Amit Kotlovski amitkot

Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

How to Add a Watermark to Video

FFMPEG filters provide a powerful way to programmatically enhance or alter videos, and itâ€™s fairly simple to add a watermark to a video using the overlay filter. The easiest way to install ffmpeg is to download a pre-built binary for your specific platform. Then you donâ€™t have to worry about including and installing all the right dependencies and codecs you will be using.

Once you have ffmpeg installed, adding a watermark is as easy as passing your existing source through an overlay filter like so:

ffmpeg -i test.mp4 -i watermark.png -filter_complex "overlay=10:10" test1.mp4

Basically, weâ€™re passing in the original video, and an overlay image as inputs, then passing it through the filter, and saving the output as test1.mp4.

	import android.content.res.Resources;
	import android.support.annotation.NonNull;
	import android.util.DisplayMetrics;
	import android.util.TypedValue;

	/**
	* Convert between DP and pixels, like {@link java.util.concurrent.TimeUnit} does.
	* For example:
	* Dimens.DP.toPX(context.getResources(), 16); // 16dp to pixels
	* Dimens.PX.toDP(context.getResources(), 16); // 16px to dips

	var Web3 = require('web3');

	//url = "http://localhost:8545/jsonrpc";
	url = "https://mainnet.infura.io";
	//url = "http://13.229.54.28:8545/"; // override
	var web3 = new Web3(new Web3.providers.HttpProvider(url));
	var BigNumber = web3.utils.BN;
	var fs = require("fs");
	icoAbi = [{"constant":true,"inputs":[],"name":"cappedSaleStartTime","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"openSaleStartTime","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"list","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"contributor","type":"address"},{"name":"amountInWei","type":"uint256"}],"name":"eligible","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"contributor","type":"address"}],"name":"contributorCap","outputs":[{"name":"","type":"uint256"}],"payable":false,"type"

	<html>
	<body>
	<h2>Privacy Policy</h2>
	<p>[Individual or Company Name] built the [App Name] app as a [open source \| free \| freemium \| ad-supported \| commercial] app. This SERVICE is provided by [Individual or company name] [at no cost] and is intended
	for use as is.</p>
	<p>This page is used to inform website visitors regarding [my\|our] policies with the collection, use, and
	disclosure of Personal Information if anyone decided to use [my\|our] Service.</p>
	<p>If you choose to use [my\|our] Service, then you agree to the collection and use of information in
	relation with this policy. The Personal Information that [I\|we] collect are used for providing and
	improving the Service. [I\|We] will not use or share your information with anyone except as described

	// MIT License
	//
	// Copyright (c) 2020 Simon Lightfoot
	//
	// Permission is hereby granted, free of charge, to any person obtaining a copy
	// of this software and associated documentation files (the "Software"), to deal
	// in the Software without restriction, including without limitation the rights
	// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	// copies of the Software, and to permit persons to whom the Software is
	// furnished to do so, subject to the following conditions:

	/*
	SliverPersistentHeader(
	pinned: true,
	floating: true,
	delegate: OurDelegate(
	toolBarHeight: MediaQuery.of(context).padding.top,
	openHeight: 250,
	closedHeight: 40,
	),
	),

	"explorer.experimental.fileNesting.enabled": true,
	"explorer.experimental.fileNesting.expand": false,
	"explorer.experimental.fileNesting.patterns": {
	"pubspec.yaml": ".flutter-plugins, .packages, .dart_tool, .flutter-plugins-dependencies, .metadata, .packages, pubspec.lock, build.yaml, analysis_options.yaml, all_lint_rules.yaml",
	".gitignore": ".gitattributes, .gitmodules, .gitmessage, .mailmap, .git-blame*",
	"readme.": "authors, backers.md, changelog, citation, code_of_conduct.md, codeowners, contributing.md, contributors, copying, credits, governance.md, history.md, license, maintainers, readme*, security.md, sponsors.md",
	"*.dart": "$(capture).g.dart, $(capture).freezed.dart",
	},