mfikes

You need to first install GraalVM, and then set your PATH so that you get the GraalVM binaries (incluing the GraalVM version of node).

You can then install R and Ruby via

gu -c install org.graalvm.r
gu -c install org.graalvm.ruby

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

ruario

This page is no longer maintained, go to https://help.vivaldi.com/article/html5-proprietary-media-on-linux/ for help

tomwwright

# perform a fresh install of Ubuntu 17.10

# upgrade the kernel to v4.13.10
mkdir ~/kernel-v4.13.10
cd ~/kernel-v4.13.10
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-headers-4.13.10-041310_4.13.10-041310.201710270531_all.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-headers-4.13.10-041310-generic_4.13.10-041310.201710270531_amd64.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-image-4.13.10-041310-generic_4.13.10-041310.201710270531_amd64.deb
sudo dpkg -i *.deb

Integralist

#!/usr/bin/env bash

function contains {
  local e match="$1"
  shift
  for e; do [[ "$e" == "$match" ]] && return 0; done
  return 1
}

function remove_toplevel {

piedpiperRichard

function md5cycle(x, k) {
var a = x[0], b = x[1], c = x[2], d = x[3];

a = ff(a, b, c, d, k[0], 7, -680876936);
d = ff(d, a, b, c, k[1], 12, -389564586);
c = ff(c, d, a, b, k[2], 17,  606105819);
b = ff(b, c, d, a, k[3], 22, -1044525330);
a = ff(a, b, c, d, k[4], 7, -176418897);
d = ff(d, a, b, c, k[5], 12,  1200080426);
c = ff(c, d, a, b, k[6], 17, -1473231341);

NeoTheFox

# vim:fileencoding=utf-8:ft=conf

# Font family. You can also specify different fonts for the
# bold/italic/bold-italic variants. By default they are derived automatically,
# by the OSes font system. Setting them manually is useful for font families
# that have many weight variants like Book, Medium, Thick, etc. For example:
# font_family Operator Mono Book
# bold_font Operator Mono Thick
# bold_italic_font Operator Mono Medium
font_family      Hack

getify

function reverseStr(str) {
	if (str.length <= 1) return str;
	
	var firstChar = str[0];
	var restStr = str.substr(1);
	
	return (restStr.length > 1 ? reverseStr(restStr) : restStr) +
		firstChar;
}

rauschma

// Lazy (=on-demand) zip()
for (const [i, x] of zip(naturalNumbers(), naturalNumbers())) {
    console.log(i, x);
    if (i >= 2) break;
}
// Output:
// 0 0
// 1 1
// 2 2

Integralist

vim -D                  # starts vim in a step-debugger mode
:h map-listing          # show information about key bindings that have been mapped by either your .vimrc or other scripts
:scriptnames            # shows list of sourced script names, in the order they were sourced
:set runtimepath?       # shows list of directories which will be searched for runtime files
:verbose set <option>?  # shows where <option> was last set (e.g. :verbose set history?)
:set rtp+=<path>        # allows appending <path> to the runtimepath variable

# example mappings I use, and last item demonstrates a bug...

:map \\\                # mapped to a Commentary plugin command