steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

nemoDreamer

React.cloneElement vs. Render Prop pattern benchmarking

Run:

babel clone-element-vs-render-prop.jsx | node

Result:

gsamat

tap "ethereum/ethereum"
tap "heroku/brew"
tap "homebrew/boneyard"
tap "homebrew/bundle"
tap "homebrew/cask"
tap "homebrew/cask-versions"
tap "homebrew/core"
tap "paritytech/paritytech"
cask "java"
brew "ansible"

mwakaba2

Updated, easy to remember numbers for back-of-the-envelope calculations in system design interviews

Powers of two table

Power    Approx Value (Bytes)       Bytes
-----------------------------------------
10                 1 thousand        1 KB
16                65 thousand       64 KB
20                  1 million        1 MB
30 1 billion 1 GB

andy-thomason

Genomics - A programmer's guide.

Andy Thomason is a Senior Programmer at Genomics PLC. He has been witing graphics systems, games and compilers since the '70s and specialises in code performance.

https://www.genomicsplc.com

noamtamim

How to use PlantUML with Markdown

PlantUML is a really awesome way to create diagrams by writing code instead of drawing and dragging visual elements. Markdown is a really nice documentation tool.

Here's how I combine the two, to create docs with embedded diagrams.

Step 0: Setup

Get the command-line PlantUML from the download page or your relevant package manager.

zerobias

import {
  createStore,
  createEvent,
  is,
  clearNode,
  forward,
  sample,
  Store,
  Event,
  launch

IanColdwater

Mute these words in your settings here: https://twitter.com/settings/muted_keywords

ActivityTweet
generic_activity_highlights
generic_activity_momentsbreaking
RankedOrganicTweet
suggest_activity
suggest_activity_feed
suggest_activity_highlights
suggest_activity_tweet

tigt

const { execSync } = require('child_process')
const { createHash } = require('crypto')
const invertColor = require('invert-color')

const branchName = execSync('git rev-parse --abbrev-ref HEAD')
const hash = createHash('sha256')
hash.update(branchName)
const color = '#' + hash.digest().toString('hex').substring(0, 6)
const invertedColor = invertColor(color, true)

cristaloleg

#!/bin/bash

# Usage: ./script NAME MAX-PAGE-NUMBER REGEX-PATTERN
#
# Also curl, jq and git are required.
#
# Author: https://gist.github.com/cristaloleg
#
# Based on https://gist.github.com/erdincay/4f1d2e092c50e78ae1ffa39d13fa404e