+1);
	}

dannvix / es6-tagged-template.js

Created July 13, 2015 14:22

Python-like template string in ECMAScript 6

	// Python-like template string in ECMAScript 6 "tagged template"
	// inspired from http://stackoverflow.com/a/22619256
	function formatter(literals, ...substitutions) {
	return {
	format: function() {
	let out = [], i = 0, k = 0;
	for (i,k; i < literals.length; i++) {
	out[k++] = literals[i];
	out[k++] = Number.isInteger(substitutions[i]) ?
	arguments[substitutions[i]] :

dannvix / RainbowEverything.js

Created June 27, 2015 04:05

Make all text on webpage looks Rainbow!

	/rainbowEverything=/(function(window) {
	var parseRgbColorStrToHsl = function(rgbColorStr) {
	// input: "rgb(12, 34, 56)";
	var rgbValues = rgbColorStr.substring(4).replace(/\s/g, "").split(","),
	r = parseFloat(rgbValues[0])/255,
	g = parseFloat(rgbValues[1])/255,
	b = parseFloat(rgbValues[2])/255;
	var max = Math.max(r, g, b), min = Math.min(r, g, b);
	var h = 0, s = 0, l = (max + min) / 2;
	if (max == min) {

Dan Chen dannvix